What is the Difference Between Load Range B and C Trailer Tires

Question

Question:

Besides the number of plies and load rating, what else separates the B and C rates tires? Are C rated tires generally harder than B rated tires? Do C rated tires last longer than B rated tires? The tires I purchase will be used for a boat trailer with 8inch X 3 3/4inch wheel rims

asked by: Jeffrey S

0

Expert Reply:

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same size but it will not increase the capacity of the trailer.

If you go with tire # AM10004 it is rated for 745 pounds at 90 psi. And tire # AM10002 is rated for 590 pounds at 60 psi. Both tires will fit 8 inch x 3-3/4 inch wheels. I have included a link to our help article on tires for you.

expert reply by: Michael H

0

Steve Q.

5/27/2020

Would there be any benefits to go from a 4.80 x 8 load range B to a 5.70 x 8 load range D on my boat trailer?

Chris R.

5/29/2020

The slightly larger 5.70-8 trailer tire like the Kenda # AM10013 would provide the benefit of a substantially larger weight capacity (1,075 pounds compared to 590 pounds on what you currently have) and would raise the trailer by about an inch. Whether or not this actually benefits you just kind of depends no your specific trailer. If you're pushing the capacity limits of your existing set then getting a larger safety margin is definitely a good idea - it'll allow the tires to run a bit cooler and hopefully last longer because of that. If you feel like you could use just a bit more ground clearance then the larger tire will work well too.

Steve Q.

5/29/2020

@ChrisR Thanks Chris.

Chris R.

6/2/2020

@SteveQ Anytime!

Answer 1

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…

view full answer...

Answer 2

A trailer that is over 80 inches wide is required by DOT regulations to have rear clearance lights. An over 80 inch taillight kit, like part #TL16RK, will have the side clearance light built into it. An under 80 inch taillight does not have the…

view full answer...

Answer 3

Trailer tires that are the same size but with different load ratings will have different capacities. A load range C tire will have a higher capacity than a load range B tire of the same size. The Kenda 4.80-12 Bias Trailer Tire with 12 Inch White…

view full answer...

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.

view full answer...

Answer 5

The Kenda K353 Bias Trailer Tire - 4.80-12 - Load Range B #AM10060 is rated for a max speed of 65 mph. I've attached an article that will assist with other questions you may have as well.

view full answer...

Answer 6

The modern day equivalent of a 20.5 x 8-10 tire is going to be a 205/65-10. The dimensions are as close as you can get to the old size. We have several tires and tire and wheel combos in this size with various bolt patterns (if a wheel is needed).…

view full answer...

Answer 7

I would be happy to help! For your 2021 Toyota Highlander there are quite a few different options but it will be dependent on if your vehicle is an XSE model or not. The EcoHitch #EH35VR, and etrailer #e75ZR will fit ALL models of the 2021 Toyota…

view full answer...

Answer 8

You would need to inflate the Kenda wheel and tires #AM35351DX that you have to their 65 psi max rating. The trailer's rating was for the tires it came with and would not be correct for the current tires you have.

view full answer...

Answer 9

When installed properly the portion of the bearing that attaches to the spindle should not spin. Only the outer portion should be spinning. It's pretty easy to overtighten a spindle nut since they don't have to be very tight so that would be…

view full answer...

Answer 10

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…

view full answer...

Answer 11

Yes, the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire #AM10140 referenced in your question will fit the same 12 inch wheel with a 4 inch width that your existing 4.80-12 size tires are mounted to. Just note that the ST145/R12 tire will be…

view full answer...

Answer 12

The Loadstar 4.80-12 Bias Trailer Tire with 12" Wheel #AM30670 does come with a galvanized wheel that has a silver color to them. The design of the galvanized process gives it a rough texture instead of a smooth texture like you see with…

view full answer...