What PSI to Run Westlake Castle Rock ST205/75R14 Load Range C Tire

Question

Question:

I have an Aluma 5 x 8 x 4.5 enclosed aluminum cargo trailer. Tare weight 700 lbs. GTWR is 2,900 lbs. 3,500 lb. rated torsion axle. Loaded, the trailer is evenly loaded side to side and the cargo weight is 772 lbs. Thus total trailer weight 1,472 lbs. Tires are Westlake ST205/75R14 LR C on aluminum wheels. Each tire carries 736 lbs. What cold inflation pressure should I use? Load and inflation charts are all well above the actual GTW, starting at about 850 lbs. and 25 psi.

asked by: Michael M

1

Helpful Expert Reply:

Your Westlake Castle Rock ST205/75R14 Radial Trailer Tire - Load Range C # LHCK201 should be inflated to their max 50 cold psi. With trailer tires, you always want to inflate them to the maximum cold psi to give you the best performance. The only tire with an inflation chart is the Goodyear Endurance model, but with all other trailer tires the manufacturers recommend inflating to the max psi.

expert reply by: Kyle S

1

Answer 1

For extended highway use I recommend going with a trailer tire with a higher speed rating as that will help prevent heat build/failure. For the size you listed the best option will be the Taskmaster part #TR20514 which is a 205/75R14 that has a…

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Answer 2

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…

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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

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 5

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 6

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 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

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 9

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 10

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 11

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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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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What PSI to Run Westlake Castle Rock ST205/75R14 Load Range C Tire

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