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130fe

05-20-2006 12:54 PM

allowable tire size differance with GM posi

I am wondering if anyone know what the allowable tire diameter differance is. I have 275/40/17 (25.66 in) on mine and am wanting to use a either a C5/4 spare with a 25.54 (C4) or 24.99 (New GTO). Any help would be appreciated.

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