Why Do Larger Trailer Wheels and Tires have Higher Capacities

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Question:

i have a travel trailer and it has 15 inch tires on it and junky china tires from the factory, i want to upgrade my tires but dont want to buy new wheels why does it seem that the stronger the trailer tire are the larger the rim wheel? also the G rated tires are all around 110 psi max not sure what the rating is on my current wheels is this an issue?

asked by: Mike

0

Expert Reply:

Larger wheels and tires for trailer generally have higher towing capacities as they have more material to spread out the weight and because the manufacturers know that the larger sizes are typically needed for larger trailers which weigh more so they make them with capacities high enough.

Higher psi ratings typically are fine with the rims but you will need to make sure the valve stem is rated for it as that is typically the weak point.

For a 15 inch wheel I really like the part # TR225LRE which has a higher Load Range E and has a speed rating of 81 mph instead of most trailer tires that are only rated for 65.

expert reply by: Jameson C

0

Answer 1

Going to a tire with a higher rated load range will mean you will need a higher psi rating. The problem with going to a higher rated tire is that it may result in a stiffer ride. For example, a Load Range E tire like part #TR225LRE is rated for a…

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Answer 2

Going with the larger diameter 225/75-15 tires would move the top of your tire around a 1/2 inch closer to the underside of the trailer. Since we usually like to see at least 3 inches of clearance with the trailer loaded per usual I really…

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Answer 3

The Provider #TR225LRE is manufactured in China, as are most tires these days. Even though they are not made in the USA, they are a great tire with great reviews. We used to carry Goodyear tires that are made in the USA, but the range of available…

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Answer 4

The Westlake ST225/75R15 Radial Trailer Tire #LHWL304 will be an ideal upgrade for your current tires. This will have an E load range, which puts it up to 2,830 pounds at 80 psi. This is also a radial tire, which will run cooler than a bias ply…

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Answer 5

The load and speed ratings of the ST225/75R15 trailer tires your 2017 Dutchman Aspen travel trailer are maximum capacities for the tires themselves. The 75-mph maximum speed of an L-rated tire does not indicate a recommendation to tow a trailer at…

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Answer 6

I've linked our selection of 205/75 R15 tires for you. They're all made in Asia. It's pretty hard to find tires made in US anymore. Of the selection I recommend the Westlake #LHWL300. It's a load range D tire with a max load of 2,150…

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Answer 7

Trailer tires like the Westlake ST205/75R14 Radial Trailer Tire #274-000012 are not given heat ratings. The heat ratings are something that is given on passenger car/truck tires as a requirement by government agencies. Trailer tires are not subjected…

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Answer 8

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

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Answer 9

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 10

The number you provided, "7753400" is a patent number which corelates to the Equalizer for E-Z Flex Suspension part #013-144-03. This is for a single equalizer but if you need the entire kit it's the Dexter E-Z Flex Suspension Kit part…

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Answer 11

I would love to help you upgrade the suspension on your Twilight 2800 travel trailer. The MORryde Rubber Equalizers for Tandem Axle Trailers #MR87ZR that you referenced are a great solution but we do need to double check a few things. First is that…

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Answer 12

For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside…

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Why Do Larger Trailer Wheels and Tires have Higher Capacities

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