1999Porsche911

I run minimum camber, per specs, 44 psi and now get probably 13,000+ safe miles out of my rear tires (non track). Prior to reducing camber I would get 8,000 - 10,000 miles. Treadwear is more even now, but remains more on the inside half, which is what I expected. Front tires run at 36 psi and I get 25,000 - 30,000 miles out of them.

Dr_KarlB

I got about 5000 out of a rear set of Pirelli's.
I had the alignment checked and re-set and the rear toe was almost double the specs. The rears were scrubbing sideways twice as much as they should.... great even tire wear though :-)
With the new alignment and Bridgestone RE050 PP's i have 3k mileson them and loads of tread left... work good at the track too !

porsche-t

I'm running Pirelli's on mine and I'm up to 20K+ on the new set with even tread wear across the rear tires. (40psi)

1999Porsche911

If you have 20,000 on the rears and the tires are still within legal limits on tread, then your allignment is nowhere near within specs or never drive more than 40 mph. No problem running less camber than spec'd, but not as good at handing.

Dr_KarlB

Porsche-t
20k???? on one set !
Do you use the pedal on the right much ?

My car has only 18,000 miles and im on the fourth set of rears !!!

LVDell

is somebody embelishing a bit?

porsche-t

I have driven my car to California twice, one way from California and I do jaunts down 1604 at 120mph regularly. No Dell, I'm not embellishing. Car had 10K on it when I bought it and it is slighty over 30K now. I need tires now and it handles very well, and I do drive it using the pedal on the right.

LVDell

Where in God's name are you hitting 120+ on 1604?

Good for you though That might very well be a record here with 20K on a set of rears.

porsche-t

Between Judson and Redland Rd. Yeah, I couldn't believe it either. they are making road noise, but they look like they can make one more one way trip to Cali. BTW - I did get caught doing 80 in a 70 on 1604.

LVDell

Ah, now I know how you hit those speeds! I used to live out in Sonterra and remember the good ole days BEFORE the traffic. But from 10 all the way to 35, traffic now blows on the loop.

The B

I'm another one, in the dealer last month (20k service) I was advised that I need my first set of new rear tires in about a month...and yes...I drive it everywhere. I have no idea about my alignment, all seems to be fine.

porsche-t

Also Highway 90 going to Lackland (130+). I don't do jackrabbit starts so I guess that helps. And 1999Porsche, the dealer in California did the last alignment, so I guess they did it right ( and filled it with 0W40 Mobil 1 after it was done!)

hwk72

porsche-t, it sounds that you are on the original tires from '99 (check the manufacturing year on the tires). If you bought the car with 10k miles, then the previous owner might not have replaced the the tires at all. I had the same experience with 2 low millage older cars. After some years the rubber gets extremely hard. Have you ever driven your car on wet roads and wondered why you have no grip? I once owned a BMW Z3 2.8 and it had the original tires on it, a 5 year old car! On wet roads I was able to spin the car in almost every gear by just slighly pushing the trottle in turns. When I replaced the tires, the traction of the car changed completely.

porsche-t

No, not original tires. The car came with 18" Sport Designs and they were changed to Techarts and Pirellis just before I bought it.

Kevin H. in Atl..

I am getting ready to replace my PS Ribs.

Fronts have over 23k on them, rears over 16k, with the rears wearing most in the middle of the tire even though I ran 40psi for the most part in the rears.

Gonna go with a full set of N1 Pilot Sport Ribs.