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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > KW2's with 245's and 275's ( camber wear - alignement )



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      11-12-2010, 06:24 PM   #1
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KW2's with 245's and 275's ( camber wear - alignement )

Hi guys,

I'll be installig my KW2's on 245's and 275's ( rear 9.5 offset 35 ) on my e90. I don't track, drift or anything crazy, just enjoy some spirited driving at reasonable speeds on mountain roads
When should I align the car after the install ? right away or wait 1 week ?
What do I need to do to get the most out of my tires ? I know nothing about camber wear and I keep hearing that some people get excess wear on their tires after suspension modifications.
I can't figure it out. Please help....
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      11-13-2010, 10:22 AM   #2
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You need as little camber as possible and toe as close to 0 as possible.

Get the alignment done as soon as you install the coil overs.

Last edited by subieworx; 11-13-2010 at 12:22 PM.
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      11-13-2010, 12:13 PM   #3
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Quote:
Originally Posted by subieworx View Post
You need as little camber as possible and tore as close to 0 as possible.

Get the alignment done as soon as you install the coil overs.
This is misinformation.

OP, the main determiner in tire wear is excessive toe. Since you'll be doing the occasional spirited run, you'll want camber.

If you're running stock camber adjustment, you really don't have much room for adjusting front camber. You can drill out the alignment pin to gain some camber, but that may be more than you're willing to invest.

Get as much camber as you can in the front, and 1/16" toe in. Rear camber around -2, and toe in also at 1/16".
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      11-13-2010, 12:25 PM   #4
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We basically said the same thing. Ultimate long lasting tire wear will come from 0 camber and 0 toe assuming straight line (highway) driving.

Op if you are looking to maximize wear especially in the rear run very little toe in (as mentioned 1/16 in per side) and as little camber as you can get away with. You should be able to get down to 1.2 or 1.3 without rubbing. That will maxize tire life over the -2 suggested.
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      11-13-2010, 05:19 PM   #5
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thanks guys
I'll give this info to the alignement guy and I hope my tires will last me more than 30 000 km.
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      11-13-2010, 08:06 PM   #6
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Quote:
Originally Posted by subieworx View Post
We basically said the same thing. Ultimate long lasting tire wear will come from 0 camber and 0 toe assuming straight line (highway) driving.

Op if you are looking to maximize wear especially in the rear run very little toe in (as mentioned 1/16 in per side) and as little camber as you can get away with. You should be able to get down to 1.2 or 1.3 without rubbing. That will maxize tire life over the -2 suggested.
0 front toe and 0 front camber will give you piss poor ballance, handling, and steering response. These settings in the rear will make for dangerous lift throttle oversteer.
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      11-13-2010, 10:20 PM   #7
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Quote:
Originally Posted by subieworx View Post
We basically said the same thing. Ultimate long lasting tire wear will come from 0 camber and 0 toe assuming straight line (highway) driving.

Op if you are looking to maximize wear especially in the rear run very little toe in (as mentioned 1/16 in per side) and as little camber as you can get away with. You should be able to get down to 1.2 or 1.3 without rubbing. That will maxize tire life over the -2 suggested.
On the contrary, my recommendations are nearly the opposite of yours

As David1 mentioned, 0 toe at the rear is absolutely, positively, dangerous. There's a big difference in having 0 toe in the rear and 1/16" toe in from a safety and handling perspective. A bit of toe in is needed in the front as well for a street application since this will give you more stability. 0 toe or negative toe will cause your car to "grab" onto the grooves in the road- not good.

And to reiterate, you want as much negative camber in the front as you can with the stock adjustments, which by and large isn't much at all. You'll probably max out less than -1.5. My rear recommendations have already been posted. The OP doesn't need to worry about uneven camber wear in this application.

Last edited by cyphr; 11-13-2010 at 10:26 PM.
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