What Does LRC Mean on ST205/75R15 Trailer Tire

Question

Question:

What does the following tire designate in terms of load rating: ST205/75R15 LRC 5

asked by: Pat D

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Expert Reply:

Your ST205/75R15 trailer tire features a Load Range C which, according to the tires we have available in this size such as the Provider # TTWTRTM2057515C, gives it a maximum load of 1,820 pounds at 50 psi. If you can tell me what specific brand tire you have I will be happy to verify this for you.

I have attached a few additional articles on trailer tires that you might also find helpful.

expert reply by: Chris R

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Answer 1

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 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 like…

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Answer 3

Even when stored in the somewhat controlled environment of a garage, tires are still subject to dry rot and flat spotting. Even if the tire tread has plenty of depth left and you can't see any cracking with the naked eye, the generally accepted…

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Answer 4

For a tandem axle trailer rated for 7000 lbs, you can use either a Load Range C or D tire. Each axle will be rated for 3500 lbs so you need a tire that will carry 1/2 that capacity. That would make your minimum load range before limiting your system…

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Answer 5

Yes, you can mount a ST205/75D15 Bias Trailer Tire #AM1ST92 on a wheel that had a ST205/75R15 Radial Trailer Tire #LHWL300 as long as the wheel matches the required width for that tire. Generally all the 205/75-15 tires will fit a 5"-6"…

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Answer 6

The actual lifespan of a trailer tire will vary greatly depending on a number of factors (mileage, road conditions, weight of trailer, etc) but you are correct that radial ply tires should have a longer lifespan than bias alternatives. This is…

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Answer 7

The Optronics light that you referenced, part #ST70RB, is an exact replacement for Bargman light #40-06-001. If you can find that part number on your Bargman light, then we can be sure that this light is the correct replacement. Even if your Bargman…

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Answer 8

There is an LED version of the #ST70RB with the part #STL70RB.

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Answer 9

The 15" term is in reference to the size wheel that the Provider ST225/75R15 Radial Tire is mounted to. This particular part #A225R6FPS is a tire and wheel combo. The wheel has a 6 on 5-1/2 bolt pattern which is important to know so that your…

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Answer 10

You will need to measure the diameter of the spindles where the seal and bearings ride. Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. To pick out the…

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Answer 11

I attached a chart that has all of the recommended lug nut torque specs for trailer wheels. Based on your studs being 1/2 inch, your wheels being 15 inches in diameter, and your lug nuts being coned you would want to torque your lug nuts to 90-120 ft…

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Answer 12

The B78-13 tires you mention convert to metric size 175/80-13. The 175/80-13 tires are available in three load ratings. B: 1100 lb at 35 psi C: 1360 lb at 50 psi D: 1610 lb at 65 psi You would choose the load rating based on the capacity of your…

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What Does LRC Mean on ST205/75R15 Trailer Tire

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