little tire help please?
Thread Starter
Racer
Joined: Jun 2005
Posts: 341
Likes: 1
From: Akron Ohio
little tire help please?
I am looking at TomZ's special on vredisten tires 275/40-17 and 295/35-18 for my 01 coupe, I am also putting on C5 Z06 wheels at the same time, will this combo throw off the speedo, how much? Also is there enough of a height difference to keep the ABS happy. Any other problems I haven’t thought of?
Le Mans Master
Joined: Nov 2005
Posts: 5,451
Likes: 2
From: East Peoria Illinois
I am looking at TomZ's special on vredisten tires 275/40-17 and 295/35-18 for my 01 coupe, I am also putting on C5 Z06 wheels at the same time, will this combo throw off the speedo, how much? Also is there enough of a height difference to keep the ABS happy. Any other problems I haven’t thought of?
Team Owner
Joined: May 1999
Posts: 22,830
Likes: 13
From: Columbus Ohio
CI 3-4, 8-9-10 Veteran
St. Jude Donor '06-'08-'10
I am looking at TomZ's special on vredisten tires 275/40-17 and 295/35-18 for my 01 coupe, I am also putting on C5 Z06 wheels at the same time, will this combo throw off the speedo, how much? Also is there enough of a height difference to keep the ABS happy. Any other problems I haven’t thought of?
Last edited by Blue 92; Apr 9, 2008 at 07:42 PM.
Thread Starter
Racer
Joined: Jun 2005
Posts: 341
Likes: 1
From: Akron Ohio
Thread Starter
Racer
Joined: Jun 2005
Posts: 341
Likes: 1
From: Akron Ohio
OK one last question before I place my order, so with the 275/40's up front and the 295/35s in the back there is only about half an inch difference F-R so my car will see the back tire going faster than it should be in comparison to the front, 
so when I break traction my traction control will kick on sooner.....Right? Also both front and rear tire diameter are being changed, how will this not affect my speedo?...I lied, that is two questions.
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
In theory the T/C will kick in earlier... In practice you won't notice the fraction of a second it takes to spin the ~ 1 inch difference...
The stock tires rotate 780 times per mile
The new ones 797
If my math is correct... You will be going about 2% slower than your speed says...
The stock tires rotate 780 times per mile
The new ones 797
If my math is correct... You will be going about 2% slower than your speed says...
Team Owner
Joined: May 2005
Posts: 23,682
Likes: 9
From: Flagstaff Az.
I am looking at TomZ's special on vredisten tires 275/40-17 and 295/35-18 for my 01 coupe, I am also putting on C5 Z06 wheels at the same time, will this combo throw off the speedo, how much? Also is there enough of a height difference to keep the ABS happy. Any other problems I haven’t thought of?
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Drifting
Joined: Jul 2006
Posts: 1,490
Likes: 257
From: Lake Tapps WA.
275-40 is too tall looking IMO especially compared to the short 35 sidewalls on back. I had 295-35's but changed to 255- 40 front and 285-40 rear. It fills in the wheel openings much nicer. (Also changed to 9.5x18 front and 10.5x18 rear) The diferential in size front to rear was almost exactly what the stock size was and we just changed the computer settings to correct the speedo.
