Hoosier R6 size setup for C5 z06
02-21-2009, 05:08 PM
#1
Instructor
Thread Starter
Hoosier R6 size setup for C5 z06
Will I have clearance issues with 305s on 10 !/2"s all the way around with a stock ride height? I've posted this question once before and no one answered so please chime in I need to order tires asap. Thanks
02-21-2009, 06:55 PM
#2
Stock C5Z wheels will take 295/35/17 front 315/30/18 rear. Very fast setup 
Stock 10.5X18 rear wheels all the way around can run 315/30/18's. Or anything down to a 275. 305's will fit with lots of room to spare.
Stock 10.5X18 rear wheels all the way around can run 315/30/18's. Or anything down to a 275. 305's will fit with lots of room to spare.
Last edited by Z06Fix; 02-21-2009 at 06:57 PM.
02-21-2009, 08:23 PM
#4
Drifting
The only issue with the wider tires may be rubbing on front brake ducts at full lock. I run the 10.5x 18s all around. My front 285x30s rub the ducts so I don't use full lock if I can avoid it. Not really a problem. The rear 315s fit fine.
Dog
Dog
02-22-2009, 12:58 PM
#5
Instructor
Thread Starter
If I want to run the same sizes front and back in order to be able to rotate the tires for maximizing wear would 285s be the largest size or can I go bigger?
02-22-2009, 02:01 PM
#6
You can run up to a 315/30/18 on the 18x10.5 C5Z rear wheels. If you are worried about rubbing I would go with 305's all the way around.
02-22-2009, 02:39 PM
#8
02-22-2009, 02:57 PM
#9
Le Mans Master
02-22-2009, 05:07 PM
#10
Instructor
Thread Starter
No I dont use active handling on the racetrack. Getting airborne at Lime Rock and having the motor shutting off power on me taught me not to forget to shut the active handling off on the track. I dont want to run 17s all the way around. I have (4) 10.5s rear rims that I want to run a square set up with and I just wanted to know what is the largest tire I can run in the front without rubbing.
02-22-2009, 09:32 PM
#11
Instructor
Member Since: Jan 2008
Location: Ottawa Ontario
Posts: 181
Likes: 0
Received 0 Likes
on
0 Posts
Hoosier 315-30/18 all around on stock rear 18x10.5
I think this would work as other manufacturers recommend a minimum 10.5 rim width for 315 tires. Hoosier, however recommends 11 inch rims. Can anyone comment from their experience about A6 or R6 on Speedline 18x10.5 in all corners?
Would there be a loss of patch or loss of tire stability in corners of that tire on 10.5 " rim? Would this have any inpact on preferred operating tire pressures?
IMHO I think this would be ok for autocross but cannot back this up with my own experience.
Mike
Would there be a loss of patch or loss of tire stability in corners of that tire on 10.5 " rim? Would this have any inpact on preferred operating tire pressures?
IMHO I think this would be ok for autocross but cannot back this up with my own experience.
Mike
