Proper Tire Pressure on Kenda Karrier ST 225/75 R15 Load Range E Tire

Question

Question:

I have four Kenda Karrier ST 225/75 R15 load range E tires on my 30foot Airstream, which has a GVWR of 8,300 LBS. What is the correct PSI for the tires to be inflated to? I have read conflicting comments anywhere from 65 PSI to 80 PSI. The information on the sidewall of the tire, is not clear, and confusing, advising a referral to the manual, which I did not receive on purchase. Your assistance is appreciated.

asked by: Errol L

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Expert Reply:

The 225/75-15 Kenda Karriers with a Load Range of E are part # AM10303. I went out to our warehouse and verified the tire's maximum psi is 80 and has a maximum weight capacity of 2,830 pounds.

Special traier (ST) tires should always be inflated to the maximum air pressure. If it's inflated to a higher or lower psi the maximum capacity of the tire is unknown because it won't perform as it's designed which will cause uneven wear, excessive heat, and eventually failure. You also want to always inflate the tires when they're cold.

expert reply by: Charles S

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Answer 1

The Kenda tire like what's used on the #AM32161 in size ST205/75R14 are rated for 81 mph, a similar wheel/tire combo from Taskmaster would need to be purchased separately because we don't currently have a combined option from that…

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Answer 2

The tire size you mentioned indicate a radial tire, though the Loadstar tires are bias. However, the tire pressure is still going to depend on the load range of the tire. For example, the Karrier ST205/75R15, #AM10244, with a load rating of C, has a…

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Answer 3

You will want to make sure the Karrier ST205/75R14 Radial Trailer Tire w/ 14" White Spoke Wheel #AM32161 is always aired up to the Max air pressure rating of 75 PSI no matter the load you are carrying. Trailer tires are designed to always be…

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Answer 4

Each of the Karrier ST225/75R15 #AM10303 weighs 32 lb.

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Answer 5

I can end this debate for you real fast! Trailer tires, which will have an ST in front of the size, should always be inflated to the maximum psi indicated on the tire. Trailer tires usually do not have a recommended and maximum psi indication so I am…

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Answer 6

Depends on the size of the trailer tires, without knowing what you have and that your current rims are 5-1/2 inches wide you most likely have the tire size 205/75-15 which could do either a 5 inch or 6 inch wide rim. The #AM20447 that you referenced…

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Answer 7

I'm assuming that your horse trailer is a tandem axle trailer since most are and if that is the case, then your load range C tires are more than capable of handling your trailer and your horses. The ST225/75R15 load range C tire that we carry,…

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Answer 8

Yes, a valve stem like the Americana #AM20904 that features a maximum tire pressure of 80 psi refers to its cold inflation rating. You can absolutely use a wheel with an 80 psi valve stem for a tire that has a maximum psi rating of 80.

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Answer 9

The tire size you listed isn't a standard trailer tire size, but the Dexstar Steel Mini Mod Trailer Wheel #AM20545 that you referenced could have a 235/75R15 mounted to it pretty easily. You should note that this wheel is designed and rated for…

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Answer 10

Other than the color and the width of the rim, the two wheels you mentioned are constructed of powder coated steel and feature the same design. The silver 15x6 wheel, part #AM20537 has the larger capacity, at 2050 lb, while the black 15x5 wheel, part…

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Answer 11

Dexstar Steel Mini Mod Trailer Wheel #AM20545 does not have any offset. I confirmed this with Dextsar. Also if a wheel does have offset we will indicate this in the item's specs. This Dexstar wheel is a 15 x 6-inch size with a 5-on-4-1/2-inch…

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Answer 12

We have many wheels that will work with the ST225/75R15 tire size. I have attached a link to all of your options as these tires will fit a standard 15x6 inch rim in the 6 on 5-1/2 bolt pattern. You will want to make sure the valve stem you use allows…

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Proper Tire Pressure on Kenda Karrier ST 225/75 R15 Load Range E Tire

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