Class C or D ST185/80R13 Trailer Tires

Question

Question:

My current boat trailer has a load c rating. St185/80r13 boat weight is about 2200 lbs. Should I stay with class c or move up to class d? Not sure if its harder to pull a class d but like the idea of higher speed and weight rating.

asked by: Paul

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Expert Reply:

It won't be harder to pull; a Class D with its 1,710 lb per-tire capacity is certainly viable and move up for the higher capacity and speed rating. Go with the 81 mph Kenda Karrier ST185/80R13 Radial Trailer Tire - Load Range D # AM10208.

expert reply by: Kyle S

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Answer 1

The highest rated 13" trailer tires we offer are the Kenda Karrier ST185/80R13 Radial Trailer Tire part #AM10208 which have a load range d rating suited for use up to 1,710 lbs. These are radial tires which is best for highway travel. They will…

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Answer 2

Most trailer tires out there now are made in China but I would say that the Kenda Karrier part #AM10208 that you referenced is a reliable tire that will work well for you. We've sold quite a few of these tires and have had thousands of reviews at…

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Answer 3

The Kenda Karrier ST185/80R13 Radial Trailer Tire - Load Range D #AM10208 should be inflated to its max 65 psi. On trailer tires you want to inflate the tire to the maximum cold psi, which on this tire is 65. Doing this will give you the best…

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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

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 6

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…

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Answer 7

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 6-1/2 inch whereas the 225/75-15 fits widths that are 5 inch to 6 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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Answer 8

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

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Answer 9

The 12 inch tires that we carry are rated for 65 miles per hour. Any faster than that for extended periods and the excessive heat build up will cause tire failure. To get a tire with a higher speed rating you would have to go up in size. That also…

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Answer 10

Good morning, Cliff. As of today (3/27/24) we are expecting the #KE33JR tire/wheel combo to be in stock in about 2 weeks. Hopefully this means we can take our own pictures and put them on the site within maybe about 3-4 weeks from now. What I can…

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Answer 11

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 12

We offer both of the trailer tire sizes you mentioned, ST175/80R13 and ST185/80D13. In terms of size they are very close to one another; the ST175/80R13 size measures 24.1-inches in diameter and 6.9-inches wide while the ST185/80D13 size measures…

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Class C or D ST185/80R13 Trailer Tires

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