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Motorsports & Track Forum
From Auto-X to Trackday to Racing and Professional Motorsports this is the place to discuss making BMWs fast

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Old 07-20-2008, 02:22 PM   #1
K13 CSL
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Rear Camber

Has any body adjusted the rear camber right out for track day's, was is better or worse on the track, & would you run the car on the road like this,will it just kill the tyres????
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Old 07-20-2008, 03:27 PM   #2
FTWeisse
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Since the CSL comes with adjustable lower control arms, use them! Dial in some camber for track and then dial it back out for street use. Typically, I'm using -1.8 - -2.0 degrees of camber in the rear on the track, but -.8 - -1.2 is fine for the street. I was running -2.0 degrees on the rear for a while because I got lazy but it just killed the inside of the tyres.

Same goes with the front camber. My car likes about -2.8 to -3.0 on the track but it's rubbish on the street. -1.5 is what I use on the street. I'd like to go more positive to about -1.2 but my camber plates won't allow it.
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Old 07-21-2008, 09:27 AM   #3
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it depends on how much ur running in front camber. but a moderate amount of negative camber for the track would be -2.5 front and -1.5 rear. you will get some uneaven tire wear, depending on your style of driving. On my mostly track car i run -3.6 front and -2.5 rear. you should have a suspension tuner help you. so you can focus on the driving part....D.
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Old 07-21-2008, 01:32 PM   #4
K13 CSL
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The problem i am having is i want more speed out the corners on track but it is starting to slide when i am trying to get on the power.
I was thinking more camber on the rear as the CSL can be ajusted ???
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Old 07-21-2008, 02:42 PM   #5
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Disregard my previous post about rear camber...I'm running -1.5...I used to run 1.8 - 2.0 when I didn't want to change up the camber. Wasn't thinking when I made the post.

As for your sliding problem, obviously you're going to slide due to the LSD but I don't know if that's so much of a camber issue Maybe it's a grip issue that could be solved by going with a bigger or better (or both) tyre. PM MRSHELLEY...there's another alignment thread in this forum and he's posted up some pretty good info there...
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Old 07-21-2008, 02:59 PM   #6
K13 CSL
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I run cups on my CSL
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Old 07-21-2008, 03:20 PM   #7
FTWeisse
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Quote:
Originally Posted by K13 CSL View Post
I run cups on my CSL
I went through 2 sets of cups on my car...ended up switching over to different tyres because they didn't last enough and really hurt my wallet

BTW, I love you have the black CSL...really rare If it's right-hand drive then even moreso
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Old 08-21-2008, 10:27 PM   #8
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To properly gauge how much camber the car needs you need to do tire temps across all four tires at a track day. Have a buddy do the temps as you come into the hot pits. With a GPS data logger we have found -2.8 to -3.0 of front camber and -2.5 rear camber provided the most lateral grip on my E46 M3. Also, agressive toe kills the tire not camber. I use .20 deg total toe-out in the front and .40 deg total toe-in at the rear. Now this toe setting is agressive esp the rear. The front is not too bad, I got over 20k miles out of my front tires. My M3 is only driven to and from track days and autocross so its not a daily driver. To overcome the OP oversteering issue the car needs negitive camber and you can set the front toe to zero and some toe-in at the rear will also reduce the oversteer.
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