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Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel - 6 on 5-1/2 - Load Range D

Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel - 6 on 5-1/2 - Load Range D

Item # AM3S870
Our Price: $224.33
You Save: $177.98
Trailer Tires and Wheels
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Shipping Weight: 48 lbs
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Kenda Tire with Wheel - AM3S870
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Bias tire has a ply rating of 8 and a 2,540-lb maximum load at 65 psi. The 15" diameter x 6" wide steel trailer wheel features a 6 on 5-1/2 bolt pattern and a corrosion-resistant powder coat finish. Great Prices for the best trailer tires and wheels from Kenda. Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel - 6 on 5-1/2 - Load Range D part number AM3S870 can be ordered online at or call 1-800-496-5010 for expert service.
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Kenda Trailer Tires and Wheels - AM3S870

  • Tire with Wheel
  • 15 Inch
  • 6 on 5-1/2 Inch
  • 225/75-15
  • Load Range D
  • Steel Wheels - Powder Coat
  • Bias Ply Tire
  • M - 81 mph
  • Kenda

Bias tire has a ply rating of 8 and a 2,540-lb maximum load at 65 psi. The 15" diameter x 6" wide steel trailer wheel features a 6 on 5-1/2 bolt pattern and a corrosion-resistant powder coat 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 - not intended for use on other vehicles
    • Advanced rubber compound
      • Longer tread wear
      • Low rolling resistance for smooth ride
  • 8-Spoke steel wheel by Dexstar
    • Resists rust with white powder coat finish over e-coat
  • Tire-and-wheel assembly meets Department of Transportation specifications
  • Wheel made in the USA


  • Rim dimensions: 15" diameter x 6" wide
  • Bolt pattern: 6 on 5-1/2"
  • Wheel capacity: 2,830 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 4.27"
  • Tire size: ST225/75D15
    • Section width: 8.4"
    • Outer diameter: 28.1"
  • Tire capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 2,540 lbs at 65 psi
  • Maximum speed: 81 mph (speed rating M)
  • Warranty:
    • 5-Year on tire
    • Limited 1-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.

Beveled Stud Holes

Beveled Stud Holes Front and Back

The stud holes on this steel wheel are beveled to ensure that the wheel stays tight against your trailer hub. This also eliminates the need to constantly retorque the lug nuts.

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"

3S870 Dexstar 8-Spoke 15" White Wheel and Loadstar K550 Bias Tire - LR D


Customer Satisfaction Score:

Customer Reviews

Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel - 6 on 5-1/2 - Load Range D - AM3S870

Average Customer Rating:  4.9 out of 5 stars   (7636 Customer Reviews)

Bias tire has a ply rating of 8 and a 2,540-lb maximum load at 65 psi. The 15" diameter x 6" wide steel trailer wheel features a 6 on 5-1/2 bolt pattern and a corrosion-resistant powder coat finish.


Good Experience, sorta...

I was torn
on how to write this review. Simply, the wrong item was shipped, but the etrailer team quickly got me the right item, once I worked through the process...
etrailer has been a good resource for me to get trailer parts for a few years, but like many, they seem to be struggling. Inventory, staffing, shipping, customer service, it all seems to be strained.
This is not the first order issue I have had in the last 2 years, and the return process is overly complicated. Why if they have my order number and the item number I need to return, do they need a photo of the item? Why can I not do an exchange? Why as I get requests for a review of my experience am I am sorting through the process of a problem with an order. It seems the right hand does not talk tot he left hand, and a person has to navigate through several different people to get a problem resolved.

So my suggestion is make sure you don't need to go through the return and re-order process, and etrailer, make returns and or exchanges easier.


Excellent tire at a fair price. Received product when promised. Will definitely buy more tires from this vendor in the future.


We use etrailer for nearly every component of the custom trailers we fabricate. Great parts, great service and great prices.


Came earlier than expected


Tire showed up at the right time looks good and the UPS man was smart enough to put the box on my trailer!! LOL

It works just fine Buying both the rim and tire together was a big help
Alan a - 09/09/2021


I ordered the 2 Tires Monday afternoon and they were shipped Monday. I received the tires on Thursday and realized that I had ordered the incorrect hole pattern. I email and they sent me return labels. The return shipping cost was taken out of my credit issued. I liked the tires and wheels very much so I reordered the correct size and ordered 4 more for another larger trailer.

Tires are holding up very well. Took a 500 mile trip with no problems. Put a lot of weight on the trailer, but it pulled very well, great tires for the price.
Calvin - 03/03/2019


Fast turnaround


Fast service and delivery. Able to track easily.


I put these tires on a two horse bumper pull trailer when we moved across the country last year. I had a lot riding on them literally and figuratively as we loaded up our horses in the middle of the summer to move and had these tires failed, we may have been stuck on the side of the road in 95 degree weather with live animals that would overheat quickly. Despite going through states with poor road maintenance and a couple thousand miles out on them on their main voyage, they functioned just I had hoped and still looked brand new after. All good since then as well, however we don’t use the trailer often or for long distances at the moment.


Very happy with the tires and wheels. I got them much sooner than I thought I would, which was free delivery! Tires and wheels came ready to mount. Very please with my experience with etrailer!

Tires and wheels are doing great! Have had no trouble at all with them. Great buy for the price and quality.
Kevin - 12/28/2020


Tires have held up fine after a year, but the initial disappointment of getting one with a bad valve and having to pay even more to have it repaired wasn’t a great start. Otherwise we have had no issues.


Tire and rim were shipped promptly and is an exact match for my tires and rims on my 2006 Sunnybrook camper. Reasonable price included shipping. My tire had shredded so I elected to get a tire and rim combo after having to use the spare to complete a trip. Customer communication was excellent and I am very happy with my purchase. Thank you!

After a year, my tire and rim are working perfectly and I still feel very good about this purchase!
Donald - 01/28/2019


A year ago, I ordered a set of (4) wheels and tires since I shredded an old tire on the way home one day, and my wheels on my second-hand trailer were rusted and did not match. Delivery was prompt, exactly as expected, and I am thoroughly satisfied with my purchase one year later. My trailer was once a "landscape" trailer and has faded, powdery blue paint which rubs off on you if you brush up against it. The new wheels and tires look fantastic and probably doubled the value of my trailer of twenty years and have certainly gotten my $$'s worth out of. I am now ordering new wiring and other trailer accessories from etrailer since I had such a great experience with them before, and I intend on keeping this ugly old trailer. etrailer has had my past business, they have my current business, and will have my future business as well.


As advertised. Customer service is grea t.


The excellent rating is for the delivery, they arrived in two days by UPS ground (initial estimate was 5-7 days). Since these tires & wheels have not rolled yet, it is hard to say how well they will perform. They replaced some very old 7.00-15LT's on my boat trailer, they should upgrade the look at the very least, and the 20% increased (tire) load capacity is a definite plus as a safety factor. The trailer bearings and brake system have been replaced, and the tires/wheels will top off the package.


I am very impressed with this website. A few weeks ago, I had a tire blow out on my 10K 6'x12' dump trailer when I had 3 tons of wood pellets on it on my way home. As soon as the old tire blew I pulled over and changed it out. I found the old tire and rim was destroyed. I searched locally for a new tire and rim for my trailer. I found that Les Schwabb's price for a rim and tire was $250 and the tire was very poor quality. I searched the web and found etrailer. I found the tire and rim I needed quickly and I also found it for about $100 dollars cheaper than Les Schwabb. I could not believe how expensive Les Schwabb was and how much they charged for a simple trailer tire and rim. I am very happy with the new trailer tire and rim I got from etrailer and I will continue to do business with etrailer from now on when I need things for my trailer. The trailer tire and rim from etrailer was much better quality than Less Schwabb. Definitely don't buy anything from Les Schwabb as they are a total rip off and greedy!


I recently bought a travel trailer. I asked about a spare and was quoted close to [$$$] for a spare tire, mount, and cover. I bought all of that for less than a third of the price from etrailer and mounted it in less than 15 minutes.
Great deal.


Ordered a spare wheel & tire for my recently purchased 2013 Haulin Trailer, it is an exact copy of the wheels and tires already on the trailer. Perfect Spare, received in a matter of 4-days, and no shipping cost. have been a customer for years and the only place I go for my RV and now enclosed trailer needs.


Ordered tire & wheel for my dump trailer. ETRAILER is the best company I have ever dealt with. The order was processed, shipped, and received in 3 business days. They send you emails and tracking info. Also the tire had an up to date, date code and shipping was free. I know who I will be buying my trailer items from, for now on.


Once again, extremely pleased with my order from etrailer. Ordering was easy. Product arrived quickly and was in excellent condition. Emails were sent to me from the company with status of shipping. My two trailer wheels and tires (AM3570) look great. This is a quality company in every way.


Fortunately I haven't had to use it I bought it as a spare The the other two tires on the trailer I bought from you new also and they have been great


Received the spare tire/wheel fairly quickly after ordering it


I appreciated the quick shipment and feel safer now with a spare tireon my boat ttrailer. As far as the tire/product itself, one can only trust it will work if needed.


I saw the reviews on this wheel and tire and feel that it will do exactly what I need when the time comes I have a blowout on the highway and need to use this. As always with my orders from etrailer, they have shipped in a timely manner and they care about customers feedback to help manage there products they carry. I would recommend them to anyone with trailer needs


I am very pleased with the tires and wheels I purchased, the price was very good and the shipping was very fast. The wheels are of excellent quality and it was nice to buy them with the tires already mounted. The tires also seem to be very good quality I will definitely be checking with etrailer for my trailer needs from now on.
Thanks for a great product.

Show More Reviews

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

  • How To Change To Smaller Wheel and Tires on Utility Trailer With 6-Lug 15 Inch Wheels
    If the hub on your trailer has a 6-lug bolt pattern, the smallest tire size that will fit is the 15 inch tire size. There are no wheels smaller than 15 inch with a 6-lug bolt pattern. You will need to change out the hubs on the axle to a bolt pattern like the 5 on 4-1/2 inch size to be able to use a smaller wheel and tire. To change out the hubs we would need the inner and outer bearing part numbers and the seal part number from your existing hub to select a hub with a 5 on 4-1/2 inch...
    view full answer...
  • Are Bias Tires Okay for Highway Use
    Yes, you can definitely use bias tires, like part # AM3S870 you looked at, on the highway. Bias tires weren't really designed for off-road use per se but they are better for it. Likewise radials are better for highway use than bias tires and you'll likely get more life out of them. But either work for either application. Bias tires were actually much more common on all trailers for quite some time because the cost of radials was a lot higher. Now that the prices are closer to the same...
    view full answer...
  • Backspacing of Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel # AM3S870
    The Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel # AM3S870 has a backspacing of 3.5 inches.
    view full answer...
  • Does Loadstar # AM3S870 Tire and Wheel Come Balanced
    The tire and wheel combos that we have available, including the Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel # AM3S870 that you referenced, do not come balanced like a standard passenger vehicle tire and wheel would be balanced at a tire shop. What the manufacturer does though is match the tire's heavy spot with the wheel's light spot when mounting them. This is a type of balancing that is sufficient for a trailer tire and there is no reason you would need to have them machined...
    view full answer...
  • Does the Loadstar Trailer Tire with Wheel Require Balancing
    The Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel part # AM3S870 as with any trailer wheel or tire will not require any sort of machine balancing. They are pre-balanced from the factory to an extent which is suitable for use on trailers .
    view full answer...
  • Replacement Tire and Wheel for a 7.00-15 Tire on a 15" Rim with a 6 on 5-1/2" Bolt Pattern
    We do have options for replacing your tire and wheel. We don't sell used tires and wheels, but the modern equivalent of the 7.00-15 tires are here. They are in fact 225/75D15. A good combination wheel and tire is the Loadstar Bias White Wheel, part # AM3S870. This wheel has the same 6 on 5-1/2" bolt pattern and is a 15" rim. The load range is D, and the ply rating is 8 (so slightly higher than your original tire). I've linked to a video review of this tire for you to look at.
    view full answer...
  • Backspacing of the Taskmaster ST225/75D15 Bias Trailer Tire with 15 White Wheel # AM3S870
    The backspacing for the rim of Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel # AM3S870 is 3-1/2 inches. I determined this by taking the wheel width (6 inches) adding 1 inch for both wheel lips (7) and then dividing that by 2 to give the backspacing of 3-1/2 inches. This is what the formula would look like. (6+1)/2=3.5 I attached an FAQ on trailer wheels and tires for you to check out also.
    view full answer...
    Image 1 for
  • Trailer Tire and Wheel Combo to Replace 7.00-15LT Tires on a Tandem Axle Horse Trailer
    The 7.00-15 tires you have now are still valid for use on trailers. We do carry one, # AM10414, but it does not come mounted on a wheel. I would need to know the bolt pattern your trailer requires to recommend a wheel. I have included a link to a help article that explains how to measure for bolt pattern. A 225/75-15 could be a fit though. Tire and wheel combo # AM3S870 has a 6 on 5-1/2 bolt pattern. The load range is going to depend on the gross trailer weight capacity. there should be...
    view full answer...
  • How to Determine Gross Trailer Weight on a Tandem Axle Horse Trailer
    I have seen trailer capacity information at the front of a trailer near the coupler, on the inboard side of the left side frame, but it really could be anywhere. If you cannot find it then I should be able to give a close estimate based on the inner and outer bearing numbers. You would have to pull off a hub to get to the bearings but with those numbers I should be able to tell you axle capacity at the very least. Another way to determine axle capacity is by the diameter of the axle: Typical...
    view full answer...
  • Where Should Axle Be Measured To Determine Weight Capacity
    The diameter of the axle would be the measurement of the axle itself. I recommend using a caliper to measure the axle between the spring seats under the trailer. I have attached a photo of an axle for you. On the photo you can see a couple of the places noted where you can take a measurement.
    view full answer...
    Image 1 for
  • Do the Trailer Tire and Wheel Combos Come Balanced
    The tire and wheel combos we carry are not machined balanced. You can have the tire and wheel combos balanced at a local tire shop if you wanted to. What some manufacturers will do is line up the light spot on the tire with the heavy spot on the wheel. This is a type of balancing but not like how car tires are balanced (with weights on a balancing machine).
    view full answer...
  • Wheel Offset of Taskmaster ST225/75D15 Bias Trailer Tire with 15 White Wheel # AM3S870
    Yes, this wheel has a zero offset. Nearly all trailer rims (including the part # AM3S870 that you referenced), have a zero offset. I attached a review video for this wheel/tire combo for you to check out as well.
    view full answer...
  • Can an ST225/75-15 Trailer Tire be Used in Place of a 7.00-15LT Tire
    The 7.00-15 tires you have are not exactly the same size as an ST225/75D15 tire. The 225/75 is going to be about 1/4 inch wider and a little over an inch shorter. So # AM3S870 would work as a temporary spare but not in the long term. You would want to get a replacement size 7.00-15LT as soon as you could. It does have the blue and red pin stripes on the wheel.
    view full answer...
  • Is it Necessary to Balance a Trailer Tire/Wheel Before Use
    The tire/wheel combinations that we sell, such as Loadstar ST225/75D15 Bias Trailer Tire with 15-inch White Wheel # AM3S870, are not fully dynamically balanced like an automobile tire/wheel. However, when mounted together the tire's low spot and the wheel's high spot are matched. This provides a degree of balancing but it is not the same as a true dynamic balance like what a tire shop does when they mount a new tire to one of your car's wheels. Trailer tires are less sensitive to balance...
    view full answer...
  • Why Do Trailer Tires Have Higher PSI Listing Than Passenger Vehicle Tires
    Passenger vehicle tires do typically have a have a recommended psi of between 30 and 35 psi, like what you mentioned in your question. Special Trailer tires, however, like the Loadstar ST225/75R15 Radial Trailer Tire w/ White Wheel # AM3S870 that you were looking at will have much higher maximum psi listings. This is simply because trailer tires are built with a thicker and stronger sidewall, enabling them to handle higher air pressure along with higher loads. The above mentioned Provider...
    view full answer...
  • Weight Capacity of the Loadstar ST225/75D15 Bias Trailer Tire
    The Loadstar ST225/75D15 Bias Trailer Tire with 15" White Wheel # AM3S870 that you referenced has a weight capacity of 2,540 lbs at 65 psi per wheel/tire. For a single axle trailer you would have a total tire/wheel capacity of 5,080 lbs and for a dual axle trailer you would have a total of 10,160 lbs. With trailer tires you want to have them inflated to their max PSI to get the full capacity.
    view full answer...
  • How to Pick Out a 15 inch Trailer Rim/Tire Spare
    Sounds like you need to first determine the bolt pattern of the hub that is on your trailer before you can pick out the correct replacement wheel/tire. I attached a help article that details how to determine bolt patterns. Next thing you need to know is the tire size of your current tires. This will be stamped on the sidewall of the tire. Since we know your rim is a 15 inch diameter rim I attached a link to a page with all of the 15 inch rim/tires we offer. You will need to select your...
    view full answer...
  • Replacement Wheel and Tire Recommendation for Trailer that Needs H78-15 Tires
    The H78-15 tire size is the same as the 225-75-15 like what is on the part # AM3S870 that you referenced. As long as your trailer hubs have a 6 on 5-1/2 inch bolt pattern this tire and rim combo would fit and work well for you. If you are unsure of your bolt pattern I attached a help article that covers how to determine this.
    view full answer...
  • Replacement Tires for Trailer Using 14.5x7 Tires
    Tire size 14.5x7 is common on ATVs and most often these are found on 12-inch rims. Such a tire has an overall diameter of 14-1/2-inches, so your measurement of 27-inches suggests that perhaps you have a different tire size? Tires with similar overall diameter to your measurement include the 205/75-14 size which are approximately 26.3-inches and size 215/75-14 which are approximately 26.7-inches in overall diameter. I linked for you a helpful article on tire sizing as well as our main...
    view full answer...
  • Loadstar Tire and Wheel Weight
    The weight of the Taskmaster Tire and Wheel Combo # AM3S870 you were looking at is 48lbs.
    view full answer...
  • Do Trailer Tires/Wheels Need to Be Balanced?
    Our trailer tire and wheel combinations, such as the Loadstar # AM3S870 you referenced, do not come balanced like automotive tires do. When the tire is mounted to the wheel, the high (heavy) spot on the wheel is matched to the low (light) spot on the tire. This leaves the wheel and tire adequately balanced for trailers. You may have the tire/wheel professionally balanced if you wish, but having perfectly balanced tires is not as important with trailer tires as it is with passenger vehicles....
    view full answer...
  • Recommended Air Pressure on Trailer Tires That Are Not Loaded to The Maximum Load Capacity
    We always recommend to run the maximum air pressure stated on the sidewall of the tire. That is the safest thing to do because then you have the maximum weight capacity covered for any type of load you will be hauling. On the Kenda Tire and Wheel Assembly, part # AM3S870, you have referenced, the maximum load capacity for the ST225/75D15 tire is 2,540 lbs at 65 psi. You can lower the air pressure in your tires, but that will lower the weight capacity of that tire. That would work fine...
    view full answer...
  • Does Provider ST225/75R15 Radial Trailer Tire Require Balancing
    The tire and wheel combos we carry are not machined balanced. You can have the tire and wheel combos balanced at a local tire shop if you wanted to. What our tire manufacturers will do is line up the light spot on the tire with the heavy spot on the wheel. This is a type of balancing but not like how car tires are balanced (with weights on a balancing machine).
    view full answer...
  • Will There Be Sufficient Clearance To Mount Kenda Tire and Wheel # AM3S870
    I walked out to our warehouse and pulled the Kenda Tire and Wheel, part # AM3S870. I measured from the back of the mounting flange on the wheel to the edge of the tire. I shot a video showing these measurements for you to checkout. I have also linked an FAQ on trailer tires.
    view full answer...

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