Maximum PSI for Tires Size ST185/80R13

Question

Question:

Inflating Pressures for ST185/80R13? How much do inflate this Radial Tire?

asked by: Jared P

1

Helpful Expert Reply:

The Loadstar ST185/80D13 Bias Trailer Tire # AM1ST79 has a maximum psi of 65. It is recommended that ST trailer tires always be inflated to the maximum psi as stamped on the tire's sidewall because that is where the manufacturers test for a weight rating.

Inflating tires to a lower air pressure than the maximum reduces the amount of weight that the tire can handle to an unknown amount, which can cause the tire to fail if a heavier load is placed on the trailer. Tires at maximum air pressure also perform and wear best (plus, you'll get better gas mileage). Over-inflating or under-inflating a tire also affects the way the tire wears over time.

The psi should be measured when the tire is cold—usually, first thing in the day is a good time. I've attached an article on trailer tires for you as well.

expert reply by: Amber S

1

Answer 1

The psi rating for the Kenda Loadstar ST185/80R13 size tire, that comes on the combo #AM3S334, is 65 psi. This gives you a weight capacity of 1,710 lbs per tire.

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Answer 2

If you are getting a trans warning light on your 2007 Toyota FJ Cruiser then that would be something more like low fluid or a leak and not necessarily the temperature. The Derale Temperature Gauge Kit #D13009 requires that a hole be drilled into…

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Answer 3

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 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 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 6

From my research on the Harbor Freight 4x8 folding trailer uses 4.80-12 tires on a 12 inch wheel for the 1195 lb capacity trailer and a 5.30-12 for the 1720 lbs capacity trailer. It is a good idea to check your existing tires to see which size they…

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Answer 7

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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Answer 8

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 9

I am sorry I don't have any tires that are going to fit your rim. I do have a couple of comparable size tires that come in a wheel tire combo. I have listed the two below along with their lug patterns. 5 on 4-1/2 Lug Pattern - Kenda 205/65-10…

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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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Maximum PSI for Tires Size ST185/80R13

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