Replacing Valve Stems to Increase PSI Rating of Rim to Equal Tire

Question

Question:

My OEM tires are 205 75 14. If I go to a load range D tire with 65 PSI, will my OEM rims handle that? There are no markings on the rim to indicate what PSI is Max .

asked by: Fred

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Expert Reply:

The psi rating will be determined by either the tire or the valve stem of the wheels. If you upgrade your tires you can upgrade the valve stems to meet the necessary psi.

We carry several options. Americana # AM20903 are rated up to 65 psi and # AM20904 are rated up to 80 psi.

Or for heavier trailers we have # AM20907 rated up to 100 psi and # AM20906 rated over 100 psi which are metal.

expert reply by: Charles S

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Answer 1

As long as you are under the weight capacity for the wheel/tires as well as stay under the speed rating for them you'll be fine. For example, we have the Kenda 205/65-10 Bias Trailer Tire with 10" White Wheel #AM3H410 which has a weight…

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Answer 2

For American steel trailer wheel #AM20046 and a tire that requires 70 psi you will need valve stem #AM20904.

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Answer 3

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 4

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 5

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 6

Your math is correct in your trailer weight load example. If a fully-loaded tandem axle trailer weighs 4000-lbs then each of the 4 tires will bear 1/4th of that load, or 1000-lbs. In this case a tire rated for 1300-lbs would provide a good safety…

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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

You can add larger wheels and tires to a trailer as long as you have enough room for the larger size. The main clearance issues we find when putting larger tires and wheels on a trailer is from the top of the tire to the fender and from the inside…

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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

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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