good autox tire setup
07-21-2009, 01:52 PM
#41
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The 225/15's aren't ideal, but I know that Jeremy Schuster ran 225/15's for years before the 275's came out and was always one of my region's fastest. Things have changed since that car competed at an auto-x though. If you plan on doing National Tours and being competitive, the 275/15's are what you'd need.
The 255/13's are just too short unless you start playing with the final drive IMHO. I've been lucky enough to drive an ASP Z06 this year and there have been a few brief moments were we've been tickling the upper range of 2nd (72-75 mph). With the general acceptance that an upshift is about .1s added to your time, have a slightly taller 2nd gear (or more revs) and the 275 is what is needed to keep up the RX7's and their 9k redline (around 73 mph on a 4.7 rear gear).
The 255/13's are just too short unless you start playing with the final drive IMHO. I've been lucky enough to drive an ASP Z06 this year and there have been a few brief moments were we've been tickling the upper range of 2nd (72-75 mph). With the general acceptance that an upshift is about .1s added to your time, have a slightly taller 2nd gear (or more revs) and the 275 is what is needed to keep up the RX7's and their 9k redline (around 73 mph on a 4.7 rear gear).
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07-21-2009, 02:07 PM
#42
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The 225/15's aren't ideal, but I know that Jeremy Schuster ran 225/15's for years before the 275's came out and was always one of my region's fastest. Things have changed since that car competed at an auto-x though. If you plan on doing National Tours and being competitive, the 275/15's are what you'd need.
The 255/13's are just too short unless you start playing with the final drive IMHO. I've been lucky enough to drive an ASP Z06 this year and there have been a few brief moments were we've been tickling the upper range of 2nd (72-75 mph). With the general acceptance that an upshift is about .1s added to your time, have a slightly taller 2nd gear (or more revs) and the 275 is what is needed to keep up the RX7's and their 9k redline (around 73 mph on a 4.7 rear gear).
The 255/13's are just too short unless you start playing with the final drive IMHO. I've been lucky enough to drive an ASP Z06 this year and there have been a few brief moments were we've been tickling the upper range of 2nd (72-75 mph). With the general acceptance that an upshift is about .1s added to your time, have a slightly taller 2nd gear (or more revs) and the 275 is what is needed to keep up the RX7's and their 9k redline (around 73 mph on a 4.7 rear gear).
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07-26-2009, 05:07 PM
#44
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So are there in definitive answers out there, possibly in way of charts or possibly someone with experience with a wide array of these choices?
There seems to be a pretty considerable list of tires to choose from in the ultimate AutoX Street tire category. ie: Azenis, Direzza, S03, XS, RS2, RS3, etc.
There seems to be a pretty considerable list of tires to choose from in the ultimate AutoX Street tire category. ie: Azenis, Direzza, S03, XS, RS2, RS3, etc.
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07-26-2009, 09:32 PM
#45
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I appreciate your help the other day after I ordered too, Emilio, thanks!
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08-07-2009, 08:31 PM
#47
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I've been gone all week in the "desert" of SoCal with no internet access, playing catchup on threads. Wheels and tires came in though, and the buyer of my Koseis was nice enough to have the wheels and tires combined so I just popped 'em on when I got home!
Pics to follow.
Pics to follow.
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08-19-2009, 10:02 PM
#58
Especially for a badass set.
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