ittlfly

Hey guys, I recently sold my 2012 grand sport dry sump and had nothing but problems with tire wear on the front end. (I actually got only 6000 miles on those Goodyears and had the car on the alignment rack three times in the 6000 miles.
Anyway, I have a friend looking to buy a 2011 grand sport with a wet sump engine. Did the earlier models have alignment problems also?
Thanks

96GS#007

By the design the GS has a more aggressive alignment that wears tires, particularly the front. If someone wants the tires to last longer they need to specify to the shop a much less aggressive alignment. In addition, the GM specs have a wide range which can also contribute.

Bottom line...there’s nothing wrong with the cars. The alignment is aggressive and tire wear is a byproduct.

xBoostx

'11 grand sport wet sump here no alignment problems though i had mine aligned due to installation of coil overs, for minimum rolling resistance.

mikeCsix

There isn't a tire wear issue on the car regardless if it is wet or dry sumped. As 96GS says, its an aggressive alignment that wears tires. If you take the car to an alignment shop and tell them to just align it, they will dial in the Corvette program from GM and move the wheels around until all is green and let it go at that. The tolerances are broad enough in that scenario you are almost guaranteed excessive tire wear. If on the other hand you specify tolerances, ie, using tolerances on the pfadt chart, and have the alignment set for minimum tire wear, your tire wear will at least triple. I got 18k on my GY OEM tires with a dozen track days and a fairly aggressive alignment. Incidentally, toe will wear tires faster than camber. If you are street only, just back off on the camber and set toe to 0, just don't track the car or you'll be disappointed.

RicK T

Exactly!

ittlfly

Thanks guys for the input..