the factory tires on my truck were 255.wish that i still had them to compare to the tires and wheels that i have now but it was a big improvment putting the gryphon with the custom tunes in. best mod that i have ever done. it is pretty hilly and curve where i live to.
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gryphon programmer with custom 87 tow & 87 performance tunes. MBRP 3.5" exhaust. volant cold air intake. 305 55 20 nitto trail grappler on 20X9 MAMBA M3 wheels
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