Smallest Tire Available with Capacity Greater Than 1600 lbs for Pontoon Boat Trailer

Question

Question:

I am totally confused about tire size and load ratings of B,C etc. In one response I saw the Laod B was about 1450 lbs and C was about 1750 lb - BUT when I look through the tire ions I see the tires rated B or C vary all over the place as to load capacity - Whats up with that? Specifically I am looking for the smallest TOTAL diameter tire the will carry a load of 3200 lbs on two tires/1 axle - I have a pontoon trailer that I need to lower its height by several inches Thanks for your time

asked by: Joe

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Expert Reply:

If you compare two tires of the same manufacturer and tire size, load range B tires should all have the same capacity, same for load range C or D.

A 205/65-10 tire like part # AM1HP56 has a 1650 lb capacity at 90 psi. Two tires would give you a 3300 lb capacity. Wheel/tire combos are also available. For a 4 on 4 bolt pattern, use part # AM3H470 or for a 5 on 4-1/2 bolt pattern, use part # AM3H490.

To get a higher capacity than that, you'd need to go with a larger tire like a 215/75-14, like part # AM1ST86 for a bias ply or # AM10234 for a radial tire. Both are available as a wheel/tire combo on a 5 on 4-1/2 inch bolt pattern wheel like # AM3S450 for bias ply or # AM32156 for a radial. The bias ply has a 1760 lb capacity at 50 psi and the radial has a 1925 lb capacity at 60 psi. These tires are probably larger in diameter than what you had in mind.

expert reply by: Mike L

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Answer 1

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Answer 2

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Answer 3

You likely aren't going to notice any difference at all. A 145/R12 tire, like part #AM10140, is around 21.3 inches in diameter and a 20.5x8-10, or a 205/65-10 to use the current sizing, around 20.5 inches. So your current tires are less than an…

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Answer 4

We have ST145/R12 trailer tires with a load range E, the Kenda Karrier S-Trail #AM10140. If you wanted to go to a larger tire and wheel you could do so but you would need to ensure you have the needed clearance of about three inches from your trailer…

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Answer 5

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Answer 6

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Answer 7

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Answer 8

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Answer 9

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Answer 10

The closest radial tire size I would have to replace the 4.80-12 bias tire size is the Kenda Karrier S-Trail ST145R12 Radial Trailer Tire #AM10130. The 4.80-12 bias tire is 20.7 inches tall and 4.9 inches wide. The 145R12 radial tire is 21.3 inches…

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Answer 12

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