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Section width is not the only consideration when upsizing tires. You need to consider overall diameter too. A taller than stock tire will mean loss of gearing. My Toyo R888 315/30/20 race tires are almost 1" shorter than my street Nitto NT05 315/35/20 and I can feel the gearing advantage whenever I change over to them. In comparison, my buddy has a 91 ZR1 and he went from 315/35/17 to 335/35/17 and he said he could feel the car was much slower the first time he drove it.
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Vengeance Kaotik Cam, C.A.I., ARH LT, Pypes Cat Back, ZL1 Shifter+2012LS3VERT bushing, Quantum Brake Ducts, JDP Tow Hook Scorch Yellow Trim Kit, Shark Fin, AAC DRLs+ABLs+SMDs, ZTA Rear Spoiler, R.Y. 1LE Splitter. Pfadt coilovers, camber plates, trailing arms, Pegasus Solid Subframe. Pedders ZL1 barz, radius arm & steering rack bushings. BMR adjustable toe-rods. Hotchkis Max Chassis Brace. ZL1 GMPP Driveline Upgrade. TurnOne P/S pump. CTS-V 6 pistons.
447 HP @ 6180 RPM / 418 TQ @ 5100 RPM
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