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      05-08-2012, 12:08 PM   #1
Exclusivs
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Question Any disadvantage to running negative Camber on Street car?

Hey what's up Wheel Guru's!

Curious to know if there is any disadvantage to running negative camber on a street car? There is the obvious which is pre-mature tire wear, aside from that are there any other disadvantages? Is handling decreased? Straight line feel off? Just curious because I've never run negative camber, but seems to be popular amongst M3 owners.

Thanks in advance!
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      05-08-2012, 12:18 PM   #2
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Guess it would depend how much. Handling should be increased. Probably won't notice any straight line changes.
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      05-08-2012, 12:26 PM   #3
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Quote:
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Guess it would depend how much. Handling should be increased. Probably won't notice any straight line changes.
On the particular setup: -2.50 (F), -2.00 (R)
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      05-08-2012, 12:27 PM   #4
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You'll tramline a bit more on really poor road surfaces, it gets particularly bad on one freeway heading to one of my local tracks. I wouldn't call it so dangerous as to be threatening, but you'll want to stay focus while driving. I run -3 in the front and similar in the rear.
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      05-08-2012, 12:37 PM   #5
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Depending on how much you run it can negatively impact tire wear by wearing out the inside of the tires. I don't know how much these cars can run without wearing out the insides. Latebraking do you run -3.0 street and track without bad wear?
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      05-08-2012, 12:39 PM   #6
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Quote:
Originally Posted by Porschefile View Post
Depending on how much you run it can negatively impact tire wear by wearing out the inside of the tires. I don't know how much these cars can run without wearing out the insides. Latebraking do you run -3.0 street and track without bad wear?
I don't change my camber around, but it does kill tires on the inside a bit. OP already stated in his 1st post that he is aware of tire life effects though. I daily drive a Lexus GS SUV though so I'm ok.

Last edited by LateBraking; 05-08-2012 at 12:45 PM.
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      05-08-2012, 03:25 PM   #7
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Quote:
Originally Posted by ExclusivSTS View Post
On the particular setup: -2.50 (F), -2.00 (R)
DAMN!! That's a lot.
One option is to change the tire out side to side as they're wearing out. Not just switch wheels side to side. It'll help even it out.

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      05-08-2012, 03:28 PM   #8
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-1.5 is all I would do on the street..otherwise you may experience more tramlining and accelerated tire wear ESPECIALLY if you do alot of straight highway driving
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      05-08-2012, 03:53 PM   #9
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Yea I noticed a huge increase in tramlining when I had the most negative camber possible on a stock setup (pins pulled).
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      05-09-2012, 08:33 AM   #10
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A little bit of negative camber is good, but race-car settings on the street can have downsides. The early wear to the inside edges of the tires happens because in a straight line, the tire is (naturally) resting more on the inner shoulder.

Leaning on the edge is not the optimum contact patch for the tire, so there can be some tradeoff in straight-line traction. For a track car the gain in corner speeds will offset any loss in straight line grip, but for a street car the loss of stoplight launch ability and panic stop efficiency may not be worth it beyond a certain point.
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      05-09-2012, 01:12 PM   #11
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I run negative 3 up front and 2.1 rear. I didnt see huge difference from stock in around town driving when going straight or on the highway. I dont drive M3 daily. I havent run the alignment enough to comment on tire wear.

My tires are worn from 4 track days, especially both left tires from clockwise driving in Buttonwillow. Interesting that my OEM Contis are worn mostly in the middle to a degree when the sides are higher by a couple of millimeters, I'll post a picture. I did 3 events with stock suspension and stock alignment and 1 last event with KW CS and track alignment. But I noticed this tire wear before. Tire pressure 38-40 hot
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      05-09-2012, 01:39 PM   #12
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Neg Camber

Were you able to dial-in three degrees of negative camber w/the stock suspension? I have a comp package suspension and am wondering what the range of alignment will be.

I plan to add some negative camber due to my frequent track days (6-8 days per season - I'm in New England, so usually only spring/summer/fall) and was wondering how much I'll be able to add. -3 full degrees seems high for a street driven car. I was thinking more like -2 or -2.5 front and around the same rear.

Have you checked your tire temperatures w/a pyrometer at the track? I run around 38 psi (max) all around and I'm finding the outside edges are running about ten degrees hotter than the center/inside edge. My Michelin guide tells me that is because of alignment.

So, we'll see. I'll post my results.

-Brian
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