Kevin Phillips

Received my Fister mufflers from FD Motorsports and put them on this weekend. They are awesome , but that's for another post...

When I pulled the rear wheels off, I was a little surprised at the wear on the inside of the tire. In fact, I'm glad I did the exhaust this weekend because the passenger tire is showing cords in a couple places. (sorry for crappy iPhone pic)

I was able to get two new rear tires ordered and ready to install Monday morning, but the question I have is do I need to look at having an alignment or the camber adjusted on the rear? If the camber is appropriate so the car performs better, then I'm okay, just need to be aware in the future that I need to get a better look at the inside of the tire to truly see where they are in overall wear.

Thanks in advance.

Macster

My info and experience is incorrect toe in is the blame for that kind of wear.

Both of my Porsches have the standard amount of rear negative camber and yet get good tire life. Over 20K miles for the rear tires before the last set in the case of my Turbo.

When you get new rear tires fitted, fill the gas tank full, empty the car of junk, be sure the tool kit and spare tire (if applicable) are installed and secured correctly and then get the car treated to a proper alignment.

Get before and after numbers along with a print out that shows graphically what the setting limits are and what the settings actually are.

sandwedge

That's exactly how the rears have worn on both my 997's. Every imaginable adjustment including alignments have been made and I'm still lucky to get 10K miles on the rears.

CAVU

Right rear on mine looks like that but no cord showing yet. I'm pretty sure it's called "cupping". 13,000 miles on the tires from the factory and 4 years old. Going with all new tires and have my non-dealer Porsche specialty shop do the alignment. Hoping it is all alignment. Anxious to see the before and after numbers.

NBTBRV8

That's how they wear. Both insides go with the left rear in RHD markets, and the right rear in LHD markets which is largely due to the camber in the road. By the look of your tread wear bars there is nothing unusual it is just that you have let it go a long way.

rotesAuto

is your car lowered too?

Hella-Buggin'

If you take corners more aggressively you'll find that the wear pattern will be more evenly dispersed. These cars have the camber required to keep the heavy back end from swinging around on you.

BigThistle

Although I do have PSS9 Bilstein coilovers, GT3 swaybars, GT3 ride height and corner balanced, I run at -1 front camber with .02 toe and -1.5 rear camber with .14 toe and get no discernible inner rear wear. 19" wheels on my 997 Carrera 3.6

And I don't brake much on corners, so maybe something to do with evenly dispersing tire wear, (great excuse and I'm sticking to it).

FYI also recently changed from my favorite Bridgestone RE050's to my new favorite Michelin Pilot Supersports.......can't get these unstuck and they are OUTSTANDING in wet weather.

Marshal_Mercer

+1

JustinCase

My thought exactly.

Kevin Phillips

Funny I have had a couple of guys tell me to drive it harder and the wear will be more even

Kevin Phillips

No it's not.

Kevin Phillips

Taking it to an independent shop North of Pittsburgh tomorrow to have the new tires done. Will get the numbers from them and post.

Kevin Phillips

Since I'm only doing the rears this time around I went with the RE050's again. I'm considering changing the next time I have to replace both. I use this as my daily driver (long commute) and take it out for track weekends so I'll put 15k miles on it by next summer and need a full set by then.

sjfehr

tsk tsk tsk If you don't have to brake for the corners, you're clearly not driving hard enough!

Different Porsche, but I've maxed out my camber and it still isn't enough; I wear out the outside of my tires well before the inside. Looks exactly the reverse of the tires in this thread.