Z51 alignment track
Thread Starter
Instructor
Joined: Jun 2014
Posts: 206
Likes: 15
From: Malvern, PA
Z51 alignment track
Does anyone has suggestions for track alignment with Hoosiers on a C7 Z51. I basically run 275 / 295 A7’s and 295 / 315 a7’s. On 2 different sets of rims. First 0ne 8.5 and 10 inch wide the other 10.5 and 11 inch wide. All 18 inch wheels. I run the recommended track alignment that GM recommends but after 10-12 sessions HPDE of 20-25 minutes the outside cords mostly the front but sometimes also the rear.
Drifting
Joined: Jan 2005
Posts: 1,441
Likes: 557
Hoosiers like to be -2.8 to -3.0 camber. GM track alignment specs are for stock tires. The Hoosiers create enough grip to keep rolling the tire over in a corner. I found the stock bushings have to much flex with Hoosiers, even with my alignment at -2.8. I am now on LG Monoball bushings and a locking camber kit.
Also, get your alignment rechecked if you run slicks without some kind of camber locking kit. I was pushing my alignment way out of wack in a single track day from the grip generated with my R7’s.
Also, get your alignment rechecked if you run slicks without some kind of camber locking kit. I was pushing my alignment way out of wack in a single track day from the grip generated with my R7’s.
Le Mans Master
Joined: Oct 2011
Posts: 7,079
Likes: 1,922
From: DFW, Tejas!
Hoosiers like to be -2.8 to -3.0 camber. GM track alignment specs are for stock tires. The Hoosiers create enough grip to keep rolling the tire over in a corner. I found the stock bushings have to much flex with Hoosiers, even with my alignment at -2.8. I am now on LG Monoball bushings and a locking camber kit.
Also, get your alignment rechecked if you run slicks without some kind of camber locking kit. I was pushing my alignment way out of wack in a single track day from the grip generated with my R7’s.
Also, get your alignment rechecked if you run slicks without some kind of camber locking kit. I was pushing my alignment way out of wack in a single track day from the grip generated with my R7’s.
Drifting
Joined: Jan 2005
Posts: 1,441
Likes: 557
Drifting
Joined: Jan 2005
Posts: 1,441
Likes: 557
More than acceptable for the level of added driving feel and control. The car just goes exactley where you tell it! Mid corner adjustments feel more like I’m in a 250 shifter cart! It just tracks and changes direction beautifully! I do feel a pretty big difference on the street. Some roads are pretty horrible even in tour. Tour now feels like sport did and I can actually take a corner hard in tour now. Sport is pretty stiff, around stock bushings in track mode before, but still more compliant. Sport feels just amazing. Track mode now feels like a race car. I just did two days of autocross. The car slides very smooth and predictably. Much tighter than stock. I was drifting with one hand. I’m in love with the bushings and feel the sacrifice in road comfort is well worth it. But I’ve always been into extreme vehicles. I spent 4 years rain or shine, commuting Bay Area roads, on a ZX10R. 
Noise, harsher for sure. I’d say a 20% in all around noise harshess increase. I mostley drive in tour now. But can still drive in sport with no issues. Track is for the track now. I used to drive track all the time on the street.
Noise, harsher for sure. I’d say a 20% in all around noise harshess increase. I mostley drive in tour now. But can still drive in sport with no issues. Track is for the track now. I used to drive track all the time on the street.
Last edited by rb185afm; Apr 16, 2018 at 01:39 PM.
