Wheel / coilover interference, 2010 SS

[Boulderbust454]

I've been running 20x10 ccw sp505a, 275 up front for 6 years on the stock suspension and pedders supercars. Recently installed ridetech level 2 and hit a roadblock.
The 20x10 fronts hit the spring.
The 20x11.5 on 315's fit perfectlyout back.
On stock rims the car felt great!

RIP supercars :(
Just a heads up

[My 5th]

Been there, done that. My solution was to go with 1LE shocks and struts with BMR 1" lowering springs. The clearance issue seems to be a problem with the Ridetechs. My Pedders Xa's had more clearance than stock--I just put 50,000 miles on the Pedders and wanted new shocks. I still have the Pedders Xa's, never leaked, only have a little rust on the springs if anyone's interested.

[chase@ridetech]

Originally Posted by Boulderbust454

I've been running 20x10 ccw sp505a, 275 up front for 6 years on the stock suspension and pedders supercars. Recently installed ridetech level 2 and hit a roadblock.
The 20x10 fronts hit the spring.
The 20x11 on 315's fit perfectlyout back.
On stock rims the car felt great!

RIP supercars :(
Just a heads up
Attachment 790096

We used a 10" wide CCW on the front with 285/35/20 tire on our car. Their are several variables that can cause clearance issues, a couple being backspace on the wheel and the camber. The front CCW wheels that we used have a 6.75" backspace and we were around -1.5 degree camber.

The off the shelf kit uses a 10 spring, but we used an 8" on our car. Running an 8" creates the additional space needed for a wider wheel but limits the overall height.

I can swap you out to a 8" spring and you shouldn't have any issues. Give me a call and I will get you taken care of. 812 481 4736

[chase@ridetech]

This would be the approximate ride height with an 8" spring.

[Need4speed_motorsports]

What is the offset on the CCW wheels that is important to know.

[Boulderbust454]

Thanks Chase!
I have to admit, the car's height is perfect right now, 29" to the fenders.
Running -.8 camber at the moment. That is pretty low by my standards and that height loads up these coils pretty good. This is a daily driver. I'm on the hairy edge of height now so I can't go any lower. Where do all you guys live where you can slam your car like this?!

I used to pucker up at the sight of expansion joints with my supercars. Your coilovers are eating them up without issue.

I dare say I'm going to shim the wheels. The question is, how much clearance do I need? I see 5x120 shims at .5". That seems like more than I need and may start looking funny at the fender. Is 1/4" enough?


BTW, I had a supercar front completely puke, in my driveway, 15,000 miles. No warning.
I'm really lucky it didn't happen on the highway. Not only will you lose your camber and damping, but it fills your wheel well full of the foulest smelling oil, along with your brake rotor.
Got the rears off and one of them had shifted in the upper mount. I have them if anyone wants them for parts.

[FunkedOut]

Originally Posted by chase@ridetech

We used a 10" wide CCW on the front with 285/35/20 tire on our car. Their are several variables that can cause clearance issues, a couple being backspace on the wheel and the camber. The front CCW wheels that we used have a 6.75" backspace and we were around -1.5 degree camber.

The off the shelf kit uses a 10 spring, but we used an 8" on our car. Running an 8" creates the additional space needed for a wider wheel but limits the overall height.

I can swap you out to a 8" spring and you shouldn't have any issues. Give me a call and I will get you taken care of. 812 481 4736

I'm in a similar situation trying to use OEM rear 9" wheels on the front. A 275/40-20 rubs on the coils at anything less than 0.0* camber. I went back to 8" in front with a 245/45-20.

The 10" wide wheel you mentioned with 6.75" backspace is real close to the OEM 9" offset. If anything, your wheel has ~5mm more offset (less clearance if the wheels were both the same width).
Good news to hear you made it work with the 8" spring.
Did you have any room left for more neg camber?

I didn't put very much preload at all on the fronts to get my ride height. I'm at 600mm (lower wheel edge to fender lip); about a 1" drop.
That pic looks great, but I'd prefer a little more height.
Is that 8" spring also 275lbs?
Maybe a stiffer rate would help get it up?
I know I could stand a stiffer rate in the rear, as the preload is just about maxed out to get the same height as the front.

[Orange 2010 Camaro]

Originally Posted by FunkedOut

I'm in a similar situation trying to use OEM rear 9" wheels on the front. A 275/40-20 rubs on the coils at anything less than 0.0* camber. I went back to 8" in front with a 245/45-20, but can't get past -1.7* of camber because it hits the coil.

The 10" wide wheel you mentioned with 6.75" backspace is real close to the OEM 9" offset. If anything, your wheel has ~5mm more offset (less clearance if the wheels were both the same width).
Good news to hear you made it work with the 8" spring.
Did you have any room left for more neg camber?

I didn't put very much preload at all on the fronts to get my ride height. I'm at 600mm (lower wheel edge to fender lip); about a 1" drop.
That pic looks great, but I'd prefer a little more height.
Is that 8" spring also 275lbs?
Maybe a stiffer rate would help get it up?
I know I could stand a stiffer rate in the rear, as the preload is just about maxed out to get the same height as the front.

Another option would be to use a 3mm. billet alloy spacer that would move the wheel out an additional 1/8 inch. You would probably still have enough thread length on the wheel studs to correctly torque the lug nuts. I think you need AT LEAST 7 or 8 FULL turns on the nuts to be safe.

I ran into the exact same problem your having with the Ride Tech Level two coil overs on the front as well when I used a BBS CH-R wheel in the 19 BY 9.5 inch size. This wheel has a 6.650 back space with a 35 mm. offset.

I only had approximately 3/32 of clearance from the tire side wall to the spring, using a 265/35/19 Yokohama Advan Sport tire. I was already at ZERO camber, so I just left the camber settings alone & am running as is .

Hope this info. helps you.

All The Best

Orange 2010 Camaro

PS. So far I am getting away with it with NO tire rub. Attached is a photo of my 2010 SS that has been lowered a FULL THREE inches using the Ride Tech Level TWO coil overs & 19 inch wheels!

[FunkedOut]

Thanks for the info, but I am trying to hit -2.0 degrees of camber, and maybe more.
I haven't been able to run at those numbers and measure temps.

[Boulderbust454]

Stylish

[Boulderbust454]

https://www.instagram.com/p/BEfPSHdOG92/

Enough about wheels, they're just under this
This was the post pedders puke ride

[Orange 2010 Camaro]

Originally Posted by Boulderbust454

https://www.instagram.com/p/BEfPSHdOG92/

Enough about wheels, they're just under this
This was the post pedders puke ride

Your thread makes no sense & is of the topic!

Orange 2010 Camaro

[chase@ridetech]

Originally Posted by Boulderbust454

Thanks Chase!
I have to admit, the car's height is perfect right now, 29" to the fenders.
Running -.8 camber at the moment. That is pretty low by my standards and that height loads up these coils pretty good. This is a daily driver. I'm on the hairy edge of height now so I can't go any lower. Where do all you guys live where you can slam your car like this?!

I used to pucker up at the sight of expansion joints with my supercars. Your coilovers are eating them up without issue.

I dare say I'm going to shim the wheels. The question is, how much clearance do I need? I see 5x120 shims at .5". That seems like more than I need and may start looking funny at the fender. Is 1/4" enough?


BTW, I had a supercar front completely puke, in my driveway, 15,000 miles. No warning.
I'm really lucky it didn't happen on the highway. Not only will you lose your camber and damping, but it fills your wheel well full of the foulest smelling oil, along with your brake rotor.
Got the rears off and one of them had shifted in the upper mount. I have them if anyone wants them for parts.

I did some additional digging and I believe you can reach that height. Going up higher will create some additional clearance as well. What backspacing does your wheel have?

Also, I drove our car on the entire PowerTour at the height you see it at with no issues There where a few construction zones and some potholes I had to dodge but it didn't rub on anything!

[chase@ridetech]

Originally Posted by FunkedOut

I'm in a similar situation trying to use OEM rear 9" wheels on the front. A 275/40-20 rubs on the coils at anything less than 0.0* camber. I went back to 8" in front with a 245/45-20, but can't get past -1.7* of camber because it hits the coil.

The 10" wide wheel you mentioned with 6.75" backspace is real close to the OEM 9" offset. If anything, your wheel has ~5mm more offset (less clearance if the wheels were both the same width).
Good news to hear you made it work with the 8" spring.
Did you have any room left for more neg camber?

I didn't put very much preload at all on the fronts to get my ride height. I'm at 600mm (lower wheel edge to fender lip); about a 1" drop.
That pic looks great, but I'd prefer a little more height.
Is that 8" spring also 275lbs?
Maybe a stiffer rate would help get it up?
I know I could stand a stiffer rate in the rear, as the preload is just about maxed out to get the same height as the front.

We had the camber set at -1.5* and still had acceptable clearance. We also changed the rate to a 300lb spring with 0 preload when we dropped down to the 8" spring.

Call me and I can swap springs out if you want to give it a shot. 812 481 4736