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Ok, I have Hankook 305/30/19's mounted on Cray Spiders on rear of my '02 Z06. The shop just called me and said they did the lowering with a kit and then an alignment and the closest they can get my rears in spec is -2 degrees. They are telling me -.6 is spec and I will have a little inner wheel wear but if they put it in spec there is rubbing on the inner part of the wheel? Anyone experience this? Actually, my question may be what is the correct way to lower your car?? Here is the difference:
By raising up the rear end you will decrease the camber. That being said, I know of a few autocrossers who run -1.2 camber in the rear and 1/16 toe in per side and -1.5 to -1.8 camber in front with 0 toe. (Some like less front camber for tire wear) since they only drive on the road about 2-3,000 miles per year they experience no noticeable tire wear. I once drove 720 mile to a track and then returned with the 1.8F/1.0 rear set up and using a digital tread depth gauge had very minor uneven wear.
Finally got my ride back from the shop and here is pic of whole car. Love the look, but it rides like crap now, really stiff and bouncy. He didn't lower the front too much to help with navigating my driveway. So should I come back up a bit in the back? Coilovers?
I did not see it mentioned, but what part of the suspension are you rubbing on & is it possible that your shocks are bottoming out? causing your stiff/bouncy ride. Pictures from the underside would probably help.
Last edited by 6speedsteve; Feb 12, 2017 at 01:51 PM.
I did not see it mentioned, but what part of the suspension are you rubbing on & is it possible that your shocks are bottoming out? causing your stiff/bouncy ride. Pictures from the underside would probably help.
Hits on the end of your leaf spring, I see that wheel is listed as a 65mm offset & stock is 58mm so only about .200 more inset than std rim. May possibly need to run a spacer to push wheel back out to get your camber back. Coilovers will fix that, as your leaf spring gets removed, or as you stated maybe raise it back up some, not sure if that will help.
Sitting THAT low, you HAVE to be riding on the bumpstops......
EDIT.....one other thing I just remembered, is "aero rake". In order to handle properly, at speed, the front end needs to be a little lower than the rear, to get air flowing OVER the hood and the rest of the car, and not under the car, causing lift. You should lift the rear a little, to achieve this.
Last edited by leadfoot4; Feb 13, 2017 at 07:30 AM.
Sitting THAT low, you HAVE to be riding on the bumpstops......
EDIT.....one other thing I just remembered, is "aero rake". In order to handle properly, at speed, the front end needs to be a little lower than the rear, to get air flowing OVER the hood and the rest of the car, and not under the car, causing lift. You should lift the rear a little, to achieve this.
It sure feels like it's riding on them. I am definitely going to come up a little then. Thanks for your input!
It sure looks good being that low, but the rear looks too low compared to the front. As was mentioned, there should be some forward rake. The recommendation is 1/2 to 3/4" higher in the rear measure at the rocker panels. It would probably help a few of your issues. What shocks are you using? If you don't want to go coilovers, try Bilstein Sports, they work well with lowered cars. You also could contact Doug Rippie Motorsports, they have the Sports specially valved for them at a price not much more than regular Bilsteins. I have the regular version and they work well.
From: Piedmont, SC Currently Own: 99 Nassau blue FRC. Previously Owned: 84,95,98 Indy Pace,01 Z06
Originally Posted by striper
It sure looks good being that low, but the rear looks too low compared to the front. As was mentioned, there should be some forward rake. The recommendation is 1/2 to 3/4" higher in the rear measure at the rocker panels. It would probably help a few of your issues. What shocks are you using? If you don't want to go coilovers, try Bilstein Sports, they work well with lowered cars. You also could contact Doug Rippie Motorsports, they have the Sports specially valved for them at a price not much more than regular Bilsteins. I have the regular version and they work well.
The rear needs to be raised some to provide the proper aero rake. I'm running bilstein sport shocks lowered on West coast corvettes lowering kit and running 19x12 rears with 305/30/19. Probably could also use a thin spacer to accommodate the offset.
It sure looks good being that low, but the rear looks too low compared to the front. As was mentioned, there should be some forward rake. The recommendation is 1/2 to 3/4" higher in the rear measure at the rocker panels. It would probably help a few of your issues. What shocks are you using? If you don't want to go coilovers, try Bilstein Sports, they work well with lowered cars. You also could contact Doug Rippie Motorsports, they have the Sports specially valved for them at a price not much more than regular Bilsteins. I have the regular version and they work well.
Great advice, might look into the Bilsteins. Thanks!
The rear needs to be raised some to provide the proper aero rake. I'm running bilstein sport shocks lowered on West coast corvettes lowering kit and running 19x12 rears with 305/30/19. Probably could also use a thin spacer to accommodate the offset.
that is the same lowering kit that I used. Do you know which model Bilstein? There are 2 or 3 different ones that show fitment on the rear of a C5.
Lowering issue
The rear needs to be raised some to provide the proper aero rake. I'm running bilstein sport shocks lowered on West coast corvettes lowering kit and running 19x12 rears with 305/30/19. Probably could also use a thin spacer to accommodate the offset.
