bing tracking image
  1. Trailer Tires and Wheels
  2. Kenda
  3. Tire Only
  4. 13 Inch
  5. 175/80-13
  6. Load Range D
Loadstar ST175/80D13 Bias Trailer Tire - Load Range D

Loadstar ST175/80D13 Bias Trailer Tire - Load Range D

Item # AM1ST77
Our Price: $87.61
Trailer Tires and Wheels
Orders above $99 qualify for Free Shipping
Shipping Weight: 18 lbs
In Stock
AM1ST77 - 13 Inch Kenda Trailer Tires and Wheels
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos


Need help with installation?
Locate installers near me
Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 13" wheels; its maximum load is 1,610 lbs at 65 psi. Great Prices for the best trailer tires and wheels from Kenda. Loadstar ST175/80D13 Bias Trailer Tire - Load Range D part number AM1ST77 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (2655)
  • Q & A (0)
  • Photos
  • Why etrailer?

Kenda Trailer Tires and Wheels - AM1ST77

  • Tire Only
  • 13 Inch
  • 175/80-13
  • Load Range D
  • Bias Ply Tire
  • M - 81 mph
  • Kenda

Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 13" wheels; its maximum load is 1,610 lbs at 65 psi.


  • Flatter tread offers improved stability for excellent handling
  • Special trailer (ST) tire has sturdy sidewalls so that it can handle heavy loads
    • Created specifically for trailers and not intended for use on other vehicles
  • Advanced rubber compound
    • Longer tread wear
    • Low rolling resistance for smooth ride
  • Bias tire meets DOT requirements


  • Fits: 13" x 4-1/2", 13" x 5", and 13" x 5-1/2" rims
  • Tire size: ST175/80D13
    • Section width: 6.6"
    • Outer diameter: 24"
  • Capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 1,610 lbs at 65 psi
  • Maximum speed: 81 mph (speed rating M)
  • 5-Year limited warranty
  • 1-Year worry-free guarantee

1-Year Worry-Free Guarantee

This tire has a 1-year worry-free guarantee. If within the first 12 months the tire is damaged in any way, it will be replaced at no charge.

Bias Tires vs. Radial Tires

Bias vs. radial tire graphic

Bias ply tires are designed for off-road or agricultural applications. They are built with thick, durable nylon cords that are positioned at a 30- to 45-degree angle to the direction of travel. The layers alternate in a crisscross pattern, making the sidewalls stiffer so that the entire tire is able to flex easily. As a result, the tire provides a smooth ride and improved handling when trailering on uneven surfaces.

1ST77 Loadstar K550 Bias Tire - LR D

Customer Satisfaction Score:

Customer Reviews

Loadstar ST175/80D13 Bias Trailer Tire - Load Range D - AM1ST77

Average Customer Rating:  4.8 out of 5 stars   (2655 Customer Reviews)

Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 13" wheels; its maximum load is 1,610 lbs at 65 psi.


The tires were very good. I sold the trailer after a year so I can’t say much about longevity.


Ordered the spare tire rack and galvanized wheel and tire. Great price on everything, found the load range D 13” tires at reasonable price. The short tires help me get the boat in the water even when tide is out.


I am just blown away by the service and price at etrailer. I needed new tires for my boat trailer and shopped around at Wallmart, Bass Pro, Home Depot and a couple of other vendors. Your price and selection was superior to all, but the real kicker was that the tires arrived within two days of placing the order and at no shipping cost.

No question etrailer has superior service, selection and price.


I’ve now had two sets of these on my boat trailer(they were replaced once on warranty) they chunked and came apart each time. Both tires have the same chunking. These are barely a year old off a small aluminum boat trailer. etrailer was awesome in all aspects, the tires are just junk from manufacturer.


Quick delivery, was dead on the trailer until replacement arrived.


Ordered 2 boat trailer tires, Loadstar ST175/80D13 bias 8 ply load range D, early CST on the morning of 4/09/14. I selected 5-7 day standard ground shipping at no charge. I was notified within an hour by email that the tires had shipped and that shipping was upgraded to 3-5 days at no charge to me. The tires shipped at 9:39 a.m. CST and arrived 2 days later on 4/11/14 at 11:04 a.m. CST. What more could a man ask for! I already have them mounted on my trailer and I am looking forward to seeing how they perform. I ordered the tires from e trailer because I could not find any 8 ply load range D tires locally in the size my trailer/boat called for. The price was very good also. Thank you e trailer for an excellent experience and great service. I will definitely remain a customer.

The tires have performed flawlessly and I will continue to be a customer for any future trailering needs.
Jerry G - 04/13/2015


needed replacement tires for my Coleman/Fleetwood tent trailer. the old ones were 14 years old, and badly worn. local tire shops carry little, or nothing for replacements, and at a $100 each. got the exact OEM name brand replacement tires from this place for a little more than half that, with free shipping. local "discount tire" mounted and balanced them for $20. these tires were date coded from January of this year, and made in Taiwan. much preferred over Chinese stuff. these are bias ply, 6 ply (8 ply rated) nylon and polyester corded tires. they appear to be very well made. the side walls of bias ply tires are much sturdier than radials, and i believe they will be durable. they were shipped fast, in a large sturdy box. could not be happier.

working great, am very happy with purchase
Adrian - 08/07/2019


Purchased these tires in Jan for my boat trailer. They appeared to be a little deformed which I thought would make them hard to mount. I did not plan to install them right away. After talking with tech support I was reassured they would be OK. Just got around to installing them myself and they worked out just great and they were exactly what I was looking for on my boat trailer.

After a year of running these tires I could not be happier. They have taken all of the abuse I could give them and no problems. Besides all of the short trips to the lake I have made a trip across the country to Arizona with all of the heat on the highway and still no problems.
Jim D - 05/12/2016


These are excellent long lasting tires. Used on a ~3000# pop up camper they track well and do very well in wet and dry conditions. This is my second set. The first set lasted about 30,000 miles


For a tent trailer. Tires showed up looking good but not installed yet.


The 13" 8-ply LRD Load Star trailer tires perform very well. I get about 10K miles on a set before I replace them and I am on my third set. No flat tires yet!

The tires are performing very well. Of course, my snowmobile trailer sat all summer with four machines inside and the tires did not require any air this winter. We have put nearly 3000 miles on the tires and they show no wear so far. I find it remarkable that they have not lost any air at all. I am very pleased.
Eric O - 03/12/2017


I purchased these tires for a home-made trailer that I wasn't sure about. The tires shipped very quickly and the price was great. I just drove over 400 miles with my news tires, and the tines are still on the tires. So far, these tires are fantastic and look like they will last a long time!

After a year, the tires are still in great shape. They are a good ride for the box trailer
Timothy S - 07/06/2015


These tires look good and have a high load rating-they are rated for a much higher weight than many tires on the market (all of the tires locally available were 4ply with a wimpy C load range) in this size TR175-80/13. They are mounted on a model 1285 Coachman Pop-up camper & I have had poor luck with the radial tires in this size-lots of cord separations & blowout failures. I am going to try out these Bias-Ply 8 ply tires. I just made my first short trip on them (approx. 200 miles in 98 degree weather) and they pulled smooth and straight. I like how they sit up with stiffer sidewalls than the radials they replaced. Be sure to have them mounted with brass shaft high pressure valve stems as the standard all rubber stems are not rated for the 65 psi pressure these tires need for maximum load rating-and it is always a good idea to have trailer tires balanced. It remains to be seen how they hold up over time on longer trips, thus the 4 star rating.


PERFECT!!! Super fast shipping,excellent product,astoundingly good price and unusually excellent customer service!Had superb selection..found just what I wanted..cannot say enough good things about my experience w/etrailer.(tires are a joy compared to the set they replaced..recommended!)

These tires have performed flawlessly!Am glad I got bias plys as I do a lot of rough travel to rivers and lakes,etc These are Very Stable and yet Very streetable re:Hwy travel.Top notch!Minimal tread wear!
Mark H - 10/25/2014


I ordered two tires but I received one that was the wrong size due to being mislabeled. However, etrailer was quick and courteous in resolving the problem. Fantastic to work with and will definitely order from you again.

The tires are as good as advertised. Ive been from Atlanta to Orlando and back with these tires trailering my boat. Trailer handled beautifully.
Ron W - 01/30/2018


Great products and great service. I bought a pair of the Loadstar ST175/80D13 Bias Trailer Tire - Load Range D - AM1ST77 and couldn't be happier with them and the service from I also bought a bike carrier from Etrailer and am just as pleased with that.


I replaced the tires on my boat trailer with load star tires. Have went on 8 trips. 150 miles to 400 miles round trip. I tent camp so I load my boat down. Not one issue. Have great tread for next year. Great product. st175/80d13 bias trailer tire. My factory tires didn't even last for a year.


Glad I found these at e-trailer. Local tire shop didn't have any Load Range" D", and wanted half again as much for their "C" tires, but they had no problem mounting these for me and installing them on my pop-up camper.

We've dragged that trailer all over the state - 4 weekends an a week long trip last year, and we're doing 5 weekends and two trips a week long this year. The tire still look new.


These tires look great!!
Will give up
date once I travel with them to Colorado in April, over 3000 miles round trip.


Have had good luck with Kenda Loadstar ST175/80/D13 Load range C on the rear axle of my deck boat trailer. I had 2 other brand tires on the front axle and they did keep up with the Loadstar's they failed. I bought a set of four of the Loadstar Load range D this time I mounted them up by hand with no problem's. Fast delivery and well packaged.


Haven't put a lot of miles on these yet but the definetly a smoother ride than what the Pop-Up camper I bought came with. I bought new wheels at the same time as I like to know everything is straight. I noticed they didn't lose any pressure after six months in storage which is awesome. I only wish I had bought the wider tire.


Great 13” 8 ply trailer tires. Peace of mind towing my UTV from Missouri to Wyoming and back knowing the tires could handle the weight and road heat at 75 mph. Also was able to load up 2 Harleys and did a similar trip to Sturgis as well. Great tires and the price was right.


Always had good service. Great fast shipping. Awsome products


Found etrailer while looking for some load D trailer tires. All the local dealers only had load C. Placed the order on a Monday and they arrived Thursday. Like some people have said do not be alarmed by the shape of the tire when you open the box as when you get them mounted they will be normal. Great price, great service, & free shipping . What else can a person want from a store. I will definitely be a repeat customer.


I was having a diificult time locating a 13" tire with a load range d for my snowmobile trailer. I found it on etrailer, I had a few questions about the tire . I was given prompt answers , the tires were shipped that day. I received them 3 days later. Excellent product, great service. I would use etrailer again without a doubt

Show More Reviews

See what our Experts say about this Kenda Trailer Tires and Wheels

  • Replacement ST175/80-13 Trailer Tire for a 2006 Scamp 16 Travel Trailer
    Any tire, when there is a load on it, will flatten out a little. The key with trailer tires is to always make sure they are inflated to the maximum psi rating as indicated on the tire. If the tires are holding pressure under load and they are not wearing then I would not go to new tires until needed. When you do switch staying with radials will give you the best performance but you could also use bias ply tires like # AM1ST77 if you take the trailer off the beaten path frequently. I have...
    view full answer...
  • What Do The Letters Mean in the ST205/75D15 C Tire Size on My Camping Trailer
    On a trailer tire labeled ST205/75D15 C, the ST stands for Special Trailer which means it is designed for use on boat and utility trailers. The 205 is the section width of the tire in millimeters. The 75 is the aspect ratio (or section height). It means the section height of the tire is 75% of the 205 mm section width. The D is the designation for the internal construction of the tire. The D stands for diagonal or bias ply construction. That means the tire body plies inside the tire will...
    view full answer...
    Image 1 for
  • Comparing a 185/80-13 Tire to the 175/80-13 Size on Americana Trailer Tire AM1ST77
    In height or total diameter, a 185/80-13 and 175/80-13 like part # AM1ST77 only differ by about 5/8 of an inch. The 185 would have a diameter of 24.65 inches while the 175 would have a diameter of 24.02 inches. The section width, or thickness of the tires differs is slightly more noticeable. The 185 would be 7.28 inches wide while the 175 is 6.89 inches wide. Take a look a the FAQ I have linked for more information on tire sizing.
    view full answer...
  • What is the Difference Between Load Ranges for Trailer Tires
    I cannot say I have ever heard of an R load range trailer tire. Generally, though, the further the letter is in the alphabet the higher the capacity is. If we look at size 175/80-13 then load range D tire # AM1ST77 that you referenced is rated for 1,610 pounds at 65 psi. A load range B in the same size is rated for 1,100 pounds at 35 psi. And a load range C of the same size is rated for 1,360 pounds at 50 psi. I have included a couple of links on trailer tire sizes and tires in general....
    view full answer...
  • What is the Speed Rating for Loadstar ST175/80D13 Bias Trailer Tire, # AM1ST77
    The trailer tires that we carry are rated for 65 miles per hour. That does include Loadstar ST175/80D13 Bias Trailer Tire, # AM1ST77. I have included a link to a video review of this tire to the right. I have also linked our FAQ article on trailer tires for you.
    view full answer...
  • How to Determine If you Have Clearance to Go from 13 in Wheels to 14 in Wheels on a Travel Trailer
    That really depends on your suspension setup and how much travel the suspension has. Basically if you go to a 14 inch wheel there will be about 1 inch less room between the tire and the fender well and at most an increase in width of 45 millimeters. Without knowing more about your setup the best advice I can give you would be to measure what clearances you currently have with the info I just said in mind and determine if you think you have enough clearance. Going to a larger wheel will...
    view full answer...
  • Can ST Trailer Tires Be Used on a Steering Axle
    ST tires are for trailers. If you are referring to a steering axle like on a cart style of trailer yes an ST tire could be used. If you are talking about putting an ST tire on a vehicle I cannot safely recommend that. I attached an FAQ on trailer tires for you to check out as well.
    view full answer...
  • Will 215/75R14 Tire Tube Fit a ST215/75D14 Tire
    The size difference between a 215/75R14 tire and a ST215/75D14 tire is very minimal so the tube for the 215/75R14 tire would also fit the ST215/75D14 tire. Please keep in mind that all of our trailer tires (ST) are tubeless and a tube should not be used. Using a tube will double the heat buildup inside the tire which will cause the tire to fail. The heat is increased because a tubeless tire is built with a liner on the inside of the tire. When you put a tube inside the tubeless tire, on...
    view full answer...
  • Can I Replace Trailer Tires with AutomobileTires
    Trailer tires have a stronger sidewall than an automobile or truck tire in order to handle higher air pressures and higher loads. Since the tires are specifically designed for use on a trailer, I can only recommend that you replace your current tires with ST, special trailer, tires. I have included a link to our ST205/75-15 tires for you. Due to the difference in construction, we do not recommend using automobile tires on your trailer.
    view full answer...
  • Is It Acceptable to Use Bias a Ply Tire As Spare Tire on 1999 Dutchman Tandem Axle Camper
    A ST205/75D-14 is a bias ply tire. It would be acceptable to use it for an emergency spare but I would recommend getting the radial repaired or replaced without any delay if you get a flat tire. I'd limit the time, distance and speed the tire is exposed to as much as possible. The best practice is to use all four tires of the same construction, size and load rating. I've linked you to our Trailer Tire FAQ article, which has all kinds of helpful information about trailer tires.
    view full answer...
  • Can a Load Range D Tire be Used on the Same Wheel as a Load Range C Tire
    Yes, you can use load range D tires on the same wheel as a load range C tire as long as the tire sizes are the same. Even with the load range D tires, you should still not exceed the weight capacity of the axle. You mentioned that your trailer has 3,500 lb axles and your wheels are stamped with a weight capacity of 1,820 lbs. Since two wheels would exceed the weight capacity of the axle, you will want to use the axle capacity as the limiting factor as long as the new tires are rated higher...
    view full answer...
  • Will a 215/65R15 Tire Fit In Place of an ST205/75R15 Trailer Tire
    A 215/65R/15 is not a common trailer tire size. But if the size is actually ST215/65-15 then it can be used on a trailer. An ST205/75-15 tire will have an overall diameter of 27.3 inches and width of 8.1 inches. A 215/65-15 tire will have an overall diameter of 26 inches and width of 8.5 inches. As long as there is a half inch of space or more available between the tire and trailer frame then the size is compatible as long as it is a trailer tire. Trailer tires are constructed differently...
    view full answer...
  • Can ST Tires Be Used on a Horse Trailer
    Absolutely. ST tires are designed for trailer use only. The ST stands for special trailer. Provided that you get the right size and capacity for your wheels you can use an ST tire. If you could tell me the current size the trailer has and the gross trailer weight capacity I will be happy to make some recommendations for you.
    view full answer...
  • How do You Know How Much to Inflate a 10 Ply Rated Tire on a 1/2 Ton Truck
    On a passenger vehicle, you would inflate the tire according to what the sticker says in the door jamb or in the owners manual of the vehicle. The pressure is chosen by the vehicle manufacturer for the best ride quality given the weight and design of the vehicle. Often times different air pressures are used for different scenarios on any given vehicle such as when towing or carrying heavy loads. This is different from trailers that require the maximum psi indicated on the tire. This is...
    view full answer...
  • Can the Kenda Tire part # AM1ST77 fit a 4 inch Wide Rim
    I checked with Kenda and they list the Kenda Tire part # AM1ST77 that you referenced as a fit for 13x4 inch wheels so this tire should work well for you.
    view full answer...
  • What Does the R Stand for In a Trailer Tire Size
    The R in the ST20575R15 stands for radial which is the way the tire is constructed. The main difference between a radial ply and a bias ply tire is how the tire is constructed. The cords inside a bias ply tire run at a 32 degree angle to the direction of travel, and the cords on a radial tire run at a 90 degree angle to the direction of travel, or across the tire from wheel lip to wheel lip. A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability,...
    view full answer...
  • Do Trailer Tires Have Speed Ratings
    Yes, trailer tires are typically rated at 65 miles per hour unless they say otherwise. Exceeding the speed rating of the tire will cause it to heat up and possibly fail. I attached a help article on trailer tires for you to check out as well.
    view full answer...
  • What Does the C Mean on a Tire When at the End of the Size 235/65r16C
    The 235/65r16C is the size and the C on the end signifies they are Euro-Commercial tires which means the tires are appropriate for that vehicle based on the Euro standards. These are passenger tires and not trailer tires, so if you have those tires on a trailer, I definitely recommend replacing them with ST (special trailer) tires that are made differently for trailer use. If that is the case, I have linked the page to all our 16 inch tire options to assist. That C is not the same as...
    view full answer...
  • Trailer Tire PSI for Best Traction and Function
    Trailer Tires that have the ST in front of the numbers are special trailer tires designed to be run at their max psi when inflated cold (prior to trip). They will warm up and that psi will actually increase as the friction and ambient temps increase. It may seem like a lot, but under inflation will actually cause premature wear and possible failure as the sidewall of these tires are designed to be firm and under inflating them will make them fail. Under inflating compromises the load...
    view full answer...
  • The Correct Trailer Tire Air Pressure for Brand Name Trailer Tires
    I understand your logic and reasoning. Vehicle tires are very different than trailer tires and most manufacturers state to inflate them to the max psi when cold (prior to use) knowing full well the friction from the road and ambient temps will increase that psi and they plan for that. Vehicle tires are completely opposite in that aspect and are designed very differently as they have a much softer sidewall to allow for turning that trailer tires are not designed for. Trailer tires have...
    view full answer...
  • How Much Pressure Should I Inflate My New Load Range E Trailer Tires To
    It is always recommended to inflate most trailer tires to max PSI because it extends their life, cuts down on wear and allows them to be used at the maximum weight capacity. If the new tire has a max PSI of 80 then it is best to inflate the tire to 80 PSI. An exception to that rule is if the tire is a Goodyear Endurance Tire. The Goodyear Endurance is designed so the maximum weight capacity of the tire decreases with a lower PSI in the tire but the quality of the tire will not be affected....
    view full answer...
  • Should Trailer Tire Really be Inflated to Max PSI Rating
    On any trailer tire you always want to inflate the tire to the maximum cold psi, which on your tire is 50. This ensures you get the full weight capacity and prevent heat build up which can cause failure.
    view full answer...
  • Is a 10 PSI Increase in Trailer Tire Pressure Normal from Heat Created by Driving
    As long as you aren't exceeding the speed rating of the tires which would cause them to get to an excessive heat you are fine. Trailer tires are designed to be inflated to their max PSI rating when cold and then the pressure increase from heat from the road is normal and safe. You just need to verify you aren't exceeding the speed and weight rating and you are safe and would want to increase that alarm's threshold.
    view full answer...
  • Picking Out Bearings for 2000 Prowler Trailer with 5 Bolt Pattern
    I really wish there was a way to determine what bearings a trailer needed based on the wheel bolt pattern and without actually pulling the wheel off and checking, but there isn't. The only two solution I have for you would be to remove a hub and get the numbers that are stamped on the bearing or for you to remove the hubs and use a digital or dial caliper to measure where the bearings and seal ride (see pic). With that info I can help you figure out what you need. I attached a link down...
    view full answer...
    Image 1 for

< Previous
123. . .8

Do you have a question about this Trailer Tires and Wheel?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer tires and wheel information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Sarah L
Expert Research:
Sarah L
Employee Patrick B
Expert Research:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Reno H
Expert Research:
Reno H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Rachael H
Expert Research:
Rachael H
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Mary E
Updated by:
Mary E
Employee Wilson B
Updated by:
Wilson B
Employee Matthew E
Updated by:
Matthew E
Employee Isabelle B
Updated by:
Isabelle B
Employee Cole B
Installed by:
Cole B

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.