Thats great for a street driver but when your running 100 plus down a straight with uneqaul caster will cause instability in a straight line.

Last time I checked this was a street car website. :unibrow: And I disagree that a .5 degree difference would cause any stability issues. Low caster and toe out cause stability issues.

For how much longer :lol:

FWIW I run 5.75" (both sides) and my wheels are definitely aft of centerline.

Just until Flash finally gets fed up with Todd and bans him. :rofl:

Good point!

He wouldn't do that to me.:lol:

Like Todd said unequal caster for road crown.

for whatever its worth I've run the standard 0.5* unequal caster in every alignment I've done in my car so far. I certainly wasn't a mad speed demon but I did see 100+ mph on several tracks including 120 range at Big Willow. I never noticed any pull or instability.

Thanks Todd. I still have a lot of confidence in the results of the TCI parts and running 5* vs 7* at my skill level and level of build effort probably isn't going to matter anyways lol!!

The TCI car has the prototype subframe and it's mounting points are a 0.25" further back than the production and I've never heard anyone giving them grief about how their wheels look on the car and it certainly performs awesome at the local good guys and RTTC events I see it at! I got a lot less concerned once I figured out the issue wasn't specific to one side of the car.

As long as I can run 5*+ of caster and a 275 front tire I'll be pretty happy.

I decided to go through my cardomain pics and forgot I had a pic uploaded of V2.0 with a 275 up front.

So my old set up looked like this when trying to stuff 275 up front with about 5.5* of caster. NT05 275/40/18 on a 9" wheel with 5.5" of BS.
http://carphotos.cardomain.com/ride_...4043_large.jpg

R888 275/35/18 on a 9" wheel with 5.75" BS and 6.25* of caster with the TCI subframe.
http://carphotos3.cardomain.com/imag...1781_large.jpg

Looking at these pics it seems pretty clear TCI does indeed attempt to duplicate the tire position as a stock subframe.

5 degrees of caster and 2 degrees of camber will treat you fine. Alignment has a lot to do with the application. The middle road that pro touring dictates is tough for alignments. It's a compromise. 2 degrees of camber will wear the inside edge with a bunch of street miles. It really just depends on the amount of track time if tire wear will be a problem.

Forget all that, you are running R888's now. You won't have to worry about it. :lol:

I'd start this project all over again.

Wow that's tuff love... I thought you guys were friends.:rofl:

Chad, glad to see some progress on the car. Looks good.