Suspension Gurus-What's wrong with my car?!

[JohnnyGraphic]

Thanks zj! I'll probably be under the car this weekend. Will try to see what I can find out.

Been looking into it. Looks like the ECS has a ZHP specific control arms. The control arm bushings that I see most are Meyle HD or the Powerflex.

Johnny

[zj96sc]

no sweat! good luck getting her sorted.

OEM ZHP control arms are the only way you can (should?) go.

Meyle HDs are a great choice for new FCABs. Have a box of them to put on my ZHP, dad runs them, friends run them. All happy.

TREs I'd go OEM.

[JohnnyGraphic]

Cool. Thanks for the suggestions!

[llll1l1ll]

Ball joints in the control arm? What is a TRE? (Sorry, not too hip on some of the lingo).

I think TRE means tie rod end.

[danewilson77]

43,000 and 13,000 more than Dane ever got?! Well, lets see.. 43,000 miles is about umm...35,000 more miles than I got from my first set of Pirelli's. Lol

Because race car is....

[JohnnyGraphic]

Well, old PS2's are too flat spotted to be fitted.

So 4 new Michelin Super Sports and $1500 lighter...Including alignment.

Will be bringing car to tech for suspension issues. Wheel works tech said toe problems caused the cupping.

[Smolck]

My bet is your toe is way out of whack. It is amazing how fast a bad toe setting can kill tires. I changed my control arms and didn't get an alignment. The tires in the pic were bought brand new and had 7000 miles on them. Turned out my toe was out of whack, by a bunch!

[JohnnyGraphic]

My bet is your toe is way out of whack. It is amazing how fast a bad toe setting can kill tires. I changed my control arms and didn't get an alignment. The tires in the pic were bought brand new and had 7000 miles on them. Turned out my toe was out of whack, by a bunch!

That's exactly what happened. I remember seeing that picture when I was researching my tire problems.

Specified Range for Toe is between +.08 and +.16 degrees. Front Right Toe was at +.30 degrees!!! Left was at -.027 degrees!!!

Right Rear was at +.24 degrees (way out of spec) and the left was at +.10 (within spec).

I know my Control Arm Bushings need to be replaced, but will need to check other suspension bits as well. I take it that the Toe is adjusted with the Tie Rod Ends right?

Will need to do some searching to see just how hard it will be do to a DIY on these things. Not looking forward to this at all.

Johnny

[JohnnyGraphic]

All in all, I really shouldn't complain too much. I got 43k miles out of the fronts-Yokohama S-Drives and 22k miles out of the rears-Bridgestone RE-760's. I had to replace the rears since the Michelin Pilot Super Sports doesn't play well with others (should mix & match) and they were worn down to 4/32 and 2.5/32's (Just barely under the 3/32's mark).

Now, I get to go play on some serious rubber. I know they will far exceed anything I can throw at them.

Thanks again for all of the suggestions!

Johnny

[Smolck]

I take it that the Toe is adjusted with the Tie Rod Ends right?

Yep. You may want to reach out to JVR826 on Bimmerfest. He has a track prepped ZHP that he does his own alignments for, he can tell you how to do it properly.