New DE-Prepped 911 Carrera Owner
11-29-2010, 06:09 PM
#46
Rennlist Member
I have less camber than you for the moment. (-1.2 Front -1.5 rear). The guy who did the aligment and corner balancing were not familliar with old porsche. He used to work on 993. He did his best. The tech tell me he cant add more negative camber with this height. But from what i can see during this summer, i need more negative camber for sure.If you can tell me your ride height it wil help me, i need a new alignment and corner balancing before i put my car in storage. Thank you for sharing this information.
If you're handy, you may try to align yourself. I did mine when I rebuilt my rear suspension, and was pretty happy with it for 2 or 3 years. Strings, jackstands and some straightedges are all that is needed, although a Camber guage makes it easier. People here have used digital levels too for Camber.
12-02-2010, 12:25 PM
#47
Pro
Thread Starter
Hi, Ed. I'm interested in running slightly wider wheels for my 225/45-17 fronts and 255/40-17rear tires. Perhaps 8.5 or 9s wide fronts and 9.5 or 10 wide rears? I want to stay with 17 diameters. I posted this question on an existing thread here https://rennlist.com/forums/911-foru...-wheels-2.html Any ideas on wheel choices?
12-02-2010, 04:14 PM
#48
Rennlist Member
Hi, Ed. I'm interested in running slightly wider wheels for my 225/45-17 fronts and 255/40-17rear tires. Perhaps 8.5 or 9s wide fronts and 9.5 or 10 wide rears? I want to stay with 17 diameters. I posted this question on an existing thread here https://rennlist.com/forums/911-foru...-wheels-2.html Any ideas on wheel choices?
You could go wider in the rear, but you may have oil lime issues. Again, I don't know why you'd want to run 255's on anything wider than 9's. This is what I ran for 3 years and it was perfect. If you go to the trouble of going to wider rear wheels, then go to 265 or 275 rubber. But I think such an effort has diminishing returns. You'll be looking at custom wheels from Zuffenhaus, Kodiak or CCW for all of the above.
12-02-2010, 05:01 PM
#49
Race Car
Lack of negative camber is a limiting factor on T-bar cars. I understand that bias ply track tires like less camber so...you never know what the previous guy was trying to do.
You gotta love when the BMW guys come over here. Nothing against them really(I've had a few and loved them) but the 911 slowly draws you in...some people just go mad, Like Ed.
You gotta love when the BMW guys come over here. Nothing against them really(I've had a few and loved them) but the 911 slowly draws you in...some people just go mad, Like Ed.
12-02-2010, 05:19 PM
#50
Pro
Thread Starter
Lack of negative camber is a limiting factor on T-bar cars. I understand that bias ply track tires like less camber so...you never know what the previous guy was trying to do.
You gotta love when the BMW guys come over here. Nothing against them really(I've had a few and loved them) but the 911 slowly draws you in...some people just go mad, Like Ed.
You gotta love when the BMW guys come over here. Nothing against them really(I've had a few and loved them) but the 911 slowly draws you in...some people just go mad, Like Ed.
Don't. It will be nothing but problems. I had 8's in the front for a couple of years, and did get rubbing inside the fender well. I have 7 1/2's now, and only get interference at full lock. 225's hit the sweet spot with 7.5's, IMO.
You could go wider in the rear, but you may have oil lime issues. Again, I don't know why you'd want to run 255's on anything wider than 9's. This is what I ran for 3 years and it was perfect. If you go to the trouble of going to wider rear wheels, then go to 265 or 275 rubber. But I think such an effort has diminishing returns. You'll be looking at custom wheels from Zuffenhaus, Kodiak or CCW for all of the above.
You could go wider in the rear, but you may have oil lime issues. Again, I don't know why you'd want to run 255's on anything wider than 9's. This is what I ran for 3 years and it was perfect. If you go to the trouble of going to wider rear wheels, then go to 265 or 275 rubber. But I think such an effort has diminishing returns. You'll be looking at custom wheels from Zuffenhaus, Kodiak or CCW for all of the above.
Last edited by SleepRM3; 12-02-2010 at 09:31 PM.
12-02-2010, 05:54 PM
#51
Drifting
I had 235's and 275's on my 17" zuffenhaus rims on my old Carerra. They were more than tight but at the track they were sticky goodness.
Shaved eccentric bolts, tucked in oil lines - messaged fender lips. It was work.
Shaved eccentric bolts, tucked in oil lines - messaged fender lips. It was work.
12-02-2010, 06:54 PM
#52
Pro
Thread Starter
Yes--I'm starting to see now. I was interested in going 1/2-inch wider to give more support for the tires, but I think 8s with 225/45-17 front and 9s with 255/40-17s rear will be just fine.
Last edited by SleepRM3; 12-02-2010 at 09:31 PM.
12-02-2010, 06:56 PM
#53
Rennlist Member
What does more than a 225/245 get you? The POC guys (Follmer and Vial specifically who were the initial guys to build 3 piece wheels from 6X16 Fuchs centers) tested all this pretty exhaustively. They even found that a 205 front at Willow Springs was quicker as there was less drag down that oh-so-important front straight.
For current "think" look to our PRC Spec 911 class. I think Van Overbeck did about 1:51 flat at Sears in his dad's car (which is a regular race winner with his dad driving anyway) on the series specified 225/245 RA1s. Best of the 996 Cups was ~1:45, and a guy like Mooty with his not-really-optimized-but-still-a-race-car 996 GT3 was at a best of 1:48 On Hoosiers.
There's a lot in the car to optimize, there's not much sense in reinventing the wheel (or tire).
For current "think" look to our PRC Spec 911 class. I think Van Overbeck did about 1:51 flat at Sears in his dad's car (which is a regular race winner with his dad driving anyway) on the series specified 225/245 RA1s. Best of the 996 Cups was ~1:45, and a guy like Mooty with his not-really-optimized-but-still-a-race-car 996 GT3 was at a best of 1:48 On Hoosiers.
There's a lot in the car to optimize, there's not much sense in reinventing the wheel (or tire).
12-02-2010, 09:30 PM
#54
Pro
Thread Starter
Thanks, Ken. More money for the DE budget! I'll leave the car alone, and just get in and drive!
What does more than a 225/245 get you? The POC guys (Follmer and Vial specifically who were the initial guys to build 3 piece wheels from 6X16 Fuchs centers) tested all this pretty exhaustively. They even found that a 205 front at Willow Springs was quicker as there was less drag down that oh-so-important front straight.
For current "think" look to our PRC Spec 911 class. I think Van Overbeck did about 1:51 flat at Sears in his dad's car (which is a regular race winner with his dad driving anyway) on the series specified 225/245 RA1s. Best of the 996 Cups was ~1:45, and a guy like Mooty with his not-really-optimized-but-still-a-race-car 996 GT3 was at a best of 1:48 On Hoosiers.
There's a lot in the car to optimize, there's not much sense in reinventing the wheel (or tire).
For current "think" look to our PRC Spec 911 class. I think Van Overbeck did about 1:51 flat at Sears in his dad's car (which is a regular race winner with his dad driving anyway) on the series specified 225/245 RA1s. Best of the 996 Cups was ~1:45, and a guy like Mooty with his not-really-optimized-but-still-a-race-car 996 GT3 was at a best of 1:48 On Hoosiers.
There's a lot in the car to optimize, there's not much sense in reinventing the wheel (or tire).
