18 or 19 inch wheels for 997GT3 track day tires?
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Joined: Sep 2005
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From: So Cal
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Originally Posted by eclou
the 305/30/18 is also 25.6" in diameter, it is not listed b/c it is only sold as the VRL (Viper Racing League) tire.
24.8/25.6 = .968 ratio front to rear
25.5/26.3 = .969 ratio front to rear
As you can see, the difference is about 0.1%. All electronics nannies work great. I have run 3 track weekends like this, no warning lights, no squirrely behavior whatsoever.
24.8/25.6 = .968 ratio front to rear
25.5/26.3 = .969 ratio front to rear
As you can see, the difference is about 0.1%. All electronics nannies work great. I have run 3 track weekends like this, no warning lights, no squirrely behavior whatsoever.
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Joined: Sep 2006
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From: Houston
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Didn't know that the V710's had come out in 305's. I am always leery of the Kumho's ever since the grooving of death and delamination with previous compounds.
For a heavier car, the Hoosiers may in fact get loose on a hot day. I have not run them yet on my TT in temps >50F but I'll find out soon enough. I know that GAC's have held up quite well for me in my 2600lbs 944 turbo in 110+F track temps, and understand the VRL is more durable than the GAC's.
For a heavier car, the Hoosiers may in fact get loose on a hot day. I have not run them yet on my TT in temps >50F but I'll find out soon enough. I know that GAC's have held up quite well for me in my 2600lbs 944 turbo in 110+F track temps, and understand the VRL is more durable than the GAC's.
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Joined: Jan 2004
Posts: 262
From: Toronto
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Originally Posted by mowblowgo
It has been my experience that shaved RA-1's are a faster/better choice than the VRL. VRL's are too soft, and very difficult to manage through a long heat cycle.
It's that good.
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