Ground Control STREET camber plates + fitting 295/30 tires on the front.

[Adrian g.]

Can anyone confirm if the bump stop washer/cap needs to be installed with the GC Street plates? Seems like my car sits 1/4" higher after the plate install, and I was told ride height wouldn't change.

[StripclubDJ]

Originally Posted by Adrian g.

Can anyone confirm if the bump stop washer/cap needs to be installed with the GC Street plates? Seems like my car sits 1/4" higher after the plate install, and I was told ride height wouldn't change.

That washer wouldn't change the ride height anyways unless your ridding unnecessary on the bump stops, if that's the case you have bigger problems to worry about lol.

But anyways, take it all back apart, you forgot to put the rubber top mount around the spring on top bud, that's gonna make horrific noise

[roastbeef]

I have these. They add a tiny bit of height.

[StripclubDJ]

Yeah when I used to have them it raised my car alittle, then with -3 camber it made up for it

[Adrian g.]

Originally Posted by StripclubDJ

That washer wouldn't change the ride height anyways unless your ridding unnecessary on the bump stops, if that's the case you have bigger problems to worry about lol.

But anyways, take it all back apart, you forgot to put the rubber top mount around the spring on top bud, that's gonna make horrific noise

Thanks. I confirmed with GC that the bump stop cap isn't needed. I didn't install the top spring pad by choice as I was trying to figure out why the car was sitting a bit higher. fyi, there was no additional noises on my test drive without the top pads.

Originally Posted by roastbeef

I have these. They add a tiny bit of height.

yes.

Originally Posted by StripclubDJ

Yeah when I used to have them it raised my car alittle, then with -3 camber it made up for it

Right. I ended up measuring the stack height of the GC Street plates and it is right at 31mm. The factory mounts are about 27mm - so, these plates will raise the car ~ 1/4", no way around it.

Also, fyi, GC can provide what they call a short version of this plate which allowes increased suspension travel for those with lowering springs. I believe you need to call them to order these, otherwise you get the standard version which maintains the same travel as OEM.

[StripclubDJ]

Originally Posted by Adrian g.

Thanks. I confirmed with GC that the bump stop cap isn't needed. I didn't install the top spring pad by choice as I was trying to figure out why the car was sitting a bit higher. fyi, there was no additional noises on my test drive without the top pads.

yes.

Right. I ended up measuring the stack height of the GC Street plates and it is right at 31mm. The factory mounts are about 27mm - so, these plates will raise the car ~ 1/4", no way around it.

Also, fyi, GC can provide what they call a short version of this plate which allowes increased suspension travel for those with lowering springs. I believe you need to call them to order these, otherwise you get the standard version which maintains the same travel as OEM.

I think I had the short version
Nearly flat

I've done so many set at the shop and I can slightly remember the differences

Just go clubsports and not worry about any of this
Jk jk

[Adrian g.]

Originally Posted by StripclubDJ

I think I had the short version
Nearly flat

I've done so many set at the shop and I can slightly remember the differences

Just go clubsports and not worry about any of this
Jk jk

Yes, I am well aware of the appeal of the KW club sports (they perform well and are relatively inexpensive). Over the years I've had a number of coil over kits on my e92's as well as other BMWs including Ohlin, TCK and others and various lowering springs...

For my current needs and I am very much enjoying the ZCP suspension. I'm only adding camber plates and potentially a large/adjustable front sway.

BTW, per Donavan from GC their street plates are designed to not need the top spring pad.

[Adrian g.]

Final update on these, for anyone planning to run the GC STREET camber plates on a ZCP M3 (or with lowering springs)

1. Make sure to order the "short" bushing version of the GC STREET plates, you'll likely need to call and specifically request this. Otherwise, as was in my case, the car was resting on the bump stops, which isn't ideal and furthermore raised the car a bit.

2. I would also recommend swapping to the shorter E36 bump stops as they allow for a little more suspension travel.

3. I chose to use the bump stop cap/washer as it engages the entire bump stop rather then just the small inner portion of it as would the metal sleeve which comes with the GC plates.

4. Per GC I did not use the top spring pad and have not noticed any additional NVH.

*In the end the car sits about 2mm higher.

**Pics of the shorter bushings.

[Adrian g.]

Max camber these plates allow, for track days. Still happy with the plates; they are working very well for my needs.

[StripclubDJ]

Originally Posted by Adrian g.

Max camber these plates allow, for track days. Still happy with the plates; they are working very well for my needs.

You should be at almost -3.8 or more right?

I just put a set on a e90 and it wasn't maxed like that and I had it set to -3.5

[Adrian g.]

Originally Posted by StripclubDJ

You should be at almost -3.8 or more right?

I just put a set on a e90 and it wasn't maxed like that and I had it set to -3.5

I will measure it next time but likely in the high 3's.

Looking at the second photo makes me believe I could run a much wider wheel and tire. Just for fun I may install one of my 11" rears with a 295/30/18 tire on the front.

[StripclubDJ]

This is mine

-3.5 r
-2.0 r
18x10 275 +25 15mm spacer
18x11 305 +44 15mm spacer

[M43S7RO]

Originally Posted by StripclubDJ

This is mine

-3.5 r
-2.0 r
18x10 275 +25 15mm spacer
18x11 305 +44 15mm spacer

305s give you any issues?

[StripclubDJ]

Originally Posted by M43S7RO

305s give you any issues?

Nope not at all

I've set up a couple this way

[Adrian g.]

Originally Posted by StripclubDJ

This is mine

-3.5 r
-2.0 r
18x10 275 +25 15mm spacer
18x11 305 +44 15mm spacer

How do you like the R888R's? I've read mixed reviews on them...car looks fantastic, btw!

[StripclubDJ]

Originally Posted by Adrian g.

How do you like the R888R's? I've read mixed reviews on them...car looks fantastic, btw!

I'll find out on the 27th when I go to button willow
I got the 2 front for free so I figured I'll give them a try
So far on the canyon sprint I did it was too much grip for me to test on the street ofcourse lol

I just wanna see how the side wall stiffness is really, ofcourse the nt01 is a superior tire, but hey why not give it a try and see what happens


And thanks man!

[StripclubDJ]

Fitment came out pretty decent and zero rubbing, you should throw some spacers on with the camber you have now


How does your car handle now with the plates ?

[Adrian g.]

Originally Posted by StripclubDJ

Fitment came out pretty decent and zero rubbing, you should throw some spacers on with the camber you have now


How does your car handle now with the plates ?

I'm ok with it not looking flush. I might actually run a little less camber next time based on temps across the tire and wear.

I'm tempted to try a 11" front and 12" rear... but not sure who makes wheels in those sizes with the correct offsets.

[StripclubDJ]

Originally Posted by Adrian g.

I'm ok with it not looking flush. I might actually run a little less camber next time based on temps across the tire and wear.

I'm tempted to try a 11" front and 12" rear... but not sure who makes wheels in those sizes with the correct offsets.

From my experience it's near impossible
The 11 is a couple mil from the inside body on the rear
And a 11 front lock to lock just won't work
We've tried
10.5 lock to lock required a fuck ton of shaving the pinch weld on the race car, all the way to the flat body and still rubs

[Adrian g.]

Originally Posted by StripclubDJ

From my experience it's near impossible
The 11 is a couple mil from the inside body on the rear
And a 11 front lock to lock just won't work
We've tried
10.5 lock to lock required a fuck ton of shaving the pinch weld on the race car, all the way to the flat body and still rubs

Was this with a 35 series profile tires or 30?

[StripclubDJ]

Originally Posted by Adrian g.

Was this with a 35 series profile tires or 30?

Even with a 30 up front a 11 was too much

Most I would do is 10.5
You really aren't gaining anything with a 11/12

[Adrian g.]

Just for fun, I decided to test fit my Apex EC7 18x11 et44 (rear) wheels with 295/30/18 Advan A052 tires on the front of my car.

I have GC street camber plates installed and for the purpose of this testing, I had them set to max camber. I also have HR springs installed on my '13 ZCP e92.

First I tried a 20mm spacer for an effective offset of et24. This was a no go and the wheel touched the strut. Shown in photos: #1, #2.

Next I tried a 25mm spacer, which cleared the strut just fine, for an effective offset of et19. (et20 should work as well, so the common 18x11 et25 wheels with a 5mm spacer would be ideal, imo) Photos: #3->#9 show this fitment.

Photo #8 shows the clearance to the front of the liner at full lock, and photo #9 show the slight rub on the back of liner again at full lock.

Conclusion, I believe running a 295/30/18 tire on a 18x11 et20 wheel is do-able with a track only alignment (max negative camber).



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