2007 S4...Tracked a lot. What size rim/tire would work the best?
Tech Guru
Joined: Mar 2003
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Bigger is rarely better
I cant say for your specific car. But I do find that the rally serious racers among other marques, specifically Porsche, run smaller wheels and tires. Big, R-compound tires.
Big wheels are needed - mostly to clear brakes.
But they are also heavy - unsprung, spinning mass heavy. So bigger really isn't always better.
So my opinion is to run stock - or stock diameter but even wider. With any of the really good r-compound tires. Victoracers. Pilot Cups. v700s. Hoosiers. etc. etc.
Keep in mind that grip is nto free. Grip is pretty much inversely proportional to treadwear. Most r-compounds are 60-100. Ouch.
I run stock on my 986.
Grant
Big wheels are needed - mostly to clear brakes.
But they are also heavy - unsprung, spinning mass heavy. So bigger really isn't always better.
So my opinion is to run stock - or stock diameter but even wider. With any of the really good r-compound tires. Victoracers. Pilot Cups. v700s. Hoosiers. etc. etc.
Keep in mind that grip is nto free. Grip is pretty much inversely proportional to treadwear. Most r-compounds are 60-100. Ouch.
I run stock on my 986.
Grant
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Audiworld Junior Member
Joined: Jul 2004
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From: Sacramento
Thanks for the info...I plan to keep the 18" wheels but am debating if I should go
R compound. 80% of my driving is to and from the track or on track.
Tires I am considering are GY Eagle F1, Advan 048, Mich Sport Cup.
Tires I am considering are GY Eagle F1, Advan 048, Mich Sport Cup.
Tech Guru
Joined: Mar 2003
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It depends on how experienced you are; how much you want to spend, and hwo much you care about times
Most people I talk to say do your learning on regular tires and your competing on r-compound. They stick better, but wear faster, and get you into trouble at higher speeds and g-forces.
So, I have track tires. But guess what? They're just a 2nd set of good street tires ( Pirelli p-zeros) on 17" rims. They exceed my abilities.
Grant
So, I have track tires. But guess what? They're just a 2nd set of good street tires ( Pirelli p-zeros) on 17" rims. They exceed my abilities.
Grant
AudiWorld Member
Joined: Aug 2008
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I did several track events on F1 GSD3. Held up well.
This was with my Mk IV Jetta, though, so not entirely apples-to-apples. Still a heavy car.
I've got Falken Azenis RT-615 on the S4 now. They are <i>unbelievably</i> grippy. I haven't been this excited about a tire in years. I'll have them out on track for the first time next month at Thunderhill.
I've got Falken Azenis RT-615 on the S4 now. They are <i>unbelievably</i> grippy. I haven't been this excited about a tire in years. I'll have them out on track for the first time next month at Thunderhill.
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