R888 Rear tire wear on 996/911 - Page 2

onefastviking · 10-27-2009, 11:51 AM

When you took tire temps where were they ?

Quote:

Originally Posted by trackjunky

I have two R888's that will fit the rear from my first purchase. I'm gonna throw these on with maybe .5 degrees less camber and see what happens.

You know, this may have been some of the reason my car was a little loose.....too much camber for the R888's. The fronts, BTW look perfect.

TRT41 · 10-27-2009, 08:13 PM

Quote:

Originally Posted by trackjunky

This may have already been covered, but I thought I'd throw this out there.

Just finished a track weekend and I saw similar wear patterns on the rear of mine and three other 996's and 911's. That is, the inside half of the rear wears out twice as fast as the outside half.

I run more camber than the other cars I saw, but the result is basically the same: bald to corded inside half of rear tires while outside half still has grooves left.

Anyone else seeing this with the R888's.

(BTW rear camber -2.6 toe -3mm's)

Bill - thanks for starting this thread. I can't find my alignment numbers and it will be next week before I get it to the shop to get them and then reset for less camber. I'll post ASAP.

AudiOn19s · 10-27-2009, 08:34 PM

I ran -2.7, then -2.4 in the rear of my 996 with R888's. I think -2.2 would have been about right. This is with a 900lb rear spring.

Andy

trackjunky · 10-27-2009, 11:04 PM

Quote:

Originally Posted by AudiOn19s

I ran -2.7, then -2.4 in the rear of my 996 with R888's. I think -2.2 would have been about right. This is with a 900lb rear spring.

Andy

Andy, I'm heading in the exact same direction. What are you doing with front camber?

lawjdc · 10-27-2009, 11:07 PM

you do know that you can swap the rears on R888's, side to side, to double the wear, right?

AudiOn19s · 10-28-2009, 09:40 AM

Quote:

Originally Posted by trackjunky

Andy, I'm heading in the exact same direction. What are you doing with front camber?

I was down to -2.7 front (from -3.1) and it was about right. I think I could have still backed off a bit but it wasn't far off. Sold the car so I suppose I'll never know.

Andy

997gt3north · 10-28-2009, 10:20 AM

- on my 997gt3 (305/30/19) -2.2 in the rear was about correct - guessing that -2.0 would have been perfect
- on the front (235/35/19) i was at -2.7 (my guess is that -2.3 would would have been perfect)

TRT41 · 11-11-2009, 11:14 AM

Bill- getting back on the R888 alignment issue, my before and after numbers. I am seeing even tire wear across front and rears, running 38/39 hot pressure. before/after numbers:
front/left front/ right rear/left rear/right
camber -2.27/ -2.37 -2.40/-2.33 -2.06/-1.58 -2.19/-1.53

The before numbers worked great for Nitto NT-01 225/275 front/rear and MPSC 225/295. 2002 996 C2, driven to an from track.

J richard · 11-11-2009, 08:13 PM

....looks like the spec series bailout is causing some ripples...$150 rebate on 205/15 888s...

10-27-2009, 08:34 PM	#18
AudiOn19s Addict Rennlist Member Join Date: Jun 2005 Location: Columbus OH Posts: 1,345	I ran -2.7, then -2.4 in the rear of my 996 with R888's. I think -2.2 would have been about right. This is with a 900lb rear spring. Andy __________________

10-27-2009, 11:07 PM	#20
lawjdc Addict Rennlist Member Join Date: Jul 2005 Posts: 1,015	you do know that you can swap the rears on R888's, side to side, to double the wear, right? __________________ 2007 GT3 Past Porsches: 1973 911T/S, 1984 Carrera Targa, 1987 Carrera Cabrio, 2005 Carrera S

11-11-2009, 11:14 AM	#23
TRT41 Addict Rennlist Member Join Date: Dec 2007 Location: Dallas, Texas Posts: 230	Bill- getting back on the R888 alignment issue, my before and after numbers. I am seeing even tire wear across front and rears, running 38/39 hot pressure. before/after numbers: front/left front/ right rear/left rear/right camber -2.27/ -2.37 -2.40/-2.33 -2.06/-1.58 -2.19/-1.53 The before numbers worked great for Nitto NT-01 225/275 front/rear and MPSC 225/295. 2002 996 C2, driven to an from track. __________________ 996 Black coupe-slower than it looks, now a 996 Spec build 996 White cab-faster than it looks That's some catch, that Catch-22. my black 2002 interior parts are for sale, check this link>> http://forums.rennlist.com/rennforum...ferrerid=59068

10-28-2009, 10:20 AM	#22
997gt3north User Join Date: Nov 2006 Posts: 963	- on my 997gt3 (305/30/19) -2.2 in the rear was about correct - guessing that -2.0 would have been perfect - on the front (235/35/19) i was at -2.7 (my guess is that -2.3 would would have been perfect)