SpitfireS

zzyzxroad Posted on Nov 12 2006, 07:20 PM
In degrees'minutes" that would be:
L: 6'24" R: 6'48"
Front right it out of (UK) spec, not much, but it is.
Maybe if you try to get left and right equal?
I would settle for 6'24" on both sides.

The rest of the allignment looks pretty much spot-on UK-spec.

Another thought :
zzyzxroad Posted on Nov 12 2006, 02:07 AM
This makes me think you had aftermarket wheels on the car.
Did you use your OEM lug nuts with your OEM 16" wheels?
What sort of balancing lead did they use? The self adhesive kind that you can stick on the inside of the wheel (or the rim)?

Last week I picked up an extra set of rear S-02's, they are in storage now, the guy at the tire shop mentioned not to store them upright because the tire may get un-round being upright for a long period (without air pressure).
You may store them upright, but only if a good portion is properly supported.
Did you see how the discount tire shop stored its tires?

Did you have a chance to get some temperature in the tires?
Maybe that helps to get them "straight"?

sprix!

You might have a bend in one of your wheels, but they would have detected that during balancing. Ask one of the techs to test drive, or ride along with you so he can feel the problem. It could be a problem with your tire. Flatspots and cupping are common on tires that have not been rotated, and since we can't rotate ours, this might be a problem.

zzyzxroad

Tires are brand new and the shakes have been there since they went on. Unfortunately, I took the wheels to the tire store and had them mount/balanced, and then I installed them and immediately drove to the alignment shop. Since the shop is close to where I live, I didn't get the car above 50 mph, so I can't say that the shaking was there before the alignment or not.

The aftermarket wheels I had on prior did not exhibit shaking at any speed.

I could always have it aligned to the prior values, but that's just $65 down the drain if it's not the problem.

Oh, and I'm using the lug nuts that I had on with the aftermarket wheels, and the balancing was done with stick-on weights.

milkbubble

OEM rims require ball seat lugs while after market lug nuts have a taper seat. I dont think that would cause vibration but its just a heads up.

zzyzxroad

Thanks for the tip. I'll swap in my OEMs tomorrow.

KingAir

Sometimes you can have a problem with a tyre that balancing will not fix. Local race tyre dealer told me about it, tyre companies know about it but don't really advertise it. Can't remember the technical term
but its basically a fault in that the side wall stiffness is not consistent
around the whole diameter. Can occur in new tires or also develop in
all ready fitted ones.
If changing the wheels fix's it this may be your problem.
Just make enugh noise at the dealer and if they won't do anything
hassle the tyre company.
Best of luck.

zzyzxroad

I'll be calling the manager tomorrow.

King Air: That wouldn't happen to be YOUR plane in your avatar, would it?

sprix!

Seriously though man- alignment being out of spec would not cause your car to vibrate. I would stake my S on it. I could be wrong, but I doubt it strongly. And you can see- your alignment was done acceptably.

sprix!

I would have them check all wheels for bends (again).

sspicollo8

Could be this

https://www.s2ki.com/forums/index.php?showtopic=39249

and a temporary fix
https://www.s2ki.com/forums/index.php?showtopic=241367