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Old 10-10-2010, 12:02 PM   #1
yellowssm
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Join Date: Jul 2007
Location: las vegas,nv
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Setting up car for drag racing...

I dont know if this is a stupid question but here goes anyways. To all you drag race pros... I was gonna throw my drag radials (mickey thompsons et street II 265/40/18) on soon and head to to the drag strip. The wheels they are on I have the choice to run a 15 mm spacer in the rear since they are my road race wheels and there is plenty of clearance. Would there be any benefit (drag racing wise) having the wheels further out or should I not run the spacer?

Secondly, since most Hpf guys have the rear adjustable camber arms its easy to change the camber (i also have an alignment machine at work) what should I set the rear camber to? I was
thinking 0, but shouldn't we still have a little
camber in there? When we accelerate and the car square doesn't that make the rear camber change a little?

Is there any other suspension or tire tweaks I can do or you guys can suggest? Thanks
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Old 10-10-2010, 01:25 PM   #2
faelar
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Quote:
Originally Posted by yellowssm View Post
Secondly, since most Hpf guys have the rear adjustable camber arms its easy to change the camber (i also have an alignment machine at work) what should I set the rear camber to?
I think most the HPF guys running camber bars are doing so not for camber reasons (unless there car is lowered) but because the OEM's can and will bend due to hard launches.

Aside from upgraded bushings, beefier camber bars, axles, diff and wheel/tire combo's, I don't know of many modifications available to support drag racing. Simply put, IRS suspensions suck for drag racing.

Torque arms have been developed for cars like the Cobra, but to my knowledge nothing to help keep pinion angle down and help weight transfer has been developed for the E46 M3.
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Last edited by faelar; 10-10-2010 at 01:28 PM.
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Old 10-10-2010, 01:47 PM   #3
///M3-QTR
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If you have adjustable shocks, run full soft at the rears, full stiff at the fronts.

Or if you want, run softer rear springs, it should help on weight transfer.
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Old 10-10-2010, 01:53 PM   #4
yellowssm
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I know we get the adjustable bar because the oem
Ones bend bit since we have these it's easy to adjust the rear camber. So I was just wondering what would be best
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Old 10-10-2010, 02:05 PM   #5
yellowssm
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Originally Posted by ///M3-QTR View Post
If you have adjustable shocks, run full soft at the rears, full stiff at the fronts.

Or if you want, run softer rear springs, it should help on weight transfer.
Lol my tck coilovers are 550lb springs front and 600lb springs rear
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