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      03-25-2014, 11:17 AM   #13
0w40X1
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Drives: 2014 BMW X1 s28i M Sport
Join Date: Sep 2013
Location: West Texas

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Red Bread,

Maybe my article seemed a little fluffy to you, but I used to sell and adjust tires so I do know a little about tire failures.

Speed rated radiaL tires usually have soft sidewalls , but tougher belts.

Why do you think that some tires are rated to 168+ mph for tread separation?

I've had cheap tires that would separate when I tried to run 40 psi.

I also had a H rated 130mph tire go soft into a turn once at 100 mph because of bad tire stem. Stems fixed, tire reused for a few years and worn out.

There is a wide variation in tire quality, and wide variation in how people drive cars.

TPMS is a great safety device, and I wouldn't defeat it myself, but I track my cars and can feel something off with the tires or suspension.
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