MHT

Hi guys, anyone with track experience have a good alignment set-up for an '86 951. Car has been lowered with springs and torsion bars, running Yok. slicks (250/650R18) on Fikse wheels. Car is now set with -3deg. camber front, 8min toe-out, 3deg.30min. caster. Rear is- 2deg 30min. camber and 0deg. toe. I can't get any more neg camber in the front and the front tires are worn on the outer edges. They are kind of scalopped and worn down to cord, rear tires wear beautifully. Any suggestions welcomed.

Thanks, Mark

FSAEracer03

Hey man,

I don't have a track setup unfortunately, b/c i dont have a 951 yet ... buuuut, I see you live in my area, where are you in VA?? I grew up in Herndon, lived in McLean for a year and now I'm in Front Royal... I worked at a race shop in Manassas for a couple years (went to school in Manasshole too)

Let me know, I'd love to get a Rennlist gathering in the area once i get my car! anyone else from the DC/VA/MD area with me??

-Kevin

Asarus

You say the front tires are worn on the outer edges ?
What is your suspension setup ?

jerome951

I'm surprised you can make it around corners without the back end coming around. I think conventional wisdom is to have slightly more negative camber in the rear than in front. You can overcome this w/ tire sizing, though.

I'm also surprised your outer edges are wearing on the front. You must be rolling the chassis an aweful lot or using a lot of trailbraking.

BTW, I work in NOVA (live in MD) as well.

MHT

yes worn on outer edges. What do you mean when you say "What is your suspension set up" ? I already put down the alignment settings, if you are talking about components, 30mm torsion bars, Konis front and rear, ground controls front with 450lbs/in springs, front and rear Weltmeister sway bars. If you are not familiar with degrees and minutes i can convert to degrees and fractions and inches of toe.
Thanks for your replies, Mark

Sam Lin

That seems to be a lot of negative camber to still wear the outer tread on the track - are you sure your tire pressures are ok? If so, it's probably your toe out that's doing it, helps turn in but it'll eat the outer tread whenever you're not turning. Try going to zero toe in the front, ease off the negative camber by a little, try 2.5', and see how that goes - turn in probably won't be affected too much.

Sam

TonyG

MHT

What type of camber plates are you running?

TonyG

eclou

Conventional wisdom is to run an extra degree negative front camber than rear for the track. This is true for both your 951 and M3. The stock M3's (as well as other BMW's) come an extra degree negative on the rear than the front, but this is not track-friendly.

keith

Agreed. (Sam Lin and eclou)