I think usually to keep all the tires spinning at the same rate you need a larger sidewall in the front if the fronts are not as wide as the rears. The wider you go, the lower the profile if you want everything to be within spec. Otherwise, you'd get those instances were the speedo isn't accurate anymore because you went too far out of spec. At least that's what I think lol
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SOLD 12/30/2011 2010 370Z Coupe Monterey Blue 6MT/Touring/Sport/Nav
F.I. CBE CF w/ 12" Res | V1 | SecondSkin | Stillen G3 | EVO-R CF B-Pillars | Volk GT-S Ti Gunmetal 19x9.5 +30 F, 19x10.5 +8 R | Swift Spec-R Springs
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