Suspension help
Thread Starter
3rd Gear
Joined: Jun 2018
Posts: 3
Likes: 0
From: Seabeck, WA
Suspension help
I went bigger on my rear tires. Previously had 285/30/20" on Cray wheels. I went to 305/30/20 on the same wheels. Car was sitting like a hot had with a two inch difference in bed pan height with severe oversteer. So I lowered the rear on the stock bolts. Now bed pan ride height is the same 5" from front to back. Now it feels loose upfront and a little bit of oversteer. I guess my question is should the front ride a bit lower than the rear? I think my front end is lifting at higher speeds.
Team Owner
Joined: May 2001
Posts: 87,302
Likes: 1,583
From: Western NY
The C-5 chassis was designed to be set up with the rear of the car approximately 1/4" higher than the front. This keeps the hood pointed "downward", and the air passing over it, pushing the car down. What you're experiencing is "aero lift".
Instructor
Joined: May 2010
Posts: 243
Likes: 53
From: Draper UT
^Yes. I’ve been told 1/4-1/2” rake is optimal. Don’t forget, your tire pressure can also play a big role in handling dynamics.
Thread Starter
3rd Gear
Joined: Jun 2018
Posts: 3
Likes: 0
From: Seabeck, WA
Thats what I was thought, wasn't sure if it was suppose to 0 for rake or what, Because before the new tires it handle perfect. Now its a little scary. I'll go drop the front a 1/4" and test it. Thanks for the info.
