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Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C

Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C

Our Price: $129.24
Trailer Tires and Wheels
This item qualifies for Free Shipping
Shipping Weight: 29 lbs
AM3S130 - Steel Wheels - Galvanized,Boat Trailer Wheels Kenda Tire with Wheel
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Bias tire has a ply rating of 6 and a 1,360-lb maximum load at 50 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 4 on 4 bolt pattern and a corrosion-resistant galvanized finish. Great Prices for the best trailer tires and wheels from Kenda. Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C part number AM3S130 can be ordered online at or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels

  • Tire with Wheel
  • 13 Inch
  • 4 on 4 Inch
  • 175/80-13
  • Load Range C
  • Steel Wheels - Galvanized
  • Boat Trailer Wheels
  • Bias Ply Tire
  • M - 81 mph
  • Kenda

Bias tire has a ply rating of 6 and a 1,360-lb maximum load at 50 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 4 on 4 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: 4 on 4"
  • Wheel capacity: 1,660 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 2.65"
  • Tire size: ST175/80D13
    • Section width: 6.6"
    • Outer diameter: 24"
  • Tire capacity:
    • Load range: C
    • Ply rating: 6
    • Maximum load: 1,360 lbs at 50 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"

3S130 8-Spoke 12" Galvanized Wheel and Loadstar K550 Bias Tire - LR C

Item # AM3S130

Customer Satisfaction Score:

Customer Reviews

Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C - AM3S130

Average Customer Rating:  4.8 out of 5 stars   (4860 Customer Reviews)

Bias tire has a ply rating of 6 and a 1,360-lb maximum load at 50 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 4 on 4 bolt pattern and a corrosion-resistant galvanized finish.


Thanks for your follow-up. Attached is a photo of the new wheels/tires mounted on my trailer. The 35+ year old girl hasn't looked that good in a long time. Can't wait to tow something and not have to pump air in the leaking rims before hitting the road. Thanks for the excellent product line and fast service.

The Kenda tires are not working out as expected. One has developed a slow leak, with no obvious damage to the tire, such as nail or puncture. I havent had a chance to water tank test it to see if the problem is the valve, bead, wheel, or tire.Have you had any other similar problems reported with Kenda tires that would indicate where to focus?
Rick R - 06/24/2015


great tires for home made trailer and f enders...

Not good.oil buddy bearing kits [4]. Leak keep having to add oil every trip.
John - 10/16/2022


I ordered tire and wheels for my trailer. The wheels existing on the trailer were 4 bolt patter from a 1965 Ford Falcon. The tires and wheels were fine except the bolt pattern did not line up. I can not use these and was told by someone at Your company to measure the bolt pattern which I can do. I certainly don’t need 4 tires, the tires are fine. It’s the wheels that don’t fit. I should not have to send measurements if your company had sent wheel for the specific car I mentioned. I know these to be correct because I took them off that car that had been in the family since new.

I did measure as well as I could centerline to center line and measured 3 and 1/4 inches. I don’t think that’s the best way to order wheels because there are so many iteration close but just off a bit. But I’d like to have wheels that fit. Right now I have a nice set of wheels and tires from you which I can’t use.

I have attached a help article with the easiest way to measure bolt pattern. I do want to point out that etrailer only sells trailer tires and wheels. These are not recommended for vehicles of any kind.
-- Etrailer Expert Sierra K - 09/30/2021


No problems with the order or the tires and rims. New deck, new paint, new lights and last but not least new rims and tires.


Great wheel and tire for a an equally great price. Tremendous value as well.


Tires and rims are well built and affordable. They arrived fast and were exactly what I ordered.


Glad I found you guys got exactly what I needed,was a little nervous about ordering on line but you tutorial on how to measure bolt distance made the difference


Quick shipping and the tire and rim are as ordered.

All good.
Craig H - 07/31/2022


Fast free delivery. Fair prices. That’s why I keep coming back to this store.


I live in a fairly rural community in IL. I have a little 4'×8' trailer I could not find tires for anywhere. Even my tire hoarding contacts didn't have any. The obsolete tire was a 155 R13 78S. I went to 4 local stores and only 1 had a 13 inch tire and only 1 in stock. Because there would have been a size difference I was going to need 2 tires. The price without tax was 79.00 for each tire. They had one 13 inch tire on a rim in stock, however it was a 5 bolt and I needed a 4 bolt. My store couldn't even order them. So I turned to the internet and found etrailer. I found these AM3S130 tires on rims with a 4 bolt pattern. I was hoping they'd fit under my fenders, but they were my only option I found in my hunt. I figured if they were too tall I'd just have the fenders removed and welded back on at a higher height. I was ecstatic to see free shipping for my order over $100. Shipping was fast and the tires were perfect fit! I'm ready to mow yards and hit the auctions again. Well, if the State of IL ever opens up again. Thank you etrailer!


Prompt delivery. Excellent tire and rim. Making a BBQ trailer and it looks good.


Product as described, hard to find 4 on 4 pattern. EVen though listed as out of stock, product arrived well ahead of schedule. Etrailer customer service kept me notified throughout, no surprises except for early delivery. Good job.


I purchased these tires for my boat trailer. I trailer my boat approx. 1200 miles to Canada to go fishing. The shipping was quick, communications were good and the product was as described. They were easy to order using the instructions and diagrams provided on their website for the bolt pattern. They fit perfectly and I will order from etrailer again.


I am very happy with the tires and rims It really upgraded my raft trailer


I've order from [online resale] and [online vendor] exstensivly, but etrailer continues to beat them both! Great products and ultra fast delivery on my orders. A winning combanation and if you have an issue, you are dealing direct with "the company" that cares.


Does just fine as a trailer tire


Product is exactly what I needed and ordered. They are honest and true about there products and shipping . I will most definitely refer them to a friend .


Easy purchase and delivery to me. Only problem was one of the wheels is warped giving the tire a noticeable wobble. I didn't want to go through shipping it back so I live with it.


Everything was great from start to finish. The only exception was the rim is bent on the tire I received. It appears this was done in mounting. It is going on my fishing boat trailer so no big deal to me. Might be for someone else. Will need to order another one soon and will definitely purchase from etrailer.


Great tires!! durable and fit great!


exactly what I was looking for. No local tire shop could find this wheel and tire. Thanks


Wheels and tires look great. Too soon to tell whether the boat when fully loaded will bring the top of the tire too close to the bottom of the fender, but there appears to be plenty of room to accommodate that as Conner L had predicted. The increased load rating on the tires should now be sufficient to carry the fully loaded boat and trailer. New issue (that I should have foreseen) is that with the increased height at the axle, the trailer is no longer level and I had to order a ball mount with a taller rise. If I had thought ahead and ordered it with the wheels, I could have saved the shipping costs. No big deal. The price for the ball mount was still competitive even with the shipping charge.


Excellent customer service,they had what I needed for my home made motorcycle trailer,order came within 3 days and I believe the quality is excellent

David - 10/08/2020


tires and rims fit very good.


Tires and wheels look and fit like a glove. That is after I lifted the trailer 3.5 inches.I knew I had to before ordering. Went from 8 inch wheels to 13 inch. Very happy with product.

Show More Reviews

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

  • Factors to Consider When Increasing Wheels on a Trailer from 8 Inches to 13 Inches
    The factors that you will want to consider when increasing your tire size are wheel bolt pattern, tire width, tire clearance and overall trailer height. You will want to keep the same bolt pattern as your current tires. The Kenda Loadstar ST175/80D13 Tire, # AM3S130, that you referenced has the same 4 on 4 bolt pattern as your current tires so that will work. The next thing to check is your tire width, or section width. Increasing the wheel size may increase the section width of the...
    view full answer...
  • Largest Trailer Rim Availability with 4 on 4 inch Bolt Pattern
    The largest diameter rim we offer that has the 4 on 4 inch bolt pattern is 13 inches. The part # AM3S130 is an example. It has a 175/80D13 size tire installed and measures 24 inches in overall diameter. I also attached a link to a page that has all of the 4 on 4 inch bolt pattern rims and tires we offer.
    view full answer...
  • Should Wheel Spacers be Used for Tires Rubbing Trailer Frame
    I am unaware of any specific place that has a spacer/extender which will work for your application in regards to the Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel # AM3S130 rubbing your trailer frame. We do not recommend the use of spacers because it can cause otherwise avoidable issues with your tires and hubs; the added stress from an extension/spacer can cause tire wear or internal issues with the hub. While I understand it is not the solution you wanted the best...
    view full answer...
  • Switching from 5.30-12 to 175/80-13 Trailer Tires
    Yes, you can safely fit a 175/80-13 tire on your boat trailer. I recommend the Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel part # AM3S130 for replacement as the galvanized wheel will do well to resist corrosion and the total load capacity of 2,720 lbs should be plenty for your needs. This option also provides an 81 speed rating. The 5.30-12 tire is 22" diameter x 5.6" wide and the 175/80-13 tire is 24" diameter x 6.6 wide. Therefore, you will only lose 1" diameter...
    view full answer...
  • Is a Trailer Tire's Load Rating Per Tire or Per Axle
    Weight capacity ratings on tires are for that 1 tire. So if you used 2 of # AM3S130 for example the total capacity would be 2,720 pounds total.
    view full answer...
  • Can Trailer Tire Size 155R12 Be Upgraded to ST175/80D13
    If you go up to the taller tire size of ST175/80-13 like with the # AM3S130 you'll lose about 1.5 inches of fender clearance which may not be an issue but you'll want to make sure you have at least 3 inches when it's all said and done. It looks like you'd be fine but you'd want to verify this to be sure.
    view full answer...
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  • Recommended Boat Wheel and Tire with 4 on 4 Bolt Pattern
    The Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C # AM3S130 you were looking at are a great choice for a boat trailer because of the galvanized wheel and durable bias ply tire. These Load Range C tires have a capacity of 1,360-lbs, so you'll want to make sure that your boat and trailer don't weigh more than 2700-lbs. If you have a heavier trailer than that, just let me know what the estimated weight is and I can make an alternate recommendation.
    view full answer...
  • Tire / Wheel Recommendation For Pop-Up Camper With 4 On 4 Bolt Pattern
    We do offer a few options for tire/wheel combos that may work for your camper. We have the Loadstar ST175/80D13 Bias Trailer Tire, part # AM3S120 that has a white 8-spoke steel wheel. This tire has a 6 ply rating and a 1,360 maximum load at 50 psi. For a tire wheel with the same characteristics except the wheel has a galvanized finish, you would order part # AM3S130. I have attached product review videos for both of these combos you can check out.
    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...
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  • 13 Inch Boat Trailer Wheel and Tires With 4-Bolt Pattern
    Sure, you can go from 12 inch to 13 inch wheels and tires on your boat trailer that has 4-bolt hubs. You just want to be sure to maintain 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 trailer's frame rail. If you have that you can choose from the following wheels and tires for your boat trailer, depending on the load capacity you need, and they measure 24" in diameter and 6.6" wide. - Load Range B (1,100 lbs...
    view full answer...
  • Availability of Trailer Wheel and Tire with Size ST175/80D13
    For a galvanized wheel with a ST175/80D13 mounted on it we have the part # AM3S130 for a 5 lug wheel or part # AM3S040 for a 4 lug wheel.
    view full answer...
  • Which Trailer Tires Will Replace 650-13 Tires On an Old Boat Trailer
    The 650 indicates the section width of the tire is at or near 6-1/2 inches. The closest modern equivalent is an ST175/80-13 which is about 7 inches wide. This tire size fits 4-1/2 to 5-1/2 inch wheels. Wheel width is measured on the inside where the tire sits not the overall width of the wheel. If you just want tires you can use # AM10210 rated for 1,610 pounds at 65 psi. If you want to also replace the wheels I recommend tire and wheel combo # AM3S130 which comes with a galvanized wheel...
    view full answer...
  • What is the Finish on Kenda Loadstar ST175/80D13 Tire with 13-Inch Galvanized Wheel # AM3S130
    The tire/wheel you referenced, Kenda Loadstar ST175/80D13 Tire with 13-Inch Galvanized Wheel, part # AM3S130, has a galvanized finish. This wheel is dipped in a 860-degree solution of molten zinc to provide a degree of corrosion resistance. This zinc coating reacts with oxygen and carbon dioxide to form zinc carbonate. This is the usually dull grey surface material you have seen on galvanized buckets. Dexstar does offer a silver-color powder coat finish on some of their rims, such as on...
    view full answer...
  • Trailer Tire and Wheel Recommendation for Boat Trailer Needing B78-13 Mounted on 4 Lug Wheels
    The modern tire size equivalent to B78-13 is the size 175/80-13 which we do carry mounted on a rim with a 4 on 4 inch bolt pattern. For that we have the Loadstar ST175/80R13 mounted on galvanized wheel part # AM3S130 which would be a great option. The tire has a capacity of 1,360-lb maximum load at 50 psi and an 81 mph speed rating.
    view full answer...
  • Can 4.80-12" Trailer Tires Be Used On a Boat Trailer With ST175/80D13 Tires
    You will need to ensure that you will not have any ground clearance issues with your ShoreLand'r trailer before moving to the smaller tires. Your current Loadstar ST175/80D13 Bias Trailer Tire # AM3S130 is going to be 24" tall and 6.6" wide. The Kenda 4.80-12 Bias Trailer Tire # AM30630 that you would be switching to is 20.7" tall and and 4.9" wide. Your trailer will drop 1.65" from the smaller tires. You will also need to ensure you have enough weight capacity with the Kenda 4.80-12...
    view full answer...
  • Tire Replacement Recommendation for 155R13 C90/88Q on Boat Trailer
    Thanks for reaching out! Your 155R13 C90/88Q tire size means the overall diameter is 22.8", the width is 6.1", and it fits on a 13" wheel. While we have some options that are similar, none are exactly the same so you'll want to switch them all over to a matching size asap so you don't have mismatched tires and something else fails. For your application I recommend picking up the Kenda Loadstar ST175/80D13 tire on a Galvanized wheel. We have part # AM3S130 which is a load range C with...
    view full answer...
  • Size Difference Between 4.80-12 Tires and 175/80-13 Tires
    A 4.80-12 trailer tire and wheel such as the Kenda # AM30630, when inflated will measure 20.7 inches in diameter and have a width of 4.9 inches. A 175/80-13 trailer tire and wheel will measure 24 inches in diameter and have a width of 6.6 inches so you do need to measure to ensure you have the necessary clearance. A great option for a 175/80-13 trailer tire and wheel with a 4 on 4" bolt pattern is the Loadstar # AM3S130 which has a galvanized wheel or the Loadstar # AM3S120 which has...
    view full answer...
  • Trailer Tire and Wheel With 4 on 4 Bolt Pattern
    The largest tire and wheel combination you can get with a 4 on 4" bolt pattern is going to have a 13" rim and 175/80-13 tire. This will give you a tire and wheel that is a total of 24" in diameter and 6.6" wide, which will be 7.9" larger in diameter and 2" wider than your current set up. Depending on the capacity you need, your options for this are the Loadstar # AM3S040, which has a 1,100 lb capacity at at 35 psi or the Loadstar # AM3S130 which has a 1,360 lb capacity at 50 psi.
    view full answer...
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  • Replacement Wheel and Tire for Size ST165/80D13
    The closest wheel and tire combo to what you have would be the ST175/80D13 part # AM3S130 which comes with a galvanized wheel. Or for just a wheel by itself the part # AM20222DX would work great as well.
    view full answer...
  • Loadstar ST175/80D13 Bias Trailer Tire with 13 Galvanized Wheel with a 4 on 4 Lug Pattern
    Yes, we do sell 4 x 4 1/2 " wide wheels with tires. The Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C item # AM3S130 has a 4" x 4" bolt pattern and the width of the rim is 4 1/2" from bead seat to bead seat. When you add the tire, the width is 6.6 inches total.
    view full answer...
  • 12 Inch Trailer Tire and Wheel Combo for a Boat Trailer Spare Tire
    We only sell new parts and I am sure we will have something that will work for you. For 13 inch tire and wheel combos with 4 on 4 inch bolt pattern we have options in tire size ST175/80-13. White steel wheel, load range B, rated for 1100 pounds at 35 psi use # AM3S030 White steel wheel, load range C, rated for 1360 pounds at 50 psi use # AM3S120 Galvanized wheel, load range B, rated for 1100 pounds at 35 psi use # AM3S040 Galvanized wheel, load range C, rated for 1360 pounds at 50 psi...
    view full answer...
  • Which Tire Size is Recommended to Replace B78-13 Tires on Tow Dolly
    The modern equivalent of your B78-13 tire size is a 175/80-13. Our tire and wheel assemblies in this tire size come with either a 4 on 4 inch wheel bolt pattern or a 5 on 4-1/2 inch wheel bolt pattern. So, if your existing wheels have a 4 bolt pattern, your best option is the Kenda Loadstar Bias Trailer Tire, which you can either get with a galvanized wheel part # AM3S130, or with a white wheel, part # AM3S120. Either one will have a 1,360-lb maximum load at 50 psi (load range C). Otherwise,...
    view full answer...
  • Recommended Tires, Hubs, and Suspension for Pontoon Trailer Rebuild
    I'm happy to help. Let's start with the wheels. I recommend the Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 4 on 4 - Load Range C # AM3S130. These wheels are galvanized so you won't have any issues with water and when combined with the tires are rated for 1,360 lbs each at 50 psi and speeds up to 81 mph. For your hubs, I need some bearing numbers from you or some measurements. To get these, you need to remove one of your hubs and on the face of the inner bearing,...
    view full answer...
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