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Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D

Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D

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Shipping Weight: 32 lbs
Kenda Trailer Tires and Wheels - AM3S334
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Product Expert Mary E

Is this right for you? Product Expert Mary E says:

Yes, if you:

  • Have a boat trailer and need a rust-resistant finish
  • Tow off-road most of the time or for shorter distances

No, if you:

  • Travel long distances on the highway
Bias tire has a ply rating of 8 and a 1,710-lb maximum load at 65 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish. Lowest Prices for the best trailer tires and wheels from Kenda. Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D part number AM3S334 can be ordered online at or call 800-298-1624 for expert service.
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  • Reviews (3720)
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Kenda Trailer Tires and Wheels

  • Tire with Wheel
  • 13 Inch
  • 5 on 4-1/2 Inch
  • 185/80-13
  • Load Range D
  • Steel Wheels - Galvanized
  • Boat Trailer Wheels
  • Bias Ply Tire
  • Kenda

Bias tire has a ply rating of 8 and a 1,710-lb maximum load at 65 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish.


  • Loadstar special trailer tire outshines other bias tires
    • Flatter tread offers improved stability for excellent handling
    • Special trailer tire design
      • Couples the strength of a bias tire with the durability and stability of a radial tire
      • Created specifically for trailers and not intended for use on other vehicles
    • Advanced rubber compound
      • Longer tread wear
      • Low rolling resistance for smooth ride
  • Steel wheel has 8-spoke design
    • Galvanized to resist rust
  • Tire-and-wheel assembly meets Department of Transportation specifications


  • Rim dimensions: 13" diameter x 4-1/2" wide
  • Bolt pattern: 5 on 4-1/2"
  • Wheel capacity: 1,660 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 3.19"
  • Tire size: ST185/80D13
    • Section width: 7.2"
    • Outer diameter: 24.4"
  • Tire capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 1,710 lbs at 65 psi
  • Maximum speed: 81 mph (speed rating M)
  • Warranty:
    • 5-Year on tire
    • Limited 2-year on wheel

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.

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Side

Measuring the distance from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

3S334 8-Spoke 13" Galvanized Wheel and Loadstar K550 Bias Tire - LR D

Item # AM3S334

Customer Reviews

Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D - AM3S334

Average Customer Rating:  4.9 out of 5 stars   (3720 Customer Reviews)

Bias tire has a ply rating of 8 and a 1,710-lb maximum load at 65 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish.

- AM3S334

Tires and rims arrived a couple days earlier than expected. I am very happy with the products and pleased with the appearance of the galvanized rims. I also made a separate order on plastic fenders of which I'm very happy with. Both orders were packaged well and had no damage upon arrival.

Very satisfied
Jason - 06/28/2021

- AM3S334

I bought two of these wheel/tires, several months apart. Both purchases were exactly what I expected and I'm very pleased, to say the least. My second purchase wasn't expected to arrive for another two months but Etrailer came through and I just received my purchase in mid-January. These Wheels/tires are going on a restoration I've done to one of my boats. It's going to look very sharp. Thank you Etrailer.

Its been a year since my purchase of the Loadstar wheels and tires. They are working great with no issues. Ive put several thousand miles on these. I recommend always checking the tire pressure and keeping it up at the maximum pressure indicated on the tires. Also, check your torque on the wheels about every thousand miles. Thats the safest way for you and your trailer to stay out of trouble. I hope this helps.
Thomas - 01/21/2022

- AM3S334

Ordered the tires on a Sunday night and even with regular shipping they were at my house Tuesday. I bought them to replace a pair of trailer tires purchased locally- nearly identical price, but both the tires and the wheels are of MUCH higher quality materials. I was emailed the next day to make sure the order had arrived and that I was satisfied with everything. Customer service has been great- will definitely use etrailer again!

- AM3S334

Exactly what I wanted. 2 new tires and rims for my 2014 Yamaha SX190 boat trailer. Had the tires balanced at the local tire shop we use for our cars real cheap ??. One was "typical" out of balance the other was more so. I won't complain. They are now balanced. I'm using the old ones as spares since this trailer doesn't have spares. Good to know my F150 jack and wrench work perfectly on the trailer so no extras needed. I will definitely use etrailer again if the need arises. They are great.

- AM3S334

Tires and rims were exactly what I ordered, rims look nice, chrome finish. Tires are good quality. Will work great on pontoon boat trailer. Arrived earlier than described. Took 3 days from order to arrive at my home. Thank you

- AM3S334

Overall I was satisfied with my purchase and shipping was quick. Tire and wheel seems to be good quality and packaged well. It would be great if etrailer was veteran/active Duty friendly but no discount for the 1% who served our country. These will look great on my boat trailer and ordering was a snap with a user friendly website!

- AM3S334

Etrailer is the best! They delivered my tires and rims a day early. I was able to get them on earlier than expected. The tires had a smooth ride, no issues as I traveled 640 miles total, the price was good also. I will defiantly be ordering from Etrailer again.

- AM3S334

Competent, fair, honest, and personal. Outstanding. They also offered me a better wheel at the same price as the one I ordered because they could ship it to me a week earlier than the one I ordered, and their communication via email was excellent.

- AM3S334

Perfect! Fast shipping by great seller. Finally, the tire is made in Taiwan, NOT made in China.

- AM3S334

Would have preferred a radial tire but these were the best option in the size I needed. Did not have them balanced but seem to be OK as they came. Haven't put a lot of miles on them yet. On a trailer for a Sea Ray 175 Sport boat. Old tire had a blow out, probably due to age (2007) so replaced both tires. Quick delivery.

- AM3S334

It's been a year since these tires and rims have been installed. They've held up great with just under 7k miles. Thank you etrailer!

- AM3S334

Tires with rims arrived today and look great. PSI was even correct right out of the box. Won’t be using the boat/trailer until this weekend but I have a lot more confidence now that I won’t have a blowout.

- AM3S334

fair price fast shipping installed easy happy with the purchase.

- AM3S334

Quick shipping and Tammie was very knowledgeable and pleasant to talk with.

- AM3S334

Could not be more pleased. Needed a basic spare tire set up for a jet ski trailer and received the items in less than a week. GREAT on- line experience and will now be shopping here for all future trailer needs.

- AM3S334

Great price, quality tire and rim with fast shipping from etrailer. After internet search at many sites, etrailer offered the best price and tire I needed as a spare for my boat trailer. Also received a very nice sturdy Fulton tire mount. Received order extremely fast within 2 days. Very pleased and would definitely order again.

- AM3S334

I am very impressed with this wheel, for a galvanized wheel, it almost looks chrome, very shiny. The service was very quick on shipping. If I ever need anything else, I will purchase again.

- AM3S334

I gave the wheels 2 stars since the galvanised finish is much less than any other that I have seen. The finish is so thin I could compare it to the thickness of aluminium foil. Possibly even less. I should have just ordered a new set of tires and had them mounted on my old rims.

- AM3S334

Needed a spare tire for jet ski trailer. This set up was perfect for the job. the galvanized rim was a much better deal than other companies selling painted grey rims. Very happy with this purchase!

- AM3S334

each orser arrives fast and CORRECT. Th anks

- AM3S334

Tires were great, but not much for the rims. Very dissatisfied with the rim quality, it was all scratched and seems that it was spray painted. I know galvanized rims should not look nice and shiny but should no look like its a 5 years old. I wish I took pictures to post but I already installed and used several times because trailer had no tires, and its too late to ask for refund. I have been shopping Etrailer for several years and this is my first disappointment in your product.

- AM3S334

Lowest price anywhere, very fast shipping, ordered it for a spare, exactly what I was lookig for,, thanks!!!!

- AM3S334

Wheels and tires look great! Just what I ordered. Thanks etrailer!

- AM3S334

Absolutley perfect , super fast shipping at a great price.

- AM3S334

I have not opened and installed the product yet but the order system was great and delivery far exceeded my expectations on being early. I will use them again.

Show More Reviews

Ask the Experts about this Kenda Trailer Tires and Wheels

  • Replacement 13 Inch Wheel That Will Handle Tires That Require 65psi
    If you've got a 5 on 4-1/2" bolt pattern, the Dexstar Trailer Wheel # AM20245 , which have a 1730-lbs capacity and will be able to handle the 65-psi required for these tires. If you've got a different bolt pattern, just let me know what you've got and I can find you a wheel that will work for you trailer and new tires.
    view full answer...
  • Replacing 5.70-8 Bias Trailer Tires With Radial Trailer Tires
    Your current bias 5.70-8 tires like the Kenda K353 # AM10010 measure 18.1" in diameter and are 5.8" wide. The closest size to that for radial tires are 4.80R12 trailer tires, which are 20.6" in diameter and 4.8" wide. This means you will also need new wheels, but the overall size is important because with trailer tires, the general rule of thumb is you want at least 3" of clearance from the top of the tire to your fender and at least 1" of clearance between the inside of the tire and your...
    view full answer...
    Image 1 for
  • Difference Between Galvanized and Aluminum Wheel
    We have Loadstar 185/80-13 bias tires and wheels, and they are essentially the same weight; the difference is that the galvanized wheel # AM3S334 is steel with an 8-spoke design and is made to resist corrosion. Galvanized wheels are often the type of wheel that people with a boat trailer might use. The Loadstar with an aluminum wheel # AM3S339 has a star spoke pattern and is clear coated on both sides. Each has a load range D with a wheel capacity of 1,660 lbs and speed rating of 81 mph....
    view full answer...
    Image 1 for
  • Larger Wheel and Tire for Trailer 185/80R13
    To get any bigger and wider you will have to move to a larger wheel and tire package. I have listed a couple 15" options below next to your 13" that you are asking about. These are all mounted on wheels already for added convenience. Be sure to inspect for how much clearance you have with larger tires as well and if you have any concerns about the larger sizes let me know what clearances you currently have. You will want at minimum 1" of clearance with the new tires throughout the suspension...
    view full answer...
  • Can Trailer Tire Size ST185/80D13 Replace Tire Size ST175/80R13
    Yes, the two tire sizes you mentioned of ST175/80R13 and ST185/80D13 both fit the exact same wheel size so yes, the part # AM10208 would work well as a replacement for your ST175/80R13.
    view full answer...
  • Can Larger Tires with Brakes Be Installed On a Harbor Freight Folding Trailer
    I do have an option for you to upgrade to larger wheels/tires in the Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel part # AM3S130 which is similar to the Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel part # AM3S334 you were asking for. However, the Harbor Freight Trailers use very uncommon bearings and we don't have any hubs that will work with them so I can't get you setup with brakes and the larger bolt pattern. There could also be an issue with the...
    view full answer...
    Image 1 for
  • Recommended Special Trailer Tire Size ST185/80D13 W/Over 65 mph Rating
    I recommend the Kenda Loadstar ST185/80D13 Bias Trailer Tire Item # AM1ST79. It is a top-quality bias special trailer tire with a maximum load capacity of 1,710 lbs at 65 psi. Maximum speed capacity is 81 mph. We have 4 tire and wheel combinations that are ST185/80D13 with 5 on 4-1/2 bolt pattern with a maximum speed capacity of 81 mph. They are: Kenda Loadstar ST185/80D13 Bias Trailer Tire Item # AM3S334. Same bias tire with a galvanized wheel. Kenda Loadstar ST185/80D13 Bias Trailer...
    view full answer...
  • Which Metal Valve Stem Compatible With TPMS Sensors for 13 Inch Trailer Wheel
    A 13 inch rim such as the # AM3S334 wheel you purchased would have a valve stem hole that's .453 inches in diameter, which is compatible with one of the grommets included with the the # AM20906 metal valve stem you'd looked at. These valve stems would be a better choice for use with a TPMS system.
    view full answer...
  • Why is Trailer Tire Wearing on the Inside Only?
    A wider tire will not solve the issue of your tires wearing down on the inside only. If your trailer tire is wearing on the inside but is not overloaded and your suspension is aligned properly the only other issue that can be causing this is the tires not being inflated to their max psi consistently. On trailer tires you always want to inflate the tire to the maximum cold psi, which will give you the best performance, allowing the tire to wear more slowly and give you optimum gas mileage....
    view full answer...
  • Can a 13 inch Trailer Wheel be Replaced with a 14 inch Wheel
    Your picture didn't make it through but it sounds like you would like to upgrade your tire and wheels on your trailer. You may substitute a 14 inch tire and wheel as long as you have both the wheel well height and width clearance for it, the capacity of your trailer, and has the same bolt pattern. A 14 inch tire and wheel combination with the 5 on 4-1/2 inch bolt pattern is the Kenda Load Range D # AM32161. This tire and wheels outer diameter is going to be 26.3 inches compared to your...
    view full answer...
  • Tire and Wheel Options for a ST185/80-D13 Trailer Tire
    In general, radial ply tires are better for long highway trips whereas bias ply tires are better for short trips that may lead you offroad. However, we only offer bias ply trailer tires in a ST185/80-D13. We currently have 4 wheel/tire combos in your size all of which have a wheel with a 5 on 4-1/2" lug pattern. I have attached these options for you below but you will want to use the attached help article to ensure you have chosen the correct lug pattern. Loadstar Tire/Galvanized Wheel:...
    view full answer...
  • ST185/80D13 Rim and Tire Combo with 5 Lug Bolt Pattern Recommendation
    The part number # AM3S334 is the wheel/tire/bolt pattern size you need that is on a galvanized wheel that is silver in color. Or for an aluminum wheel version you would want the part # AM3S339 which is also silver.
    view full answer...
  • How to Select Properly Rated Trailer Tires
    Tires only need to have a capacity that, when combined, equal or surpass the GVWR of your trailer, including your 1994 StarCraft Stardust trailer. For example, if you had 13 inch wheels and your trailer had a GVWR of 2,500 lbs you could use the Contender ST175/80R13 Radial Trailer Tire # C17513C which have a 1,360 lb capacity when inflated to their max 50 psi. Two of these tires inflated to max psi would give you a 2,720 lb capacity, exceeding the GVWR of the trailer. So as long as your...
    view full answer...
  • Trailer Tire Recommendation for Size 175/80R13 for Higher Speeds
    For a higher speed rated trailer tire in the size you need of ST175/80R13 the best option is the Kenda tire part # AM10208 as this tire is rated for up to 81 mph. The weight capacity of the tire is 1,710 lbs at 65 psi. I attached a review video for this tire for you to check out for more info as well.
    view full answer...
  • Spare Tire Carrier Recommendation for a Featherlite Trailer
    It sounds like you installed a tongue jack on one side of your Featherlite trailer frame. On the other side of the trailer frame you could install a Fulton Hi Mount Spare Tire Carrier part # FSTC1000301 to mount your spare if you can determine that its compatible. This carrier works on 4 on 4, and 5 on 4-1/2 inch bolt pattern wheels that are 10 inch or larger in diameter. This will also fit frames that are up to 3 inches in width and 4 inches in height. I attached a review and an install...
    view full answer...
  • Are Wheel/Tire Assemblies Pre-Balanced
    Most wheel wheel/tire assemblies come pre-balanced to an extent that is suitable for use on non-steer axles. This is done by matching the light spot on the tire (yellow dot) with the heavy spot on the wheel (valve stem). However, if you would like for the assmelby to be balanced down to the 1/4 oz then you would need to take it to a wheel/tire shop but this is not really needed for trailers.
    view full answer...
  • Is There a Price Match for Wheel and Tire Combo?
    We offer a lowest price pledge for our products, including the Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel # AM3S334. I have added a link to our page which explains how it works in detail for you to check out.
    view full answer...
  • How to Choose Boat Trailer Tires
    There is a way for you to select the right tire, though I was unable to find any type of specs for a Bayliner trailer. However, it is easy to find the correct tires for your application, you simply want to choose tires that have a combined capacity which exceeds the GVWR of your trailer and fit your wheels. For example, the Karrier ST175/80R13 Radial Trailer Tire # AM10199 is a load range C tire with a capacity of 1,360 lbs (or 2,720 lbs for two) that fits 13" x 4-1/2", 13" x 5", and...
    view full answer...
  • Replacement Tires For 185/80R13 Tires With 5 On 4-1/2 Bolt Pattern
    Based on the information you sent, I recommend the Loadstar ST185/80D13 Bias Trailer Tire with 13 inch Galvanized Wheel, Item # AM3S334. The Loadstar is constructed to provide the strength of a bias tire with the stability of a radial tire. This unique design is very safe and durable and exceeds DOT standards. This tire and wheel combination fits 5 on 4-1/2 bolt patterns. It has a maximum load of 1,660-lbs at 65 psi with a maximum speed of 81 mph. If you just need just tires, I recommend...
    view full answer...
  • Bolt Pattern and Recommended Wheel and Tire for Salt Water Boat Trailer with ST175/80r13 Tires
    It would be odd for the 4-1/4 inch measurement to be accurate. I've attached an article on measuring bolt pattern for you to confirm your bolt pattern before ordering. You also may choose to use the Redline Bolt Pattern Template # BC-TEMP to confirm. If you do end up with the same measurements, you may want to consider changing out your hubs as that isn't a standard size. Based on your wheel size, I believe you will have a 5 on 4-1/2 inch bolt pattern and recommend the Provider ST175/80R13...
    view full answer...
  • Can Bias Ply Spare Be Used on Trailer with Radial Tires
    Yes, as long as the spare tire is the same size, load range (weight rating) and has the matching wheel bolt pattern you can use a bias ply spare to replace a radial main tire for the short distance you'll travel to get the radial repaired or replaced. For example, the 5-on-4-1/2 bias ply # AM31233 can be used as a spare to replace radial # AM31994. You do not want to run the trailer with mixed tires for any substantial distance but to get you to a repair shop it is fine.
    view full answer...
  • Replacement Wheels and Tires for 1999 Coleman Niagra
    According to my online research, your 1999 Coleman Niagra came from the factory with ST/185D13 tires on it, and what I believe was a 5 lug wheel with a 4-1/2 inch bolt circle. I would recommend measuring your existing bolt pattern to confirm that your existing wheels or hubs (if the wheels are missing) to confirm the bolt pattern. I have linked you to an FAQ article that will show you how to determine your bolt pattern. If you positively confirm the bolt pattern, the # AM3S334 wheel/tire...
    view full answer...
  • Comparing Radial Trailer Tires and Bias Ply Trailer Tires
    We actually have an FAQ article on trailer tires, part of which covers bias ply tires versus radial tires. I have posted the section below and I have also included a link to the whole FAQ article for you. The main difference between a radial ply and bias ply tire is how the tire is constructed. The cords underneath the tire are run in different directions. On a bias tire, the cords run at a 32 degree angle from the direction of travel and on a radial tire, the cords will run at 90 degrees...
    view full answer...
  • Changing The Original Tire On My Boat Trailer
    If you wanted to go with something similar you could get something like this ST185/80D13 Bias Trailer Tire # AM3S334 as long as your bolt pattern is 5 on 4-1/2. We do not carry the exact tire that originally came with your trailer. If you're swapping both of them out I do not see an issue with swapping for a radial tire like # TR20514. If you have fenders you may see some rubbing with a larger tire on there but that may not be an issue. The stamp you see on your trailer is what the trailer...
    view full answer...

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