HeissRod

Actually, toe-in increases straight-line stability while toe-out kills it. So, if you decrease your toe to zero, you are inducing toe-out compared to your current values. When our cars accelerate, toe-out is introduced, so setting initial toe-in allowing to flex to zero toe under acceleration is what you should shoot for. If you want to try anything, increase your toe-in.

GregMB

I guess this is where I'm getting confused....

If the factory was expecting "zero toe" under hard acceleration (due to bushing deflection of their rubber-bushed toe links) and spec'ed a slight amount of toe-in to compensate for that deflection, shouldn't I be setting up my car for zero toe?

The newly installed toe links have NO rubber in them, so presumably if I've got toe-in at rest....I'll still have toe-in under hard acceleration too. If I want the stability of "zero toe" under hard acceleration, shouldn't I be setting the car up for zero toe on the alignment rack???


-G

HeissRod

Depends on how much the factory flexes vs. Evosport. Evosport has no webpage, so I can't read about their product, but I can't imagine that that they are able to reduce flex to zero.

GregMB

UPDATE!

It looks like Michelin PSS are more sensitive to tire pressure than I realized.

I'd been running 32F/36R and got lots of squirm. Today out of desperation I tried 40F/42R...

IT WORKED!

I've been hammering my launches (ESP on and off) and the car is tracking a LOT better.... Almost perfect I'd say.


-G

GunMoto

I recently mounted Michelin PSSs and I've noticed they do squirm a bit. The PS1s I had mounted previously did not squirm at all.

Thanks for the update G!

GregMB

Try some extra pressure and report back. I'd be curious to hear what kind of pressures people run.

-G