14" whitewall tires

I've never heard of all but two of those....
 
[h=1]The Uniform Tire Quality Grading System (UTQG)[/h]To help consumers evaluate their tires, the U.S. National Highway Traffic Safety Administration (NHTSA) created the Uniform Tire Quality Grading System (UTQG) . The UTQG rates tires are rated on their treadwear, traction performance, and temperature resistance. The grade for each of these can be found on the sidewall of your tire (except winter tires and certain light truck tires).
[h=4]Treadwear[/h]The UTQG treadwear grade indicates how long your tire tread will last in relation to other tires. For instance, a tire with a grade of 400 will last twice as long as a tire with a grade of 200, according to how it performed in the treadwear test.
Note: Actual tire performance can differ greatly for many reasons, including driving style, climate, tire inflation and vehicle weight.
[h=4]Traction[/h]The UTQG traction grade rates the ability of your tire to stop on wet pavement.
Traction performance is given one of the following grades, which you will find on the sidewall of your tire:
AA, A, B, C.
Tires with an AA grade stop faster on wet pavement than those with a C grade.

CAUTION: The UTQG traction tests do not test tires for cornering, acceleration, driving at high speed or driving on dry roads. Tires are tested with straight ahead braking only.
[h=4]Temperature[/h]The UTQG temperature grade indicates the ability of your tire to dissipate the heat generated by driving.
Over time, heat can cause damage to your tires.
Temperature resistance is given one of the following grades, which you will find on the sidewall of your tire:
A, B, C.
All tires sold in the United States must have at least a C rating.

CAUTION: The tires in UTQG tests were inflated properly and the vehicles were not overloaded. Excessive heat can be produced by under-inflation of your tires, driving at high speed, driving an overloaded vehicle, and certain road and weather conditions.
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Since Special Trailer (ST) tires are constructed with more and heavier materials, they are tougher and more bruise resistant than typical passenger tires. This is a
plus because trailer suspension systems are generally stiffer and less
sophisticated than automotive suspension systems. A tire designed to operate in
the more demanding trailer environment will provide end users a longer service
life and withstand the added abuse tires on a trailer experience.
So, if ride be damned, it is a better tire.
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BTW, while surfin, I came across another person too stupid to breath.
Here's what happens when you don't match the wheel to the tire....

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That's probably an 8" wheel with a 175 tire. HowTF they got the bead to seat is beyond me.
I've seen this before. Dangerous as all hell.
 
A longer service life is relative to using passenger car tires on a trailer. ST tires on average make it 10k miles before they are toast, if you are towing a 7000lb capacity tandem axle car trailer. They are good safe tires, but they wear out much more quickly than a passenger car tire. I have used three sets in towing about 20k miles. (205/75-15)I have consider buying LT truck tires the next time, but they are difficult to find in a 15' rim and five Inches wide.
 
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