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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 05-03-2010, 04:27 PM   #1
323tom
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Negative camber question

hey guys so I just ordered a set of UUC front camber plates/Rear adjustable control arms... I will be setting the negative camber to -2 to -2.2 with a 1/16 toe, what as a good camber/toe setting for the front? I will be putting 245/35/19 on the front of my non-m coupe and 275/30/19 btw... thanks!
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Old 05-03-2010, 05:39 PM   #2
xixixi
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anything but a square setup for those alignment numbers will require a constant purchase of tires. I run 2.5 to 3 degrees front camber and i replace tires once a year (that's including all the auto-x and track days.) I can only recommend a square set up with that much neg camber of course if you can afford R compound tires every 6 months by all means who cares what you run!!! Guess I took this thread off the OP's path. DELETE!!!
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Old 05-03-2010, 06:24 PM   #3
323tom
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lol

I wont be doing a square setup... tires once a year is fine with me... the negative camber you run is more then I will be running upfront im pretty sure... anyone else? lol
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Old 05-03-2010, 06:38 PM   #4
xixixi
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Roflmao

Quote:
Originally Posted by 323tom View Post
I wont be doing a square setup... tires once a year is fine with me... the negative camber you run is more then I will be running upfront im pretty sure... anyone else? lol
Your first post is very broad to say the least... what alignment system are you going with hunter??? also are you concerned about the OEM weight specs? If not then you will have to adjust your camber/caster/toe custom. As the hunter specs will be off.. If not are you going to include your weight in the drivers seat? are you going for 4 corner balancing? going with a hpf turbo in a 323 i'd assume you wipe ass with 20's ,if thats the case what is the question? what are your goals? it's impossible to give advice on such little info... LOL ASE cert anyone with a better education to help this man I reread your post and without your intentions it's impossible to give you any accurate assumptions

Last edited by xixixi; 05-03-2010 at 09:26 PM.
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Old 05-03-2010, 10:24 PM   #5
323tom
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lo

lol im no mechanic man, I should probably just have the alignment deal with it I was just wonder what basic camber settings people are running..
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Old 05-03-2010, 11:20 PM   #6
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there is no basic alignment....it all depends what the function of your car is going to be and what offset wheels you have.
If your car is going to be a street car -2 is pretty good enough. If you car is meant mainly for track with 18x10 +25 sqaure wheel set up then at least a -3.5 is necessary. I am assuming you have a ///M BTW.
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Old 05-08-2010, 05:26 AM   #7
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There is a balance between track tire life and road tire life. You have to figure out what is good for you.

I just changed my alignment to -2.5 Front and -1.8 Rear with a KMCA plate (that I really hate).

Before I had -1.4 Front and -1.4 Rear.
I completely destroyed my front tires on track: A set of hoosier and a set of Falken.

This year I am running Toyo R888 and Dunlop star spec Z1.
With the new alignment I have a better grip in the rear when I come out of tight turns.


The front camber is too much for the Toyo unless I heat them up as required.
The problem with the R888 that its operating temperature range is very narrow. They stay easily cold or they overheat.
Next year I will return with the hoosiers.


So the problem with the -2.5 front camber is the loss of braking power ... The ABS gets in very quickly compared to the previous Hoosier/-1.4 setup. However hopefully I will extend the tire life on track.


So your setup seems to be reasonnable if you are doing a couple of track days per year.
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Old 05-08-2010, 06:53 PM   #8
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If you live in an area with rough roads, even a little toe out on the front is not much fun on the street...HOLD ON!
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Old 05-13-2010, 12:40 PM   #9
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Quote:
Originally Posted by schulmann View Post
There is a balance between track tire life and road tire life. You have to figure out what is good for you.

I just changed my alignment to -2.5 Front and -1.8 Rear with a KMCA plate (that I really hate).

Before I had -1.4 Front and -1.4 Rear.
I completely destroyed my front tires on track: A set of hoosier and a set of Falken.

This year I am running Toyo R888 and Dunlop star spec Z1.
With the new alignment I have a better grip in the rear when I come out of tight turns.


The front camber is too much for the Toyo unless I heat them up as required.
The problem with the R888 that its operating temperature range is very narrow. They stay easily cold or they overheat.
Next year I will return with the hoosiers.


So the problem with the -2.5 front camber is the loss of braking power ... The ABS gets in very quickly compared to the previous Hoosier/-1.4 setup. However hopefully I will extend the tire life on track.


So your setup seems to be reasonnable if you are doing a couple of track days per year.
Try the Nitto NT01's they are a lot better than R888.
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Old 05-13-2010, 02:22 PM   #10
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So the problem with the -2.5 front camber is the loss of braking power ... The ABS gets in very quickly compared to the previous Hoosier/-1.4 setup.
You're hitting ABS earlier because you're not on Hoosiers anymore, -2.5 camber is a MUCH smaller difference in terms of braking.
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