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Kenda K371 Bias Trailer Tire - 4.80/4.00-8 - Load Range C

Kenda K371 Bias Trailer Tire - 4.80/4.00-8 - Load Range C

Item # AM10004
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Kenda 8 Inch Trailer Tires and Wheels - AM10004
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Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 8" x 3-3/4" wheels; its maximum load is 745 lbs at 90 psi. Lowest Prices for the best trailer tires and wheels from Kenda. Kenda K371 Bias Trailer Tire - 4.80/4.00-8 - Load Range C part number AM10004 can be ordered online at or call 1-833-496-1390 for expert service.
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Kenda Trailer Tires and Wheels - AM10004

  • Tire Only
  • 8 Inch
  • 4.80/4.00-8
  • Load Range C
  • Bias Ply Tire
  • Kenda

Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 8" x 3-3/4" wheels; its maximum load is 745 lbs at 90 psi.


  • Great for off-road and agricultural use
  • Exceeds DOT requirements


  • Fits: 8" x 3-3/4" rims
  • Tire size: 4.80/4.00-8
    • Section width: 4.7"
    • Outer diameter (when inflated): 16.1"
  • Capacity:
    • Load range: C
    • Ply rating: 6
    • Maximum load: 745 lbs at 90 psi
  • 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.

10004 Kenda K371 Bias Tire - LR C

Customer Reviews

Kenda K371 Bias Trailer Tire - 4.80/4.00-8 - Load Range C - AM10004

Average Customer Rating:  4.8 out of 5 stars   (2338 Customer Reviews)

Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 8" x 3-3/4" wheels; its maximum load is 745 lbs at 90 psi.


I purchased these to replace the tires on my boat trailer. They fit the rim but seemed slightly smaller than the tires I took off. The only other thing I noticed is that the tires were made a few months apart and had slightly different lettering. The font or design was different between the two. Since I only had one on each side, it didn’t really matter. Nobody will ever notice it. The tire was as described and should fit the need perfectly. I have already pulled it a few times but nothing heavy, just a couple hundred pounds max including the trailer.

So far, so good. Still holding air and track great down the road.
Corey - 06/09/2021


Speedy delivery and high quality products.
ordered the RV tire cover as well as 5 trailer tires.
I had to replace the awful and extremely poor quality tires that came with the Farm-Tuff Utility Trailer — 2,200-Lb. Capacity, Model# 03813 wagon that i ordered from Northern Tool.

Tires still in great shape, even having endured a long snowy mountain winter.
Gary - 07/09/2019


I purchased one of these tires for my wheelbarrow last Spring. I live in the land of goatheads, prickly pear cactus, and other thorns; previous tires just didn't last. Very frustrating when you go to get the wheelbarrow and the darn tire is flat! This one has survived the Spring and all Summer without a hitch, flat or one single problem. I would highly recommend this option to anyone with a similar problem!
Can you tell which tire I like?

Thanks for writing this review!While shopping for new upgraded tires for my garden cart I read this and decided to upgrade my wheelbarrow tires at the same time.The difference between the normal wheelbarrow tire and this one is amazing and I expect it to be well worth the time and money to do it!SRC
-- comment by: SRC - 01/31/2016


I am very pleased with my tire order process, the speed of delivery, and the tires themselves. I used these tires as replacements for the original tires on my Triton LTX jet ski trailer. Exact fit and one load range better than I had. Very pleased.


A decent tire, a bit tricky to mount & get sealed on a tubeless rim. But no problems in service after that.


Good quality tire fit was exactly what I ordered,


I wore out 2 Carlisle tires on the other side of this trailer since I purchased this, so I bought 2 more matching tires with silver wheels and re"tired" this one to the spare even though it shows very little wear. Just wanted to change out the white rim. Only Loadstar from here on...

I use mine on a trailer for hauling 500-1200 pounds on a small trailer for my business. After a year they are still looking pretty new and holding air well. I appreciate the long wear life.
Christopher L - 04/13/2020


Quality products and quick delivery


Tire arrived on time, and is excellent quality. It was impossible for me to mount on the wheel; one side was convex and the other concave, so getting rim contact to contain air promised to be a problem, but I could not even force one side over the wheel rim. Took the tire and wheel to a local tire business, and was fortunate to see it done. The burly operator was able to force tire on wheel, but couldn't establish rim contact. After a futile struggle he attached a VERY high pressure air tank and injected a blast of air that was more like an explosion, forcing the tire to balloon out and make rim contact. After that, no problem...

The tire has proven to be of good quality and is wearing well.
Charles D - 01/22/2018


I love, love, love this trailer tire. I have purchased and installed six of these tires, on vintage Cushman 24volt Industrial Electric vehicles (3 wheelers) and they are a GREAT addition. Classic tread design, Art Deco, Saw-Tooth side-wall styling, and rugged tire design - a perfect tough tire that adds a great finishing touch to your vintage restoration project.

Still enjoying these quality tires, no issues!
John - 05/07/2019


My tires arrived quickly which was a plus as they were needed before I could travel. I had planned on taking ‘before’ photo’s but it seems I only took after photo’s. After installing and after driving 300 miles. The tires did well and I am pleased all the way around.


This really is the best tire for small trailers. This trailer is towed behind a motorcycle and all other tires have come apart even in as little as 100 miles. Typically, we run 3000 miles on a motorcycle trip and the tire is cost effective enough to be changed for every trip. I have not had one of these come apart in 100 degree plus heat at 70 mph.


Good price, arrived in two days.


This is my second purchase from As with my first purchase, is and will always be my first stop for all things RV, trailer and towing.
I can't say enough good things about George and his entire crew. Customer service is excellent,pricing is competitive and shipping is usually same day.
Keep up the fine work.


Looks good haven’t installed yet. It’d for a second spare tire package.

Good tires, but one caveat, if youre going to run these 8 tires at interstate speeds, change out the valve stems to metal. Even these brass-cored higher pressure valves will fail at the rim penetration due to vibration and centrifugal forces. I changed my two main and two spares out to these, works great and they hold pressure fine. These are available here at and other suppliers.
Thomas B - 09/24/2021


After having issues with the trailer tires on the trailer that I tow behind my touring motorcycle, I was pointed to these. I mounted them myself, used Dynabeads to balance them, and they went 2000 miles without a problem. Something the other tires couldn't do. Thank you for the recommendation.


Worked great for jet ski trailer


I ordered these tires, which came at a great price, for my small lawnmower trailer that may some day haul a motorcycle, and I must say I am more than pleased with product and service. The tires are all they are supposed to be and after selecting standard delivery they arrived in two days. Now that's service. I put these tires on in about two hours with a tire iron and a screw driver--no problem--I'm hauling mower. Need a tire? These guys are the tire people for me.

still a good purchase. will buy again soon for boat trailer.
Doug - 07/22/2016


The tires fit perfect installed easy and are still in service today. Definitely going to purchase future tires from Etrailer.


Product arrived ahead of schedule. Very pleased with ordering, delivery and product.
These tires replaced standard 2 ply tires on a small dump cart. The new tires are much stronger and should eliminate the constant flat tire problem. They are very stiff and will require proper equipment to install. I actually paid $5/tire for someone else to mount them, thereby saving my knuckles.


I am completely satisfied with my tires I purchased for my log splitter. from trailer. The tires arrived earlier than predicted (with an unrequested free shipping upgrade).

I checked the manufacturing date stamped onto the tire and the date was within an acceptable range, unlike some online sellers, who push the envelope on shelf life.

I upgraded from a Load Rating of A to C, which is overkill but hopefully will extend the life of the tire. The C rated tire was less expensive than the A rated version offered by other sellers.

I plan on buying more equipment tires from etrailer in the future.


Good quality tire. Fast Shipping!! Ordered Monday, Delivered Wednesday morning, Back splitting wood Wednesday afternoon. Thanks


Exactly what I wanted. Dozens of regular tire stores and auto parts stores do not carry these small size trailer tires. Even RV, camping, and boating dealers don't; they just have larger tires/wheels for bigger rigs.
I spent an entire morning searching around San Diego to replace a trailer tire that had blown out on the freeway. Fortunately I had a spare tire/wheel with me but was reluctant to get back on the road without another spare.


It's been a year now and all I can say is that etrailer has provided me with the product(s) I need for a multitude of different jobs/projects... They feature in depth inventory, great specs./description, high quality at a good price, prompt shipping and all round EXCELLENT service... I can ask for nothing more, thanks.... Sam


I ordered 2 of these 6-ply tires from e-trailer in July '14 after I blew one of my previous 4-ply tires (different brand) and have had good luck w/ the Kenda's after approx 1,000 miles. These are mounted on a 1967 Cox Cadet pop up camper - approx 750 lbs. I just ordered 2 more for spares for a couple of long upcoming summer trips. The Kenda's seem like one of the better quality tires in this size that I've found out there. E-trailer service was fast, and for the first set purchased in July, I had e-trailer 2-day the new pair to my next RV campsite in Asheville NC & they were waiting for me when I arrived!

Show More Reviews

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

  • Are Tire Weight Capacities Per Tire or for a Pair
    Yes, trailer tires are rated by tire. So for example, the Kenda 4.80/4.00-8 Load Range C Tire, part # AM10004, is rated up to 745 pounds at 90 psi. Two tires on one axle are rated up to 1,490 pounds. You still need to verify the weight capacity of the other components of your trailer. You'll always be limited by the lowest rated piece of the puzzle.
    view full answer...
  • Compatible 4.80 X 8 Trailer Tire That Can Handle Highway Speeds
    For that size tire, 4.80 X 8, I recommend the Kenda tire, # AM10004. This tire has the Load C rating and fits the 8 inch x 3-3/4 inch rim. Using the heavier load range could extend the life of this tire. The Kenda tire is a bias tire that tend to run hotter than radial tires. The killer of all tires especially trailer tires is heat. Unfortunately, there are no radial tires in the 4.80 X 8 tire size. However, bias tires will usually have a stronger sidewall so they can handle more road...
    view full answer...
  • Do Replacement Tires for Cycle Mate Trailer Need to be Balanced
    The Kenda K371 Trailer Tire # AM10004 can be balanced but it isn't necessary to balance them like vehicle tires, however they can be if you'd like. The tire and wheel combos that we sell are balanced by lining up the light spot on the tire with the heavy spot on the wheel. This is a type of balancing often used for trailer tires.
    view full answer...
  • Recommended 8-Inch Tires For Trailer
    The tires we offer are quality and we have had great reviews. I was unable to find the tire you mentioned. As far as comparing the tires, you can look at the sidewall of the tires you have and compare the features like maximum load and ply. I recommend the Kenda K371 Bias Trailer Tire, part # AM10004. This is a Load Range C bias-ply tire with a maximum load rating of 745-lbs at 90 psi. The # AM10004 tire is a 6-ply tire.
    view full answer...
  • How to Decipher Trailer Tire Size Numebers
    The size 400/480 and 4.00/4.80are the same tire size. The 400/4.00 designation referrers to an older tire size that is no longer available and the 480/4.80 size will replace the older model sized. Therefore, a tire like the Kenda Bias Trailer Tire, # AM10004, will fit both 4.00 and 4.80 size tires. On your current tires, the 4.80 number represents the section width of the tire, or the width across the tread. The second number is the wheel diameter size. You have a wheel that has a 8...
    view full answer...
  • Recommended Replacement 4.80/4.00-8 Boat Trailer Tires
    Generally speaking, a radial tire is going to have a few improved differences when compared to a bias tire like what you currently have on your trailer. A radial tire will flex more than a bias tire, giving it better ground contact, traction and stability. They will also run a bit cooler, especially when the tire is under a heavy load. One advantage a bias tire does have over a radial is a stiffer sidewall, a feature that is useful for off road applications. The 4.80/4.00-8 trailer tires...
    view full answer...
  • Higher Speed Rating tire for Size 4.80/4.00-8
    I can't recommend you exceed the speed rating of your trailer tires. We do carry a tire in your size though of 4.80/4.00-8 which does have the correct speed rating. The part # AM10004 has a 65 mph speed rating which would at least be a little higher than what you have.
    view full answer...
  • Available 8-Inch Trailer Wheels and Tires
    We carry a range of 8-inch trailer wheels, tires and pre-mounted wheel/tire combination items that you can see by clicking on the linked page. The wheels are available in either 4-on-4 or 5-on-4-1/2 bolt patterns and the tires are available in several sizes including the three most popular options, 215/60-8, 4.80/4.00-8 and 5.70-8. You can also choose the tire Load Range, which is how much weight it can carry. Load Ranges B, C and D are available across the offered sizes. If you want...
    view full answer...
  • Can the Pilot Hole on a Trailer Wheel Be Larger than the Center of the Hub
    If your wheels secure to the tire using lug nuts then having a larger pilot hole on the wheels than the hub bore is perfectly fine. But if the wheels secure using lug bolts and not lug nuts then the pilot hole should be exact (or just a tiny bit larger).
    view full answer...
  • What is the Difference Between Trailer Tire Sizes 4.80-8 and 4.80/4.0-8?
    You have asked a question that has confused many people. The tire size 4.80-8 and the tire size 4.80/4.0-8 are absolutely identical. The numbers reference a new system versus an old system of measurement. The new system is the first number 4.80-8 and the other number was the older system. We reference both numbers because many people are reading the numbers directly from their current tire when seeking a replacement. Their specific tire number reference could be either the new or old...
    view full answer...
  • Woodsplitter 4.80-12 Replacement Tire Recommendation
    For a tire to replace the 4.80-12 that you have installed on your wood splitter you would want the part # AM10062. This is the same size as what you have and would work well. I attached a review video for this tire for you to check out as well.
    view full answer...
  • Do Speed Ratings of Trailer Tires Vary Based on Tire Size
    Trailer tires are generally rated for a maximum speed of 65 mph. This is true for both radial and bias ply types. The tire diameter does not have a direct relationship to its speed rating. What is most important for any trailer tire is that it be inflated to its specified psi. The load rating for any tire is dependent upon it being inflated to its maximum rated psi. For example, if a tire were rated for a load of 1000 lbs at 90 psi and were inflated to only 80 psi, it would not retain...
    view full answer...
  • Does a Spare Tire have to Match the Regular Tires on a Boat Trailer
    Having a different rating and psi rating on a spare is permissible so long as you do not have to go far to get a new tire and as long as the capacity of that tire is enough for the capacity of the trailer. Ideally, your spare tire should be exactly the same as the regular tires to avoid any compatibility issues. Not only should the spare be the same size, capacity, load range, and have the same psi rating but it should also be the same construction; either bias ply or radial. Tire #...
    view full answer...
  • What are the Torque Ratings for the Lug Nuts on a 4.80-8 Trailer Tire and Wheel
    You likely have 1/2 inch lug nuts on your trailer. For 1/2 inch lug nuts tighten them down to 75 to 85 foot pounds. If you have a different size let me know what it is and I can determine the appropriate torque specifications for you.
    view full answer...
  • Tire Pressure Recommendation for a 4.80/4.00-8 Load Range C Trailer Tire
    Most likely the recommended tire pressure for the Load Range C 4.80/4.00-8 tire you have is 90 psi. However, you should check the print on the side of the tire as the max pressure should be listed there. It is important to always have trailer tires inflated to their max psi as a trailer tire is only good for its full capacity when it is inflated to its max psi. I attached an FAQ article on trailer tires for you to check out also.
    view full answer...
    Image 1 for
  • Durability of Kenda K371 Bias Trailer Tire, # AM10004, For Extended Highway Travel Under Load
    The Kenda K371 Bias Trailer Tire, # AM10004, is rated for speeds not exceeding 65 miles per hour. Provided that the tire is not overloaded (one tire is rated at 760 pounds at 90 psi) and it is inflated to the maximum psi rating of 90 pound per square inch, then the tire will last a long time and perform well for you. Trailer tires have thicker sidewalls that allow them to carry a heavier vertical load. If the tire is under inflated, it can cause the sidewall to heat up quicker and more...
    view full answer...
  • What is the Difference Between a 4.80/4.00 x 8 Trailer Tire and a 4.80 x 8 Trailer Tire
    The 4.80/4.00x8 tire size is exactly the same as a 4.80X8 tire as long as the load range is the same. The Kenda K371 Bias Trailer Tire, item # AM10004, is a load range C tire. The 4.00 is added to the tire description so that those who have the older 4.00x8 tires, which are no longer available, will know that this size is compatible with their trailer. I have linked an FAQ on tire sizes.
    view full answer...
  • How To Determine Tire Size Needed for 1987 Boat Trailer Wheels
    If you measured the wheel diameter from the outer edge of one side to the outer edge of the other side and it was 9 inches, it is probably a 8 inch diameter wheel. Wheel diameters are measured from where the tires bead will be seated on the inside of the wheel. If it has 4 lugs it is a 4 on 4 inch bolt pattern. I am including a short video that will show the how the measurements are taken on a wheel. The wheels I have that are 8 inches with a 4 on 4 bolt pattern will have a width of 3-3/4...
    view full answer...
  • What is the Best Way to Determine the Correct Bearings on a Snowmobile Trailer
    The definitive way to determine the bearings needed for any trailer is to remove the hub and inspect the bearings. The bearing numbers will be stamped into the metal of the bearings. If you have a round axle and can determine the diameter of it, along with the wheel size, bolt pattern, and any other information you can provide, I may be able to determine what the correct bearings are. I have included a link to a video that might help if you decide to take the hub off.
    view full answer...
  • Trailer Tires are Wearing Only in the Centers on Boat Trailer
    When you get wear just in the center tread of a tire that does indicate that the tire is over-inflated. But if the tires are inflated to the maximum psi as indicated on the side wall, then that is the correct procedure for trailer tires. I think part of the issue is that the trailer is not heavy enough to flatten out the tire tread a little more. I would not recommend removing too much air because doing so will result in excessive heat build up. But I ran this by our tire and wheel expert...
    view full answer...
  • 4.80/4.00-8 Tire Recommendation for Swisher Trail Cutter
    The Kenda K371 Bias Trailer Tire # AM10004 should work fine for you since it is the same tire size as what you have on your brush hog. The slight rim width difference shouldn't matter for your application. We do not carry tubes though, so you will have to find them somewhere else or reuse your current one if it is still good.
    view full answer...
  • Can a 4.0-6 Tire Tube be Used with a 4.8-/4.00-8 Tire on a Sailboat Trolley
    A 4.0-6 tube would be too small. You would need the proper tube and a tire that takes tubes or you would need to switch to tubeless tires as long as the wheels are compatible. Tire size 4.80/4.00-8 fits in 3-3/4 inch wide wheels. the width is measured from bead seat to bead seat under the tire where you could only measure it with the tire off. The overall wheel width would be about 1 inch wider. If the old tire size is 4.80/4.00-8 then this tire should fit just fine. You would want to...
    view full answer...
  • Replacement Tire For Wood Splitter
    The k8a8 to8 number you referenced sounds like it may be a DOT number and actually not the size of the tire you need to replace on your wood splitter. If you can find the tire size on the tire it will make it much easier to recommend a replacement. I have attached a link to our product page for the 8 inch tires we offer. You may find a number like 4.80/4.00-8 on the tire, which would be similar to our Kenda K371 Bias Trailer Tire, part # AM10004. I have attached a helpful article about...
    view full answer...
  • Lug Nut Torque Rating for a 5-Lug Trailer Wheel
    The correct torque for installing lug nuts on your 5 X 8 trailer's 5-lug wheels will depend on the size of the lugs. For a 1/2-inch lug the torque spec ranges from 75- to 85-ft-lbs. For a 9/16-inch lug the torque spec ranges from 135- to 145-ft-lbs. Please refer to the linked chart. You will want to avoid using an impact wrench or any other tool that cannot provide measured force. Use a torque wrench for accurate results. You should re-torque them at 10 miles, 25 miles, and 50 miles, and...
    view full answer...
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