Spacers for CSLs?

P

pHilli0

Active member
 Bedford
Sorry if this has been asked before but I couldn't easily find it.
I was thinking of getting some spacers and bolts for OEM CSLs. I want to make the fronts come out and be more in line with the arches and the rears more pronounced. Good idea / bad idea? Any difference on the track?
Cheers gents
 
I've got 12mm Hubcentric on mine, they catch a tiny bit on full lock, however when OG borrowed them, whilst his 224's were being refurbed, they didn't on his Coupe :?
 
Darren Slone said:
I've got 12mm Hubcentric on mine, they catch a tiny bit on full lock, however when OG borrowed them, whilst his 224's were being refurbed, they didn't on his Coupe :?
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Cheers, I have read other who are running 12mm so must be the way to go. Do I need to get another hunter to adjust the geo? Actually thinking about it I had my csl geo applied to the car when the 224s were on. Now the csls are fitted I wonder how out it now is ...hm
 
Apologies for the thread tangent, but this is a very interesting post :)

Are the csls oem?

This would give the front an effective ET of 29, which is the near enough same as the m3/m4 style 437m wheel (except for width 8.5 vs 9 which would maybe add a few mms)...
 
The geo, assuming it's not been knocked out, should be fine and fitting spacers won't change camber or toe.

Scrub radius will be changed so feel, weight and stability are affected. Suspension tuning is a massive area of effects and counter effects and you can spend a long while getting your head around it. I'd take the suck it and see approach, try them, if you like the change in feel and feedback then stick with it. I doubt that many consider it and I doubt it will cause any major drawbacks if I'm honest. It might tramline a little more and it will probably add a bit of weight to the steering but I expect that's the worst of it in real world use.
 
beanie said:
The geo, assuming it's not been knocked out, should be fine and fitting spacers won't change camber or toe.

Scrub radius will be changed so feel, weight and stability are affected. Suspension tuning is a massive area of effects and counter effects and you can spend a long while getting your head around it. I'd take the suck it and see approach, try them, if you like the change in feel and feedback then stick with it. I doubt that many consider it and I doubt it will cause any major drawbacks if I'm honest. It might tramline a little more and it will probably add a bit of weight to the steering but I expect that's the worst of it in real world use.
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Ok good to know. I will grab some 12mm spacers and have the geo checked next time its in.
 
Phil, pretty sure the geo will change slightly as csl spec rubber on CSLs changes the radius size of the wheel compared to 224s. Not going to be much but still, at the least camber will be affected.
Also, sorry wil reply to your pm shortly..
 
TomK said:
Phil, pretty sure the geo will change slightly as csl spec rubber on CSLs changes the radius size of the wheel compared to 224s. Not going to be much but still, at the least camber will be affected.
Also, sorry wil reply to your pm shortly..
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Surely even with different sized tyres the ride height will be the same? (Hub to arch) the suspension has not been adjusted so how is the geo out? Not seeing this.
Regards
 
Smartbear said:
TomK said:
Phil, pretty sure the geo will change slightly as csl spec rubber on CSLs changes the radius size of the wheel compared to 224s. Not going to be much but still, at the least camber will be affected.
Also, sorry wil reply to your pm shortly..
Click to expand...

Surely even with different sized tyres the ride height will be the same? (Hub to arch) the suspension has not been adjusted so how is the geo out? Not seeing this.
Regards
Click to expand...

If the different sized tyres don't equal the radius of the size tyre that you tested the geo on then it will be different.
A 265/30 19" is considerably different in radius to a 255/40 18" (CSL spec vs OEM Z4M spec and what the OP was talking about in his OP), ergo the ride height will be different, and hub to ground will be different.

Edit:seems i'm talking bullshit having read up on interweb, though I have been told by my shop who run a number of motorsport cars that alignment should be redone if you're running different radius/width tyres. How much difference it'll make? I suspect very little.
I was focusing on the hub to ground gap that would change with a different diameter wheel, the bottom of this page was the idea that I was thinking about, but you're right they must remain relative.
http://www.wheels-inmotion.co.uk/tech-cambertheory.php
Thinking about it a bit more the diameter/radius is not what will change the geo but the width of the tyre.
Would a 265 vs 255 make a lot of difference? No. Sorry all :oops:
 
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