X73 definitely got more camber than M030, I think Baker's car got numbers similar to what someone posted here.

 

My recollection from discussions with Greg. J. who car is 981S had X73 was that he could not get anywhere near -2.0 up front. If Ms. Baker was able to get -2.5 up front, I'd like to know how. I fully understand the lower the car is on lower springs, it inherently will gain negative camber but that drop difference is 10mm on M030 or 1/3".

 

Right... but you said -1.5 and his car is an X73. I never said -2.5...

 

Ken, I still have that Ohlin setup! It works very well for autocross!

David

 

Thanks Dave. JRi is looking into building me some shocks custom valved by JJ and if they can't or don't want to than my next choice is Penskes custom valved by A.R.E. I have Forgelines on order but, I have feeling that I may have forego Parade this year.

 

I have a 15 CS with pasm and got 1.7 in the front. I think it was just luck as mostly I’m hearing 1.5 is normal max. I also went with 18” for AX and track using the falkens which so far are great. It seemed the only choice for my stock 20’s were Cup2 connect.

 

Correct. I had -1.8 front -1.8 rear

 

I had my car aligned with a go-fast alignment today and I got the expected neg. 1.6 in the front and surprisingly I got neg. 2.4 in the rear. Also, as I get some time on the new shocks the car may settle some and I "may" get a tad more. We'll see. It would be nice if I could get more in the front but, that is wishful thinking.

 

You probably don't want that much negative camber for the rear.

 

Probably not with only 1.6 in the front. The Yokohama tires might like it but, I'm a little concern that the front may want to walk out on me especially on corner exit.

 

I kinda wonder with 8 some degrees of caster is any more neg front camber really necessary with the Yoks or Falkens?
i probably should run about 2 degrees neg in the rear. Just guessing until I make some runs and take some temps.

 

Yoks will take as much as you can give them and will wear and perform better with more. Falkens too, but don't need it as much.

 

I read every thread I could find on the X73 and alignment on the 981. Best advice I was given was to max out the Rear camber, and make the front 0.5 less. I also found the "Max 1.6 Front and 2.0 Rear" without modification not to be the case. Maybe the Spyder has something different in it's X73 suspension. I'll post back how this alignment feels after my next autocross. On paper it looks good. My configuration below with factory stock suspension, with stock 20's:

 

Less front camber than you can achieve (within reason) is not normally advisable for autocross. If you can get more, I'd take more. -2.0 for the rear is probably a good place to be though.

 

Follow-up report.
Alignment seems right. Autocross performance is great and the wear is even on the P4S. After four events car and driver were competitive. Better turn in and ultimate grip. It feels great. I recommend it for the purpose.