another tire question (real quick)
Thread Starter
Racer
Joined: Jan 2005
Posts: 395
Likes: 0
another tire question (real quick)
Car going into the shop on Friday and the dealer is out of PS in 285 sizes. (Told me all Porsche dealers are) and to go to Tirerack or similar. I found 285/35/18 and would like to replace my 265's in the back. Dealer said would work just fine and go for it. What do you think? Trying to order them tonight....
Nordschleife Master
Joined: Oct 2003
Posts: 5,225
Likes: 32
From: Tobacco Road, NC
9.5? What rim is it? Haven't heard of any of the rims being 9.5". The side of your rim should be stamped with the offset and rim size next to the valve. You might want to check it.
FYI....the correct size tire (Porsche rec'd) for the rear is either 265/35/18 or 286/30/18 (not 35).
FYI....the correct size tire (Porsche rec'd) for the rear is either 265/35/18 or 286/30/18 (not 35).
Racer
Joined: Feb 2005
Posts: 471
Likes: 0
From: Redmond,WA
Don't do it !!
I put TOYO T-1S 285/35-18 on ththe rear, thinking that a .5" overall increase in diameter would not be that bad. WRONG. On top of the car looking like a dragster ( taller sidewall) the rear end was realy squirmy. I would do some tight S-turns and the rear end would be slow to catch up with the rest of the car. I even tried the tires at 51 psi, better but not good. The car was scary above 70 mph, do tthe rear not feeling planted. Dealer took the tires back and I have SO 2's on now; night and day difference. Just my account, PS tire may have a much stiffer sidewall, but the overall diameter is still increasing.
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Thread Starter
Racer
Joined: Jan 2005
Posts: 395
Likes: 0
Originally Posted by LVDell
9.5? What rim is it? Haven't heard of any of the rims being 9.5". The side of your rim should be stamped with the offset and rim size next to the valve. You might want to check it.
FYI....the correct size tire (Porsche rec'd) for the rear is either 265/35/18 or 286/30/18 (not 35).
FYI....the correct size tire (Porsche rec'd) for the rear is either 265/35/18 or 286/30/18 (not 35).
I have 265/35 on the back now.... i will inquire regarding the 285/30 tire..
I am only in need of replacing the rears, as the fronts are still in good shape. I would of liked to try bridgestone or toya but no need for 4 at the moment...
Thread Starter
Racer
Joined: Jan 2005
Posts: 395
Likes: 0
Originally Posted by LVDell
Is it a Genuiine Porsche rim or aftermarket? Did you check the stamp on the wheel to verify?
Race Car
Joined: Aug 2004
Posts: 4,072
Likes: 244
From: SF, CA
On my old '99 I went from 265/35 to 285/30 with no problems at all (the factory did the same thing I think in '02). The 265's always looked too small, like they were stretched to fit. A side benefit is that it'll now look like the front as far as how the tire sticks out a little from the rim and give you some protection against curb rash.
Burning Brakes
Joined: Jan 2005
Posts: 913
Likes: 3
From: Albuquerque, NM
Originally Posted by c4bliss
The reason i say 9.5, is the previous owner had demolished the two right rims in a pot hole. Replacement rims were shown on the repair receipt as 18x9.5.
I have 265/35 on the back now.... i will inquire regarding the 285/30 tire..
I am only in need of replacing the rears, as the fronts are still in good shape. I would of liked to try bridgestone or toya but no need for 4 at the moment...
I have 265/35 on the back now.... i will inquire regarding the 285/30 tire..
I am only in need of replacing the rears, as the fronts are still in good shape. I would of liked to try bridgestone or toya but no need for 4 at the moment...
Thread Starter
Racer
Joined: Jan 2005
Posts: 395
Likes: 0
Originally Posted by mundman
I don't think it is recommended to mismatch tire especially on a C4. What is on the front?
But I just cant decide if just the rears or all four with SO2's. Trouble is, much of it is on back order for the ps...