i have a 2009 997 turbo and just reached 12000 miles. im swapping all four tires tomorrow and was concerned because my rears wore quickly on the inside of the tire opposed to the outside of the tire. i know this is due to the car coming from the factory with negative camber. is there a way to have my tires wear more evenly so i can get some more life out of tires? or would you guys just keep it how it is and not mess around.

 

A vendor recently posted a thread regarding this topic. I intend on having them installed soon as my car is lowered also.

https://www.6speedonline.com/forums/...996-997-a.html

Ken

 

Yes, you need a set of dogbones...gmg.

 

How much extra mileage would you have got out of the tires if they didn't wear on the inside? Were the outsides / middle that fresh?

It would have to be a lot to make it worth reducing the camber. I haven't touched the Porsche yet but I can't get enough camber on the M3

 

Negative camber is there to improve cornering force. During cornering, negative camber allows tire to be more perpendicular to road, maintaining better adhesion. Assuming your car is stock, you do not need any after- market control arms to reduce camber! (Even my car at 10mm lowered does NOT need after-market arm to reduce camber.)

I would:
1. First check your alignment.
2. If alignment shows camber being excessively negative, then reduce it. Problem solved.
3. If alignment is within specs, then although you could reduce the negative camber, my vote is to do nothing. I actually think it's safer that way (appropriate negative camber = better adhesion at high cornering speed, even if tire wear may be worse).

Suspension tuning is a game of give and take; nothing comes free. Better tire wear means reducing rear cornering force at higher speed, a situation that might be dangerous and I don't know why anyone would recommend you to do that. In the Turbo, the specs for rear camber is -1.4 to -1.9. I would not go less than -1.4.

One thing to remember about after-market control arms with heim joints. such as the upper control arms advertised above, is that they are not necessarily a good thing for road use, and even for mixed road/track use. Over the long run, they might/will become more loose because of their un-yielding nature, being all metallic (all joints have wear and tear, but metallic gets worse faster). For the track, they are great; for streets, with inherent imperfect surfaces, not necessarily. YMMV.