I do not have the Trofeo R tires, but I do have Z/28 wheels with a 305/30/19 Hankook RS-3 tire on all 4 corners, (CTS-V brakes, Pedders Springs, Z/28 seat.....)
Fastest lap at Gingerman:
Stock 20"s and 285/35/20 Goodyear Supercar G2: 1:44.41 April 2014
Z/28 19s with the aforementioned RS3s 305/30/19: 1:44.01 Sept 12, 2014
I have 17+ years of racing and instructing experience there, 45K+ miles on the track.
The car does not feel as confidence inspiring at the limit with the 19s as it was so well balanced before. It feel as if I have hit the limit of the stock damper/Pedders spring suspension and it would benefit from stiffer springs.
Last edited by Dropspeed; 09-15-2014 at 01:30 PM.
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