What Is The Speed Rating For The Kenda 5.70-8 Bias Trailer Tire AM30100?

Question

Question:

What is the speed rating. Please confirm 81 mph.

asked by: Joseph

0

Expert Reply:

Hi Joseph!

The Kenda 5.70-8 Bias Trailer Tire with 8" White Wheel - 5 on 4-1/2 - Load Range B # AM30100 is actually rated up to 62 mph (which is standard for basically all 5.70-8 trailer tires), not 81 mph. To get to the M speed rating (81 mph), you would need to go with a different set up.

We do have an option for that, but it will be quite a bit different. That would be the Kenda 215/60-8 Bias Trailer Tire with 8" White Wheel - 5 on 4-1/2 - Load Range D # AM3H323. This has the exact same 18.1" outer diameter as the # AM30100, but it is quite a bit wider (8.9" for this whereas the # AM30100 is 5.8"). This is also a Bias tire, but it has a Load Range D (1,165pounds at 70 psi) and is also stiffer with its 8 ply sidewalls. If you have the room for it, it would be the way to go.

What kind of trailer are you wanting this for?

expert reply by: Lazer S

0

Kenda AM3H323
(click to enlarge)

Shane

6/25/2026

I'm even more confused....the description says AM30100 is M rated (81 MPH), but the expert reply says only 65mph. Which is correct, the description or the expert? Thank you

Lazer S.

6/25/2026

@Shane Where are you seeing that on the page? I couldn't find that listed anywhere on the page for the tire/wheel combo or for the tire alone (part # AM10010). And actually, I was slightly off when I said it was rated to 65 mph. It's actually J rated, which is 62 mph. I updated that in my answer as well. And before you ask, I asked Kenda and that's where I got the J rating.

Shane

6/25/2026

@LazerS Kinda snippety with your answer for a customer service "expert". I wasn't going to ask where you got your J rating. It's in the description along with all the other details. It also shows up if you filter 5.70-8 tires/wheels by speed. You can choose 65mph or 81mph. I have pasted below the text from the product page, since I can't add pictures. Kenda 5.70-8 Bias Trailer Tire with 8" White Wheel - 5 on 4-1/2 - Load Range B Kenda 5.70-8 Bias Trailer Tire with 8" White Wheel - 5 on 4-1/2 - Load Range B Kenda Trailer Tires and Wheels (7741 reviews) Code: AM30100 Our Price: $59.45 In Stock Add to Cart Trailer Tires and Wheels Tire with Wheel Bias Ply Tire Load Range B 5.70-8 8 Inch M - 81 mph 5 on 4-1/2 Inch Steel Wheels - Powder Coat Kenda

Lazer S.

6/25/2026

@Shane I wasn't trying to be snippety with my response, just trying to answer any unasked questions. But I can say with 100% certainty that our website is incorrect in that aspect and I will have it updated. It should not be saying this is rated for that kind of speed and is potentially dangerous to do so.

See All (5) Replies to Shane ∨

Answer 1

For smaller tire sizes like the 4.80-8 that you mentioned the highest speed rating we have is 65 mph like the part #AM10002. This is in part due to the smaller diameter of the tire which means it will be spinning more revolutions at the same speed as…

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Answer 2

The CE Smith Boat Trailer item #CE48810 is rated for a maximum speed of 65 mph. It is equipped with 4.80/4.00-8 bias ply tires that feature a speed rating of 65 mph. This is standard for most trailer tires. You won't have any problems at all with…

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Answer 3

The tire size you referenced, 4.80-8, and 4.80/4-8 tire are interchangeable. The width is just slightly different, but will fit the same size wheels. The older tire size use to be a 4.00-8, so the 4-8 is added to the tire description so that those…

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Answer 4

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 5

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 6

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 7

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 8

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6 inch whereas the 225/75-15 fits widths that are 5 inch to 6-1/2 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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Answer 9

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 10

I apologize for any confusion on what the proper torque specs are for 1/2 inch lug nuts on trailer wheels. I attached a picture of a chart to the right that details what the proper torque specs are for a trailer wheels lugs based on lug size, wheel…

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Answer 11

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 12

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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What Is The Speed Rating For The Kenda 5.70-8 Bias Trailer Tire AM30100?

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