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Originally Posted by hdflstf
I'm not too surprised by the wear on the inside of the front tires. This will be more prevalent on SSRs that are driven easy or mostly on the interstate.
Reason is the front alignment calls for about 1 degree negative camber which will cause that type of wear.. The only thing that masks it is to wear the outside edge of the tire by pushing it around the corners...
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Inside tire wear isn't a result of an improper alignment, but the fallout for an alignment optimized for handling vice tire wear.
To really discuss this issue, can someone with a service manual look up the actual alignment specs. As an example, here are the specs for my 2002 Corvette Z06:
Z06 Specs:
Front Individual Toe: +0.04 degree +/- 0.10 degree
Front Sum Toe: +0.08 degree +/- 0.20 degree
Front Individual Caster: +6.9 degree +/- 0.50 degree
Front Cross Caster: within +/- 0.25 degree
Front Individual Camber: -0.70 degree +/-0.50 degree
Front Cross Camber: within +/-0.25 degree
Rear Individual Toe: -0.01 degree +/- 0.10 degree
Rear Sum Toe: -0.02 degree +/- 0.20 degree
Rear Individual Camber: -0.68 degree +/- 0.50 degree
Rear Cross Camber: within +/- 0.50 degree
As can be seen from these specs, the nominal front camber of the Z06 is -0.7 but the tolerance is large, such that anything from -0.2 to -1.2 is "in spec". Vette owners desiring better tire wear at the cost of handling can skew the alignment but still be within factory specs. To minimize front inside edge wear for a daily driver, set the front camber to the least possible, e.g. -0.2 for the Vette, and front toe to zero.
