Quote:
Originally Posted by brt3
I think the better way to handle this issue, for a street-driven Z/28, is to keep the stock wheels and install Yokohama AD08-R tires. Tread noise and tracking issues are solved, and I'm convinced this is one of the best choices in high-performance street tires for the Z/28. I have these Yokos installed on my OEM wheels, for street use, and have the OEM tires mounted to a set of Finspeed wheels, for track days...
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The Yokohama AD08R is a great tire that I had on my last Porsche, but I think my solution will be better for street driving for the following reasons:
Michelin PSS in 285/35R20 will be less expensive than Yoko AD08R and last twice as long while performing similarly (in addition to offering a 35,000 mile treadwear rating when same size used all around).
The 2"added tire diameter will increase the ground clearance about 1" for easier bump and driveway splitter clearance, and will decrease the tire to fender gap. It will however reduce speedometer accuracy by 6%.
The 35 series tire will add comfort over the 30 series tire for road imperfections and bumps.
A square setup permits tire rotation to further prolong tire life.
The front wheel will tuck slightly which will aesthetically improve the look IMO.
Trofeos on the forged stockers are the way to go on the track