Rewire

I have heard that even minor toe variance can be detrimental to handling. Do you think that even a variance this small would be detectable?

Car Analogy

This is precisely what my whole post was about. The same tires on another car might work great, yet on this car same tires can be spooky.

Its got nothing to do with traction, its all about sidewall stiffness. This car is extremely sensitive to tires and alignment.

You can't use experience of how tires work on other cars as a guide to how they'll work on this car.

TsukubaCody

You’re not driving a tesla or s2000 on all seasons on track, so yes, I do know where you’re driving.

you’ve been given a lot of potential culprits and washed them away with ‘but mah tesla’

sam_spider

Enough. You've made your point.

Jub

.07 degrees is not an insignificant amount. Think about a rear steering vehicle, be it a tractor, fork lift, etc. Rear toe has a very significant effect. I don't want to open this can of worms, as it exists in many threads on this forum BUT some people will recommend .1 degree total toe in for the rear. I am not of that camp but will avoid that argument here as it's not really the point.

Personally, I am very specific about my alignment settings and you will not see my S aligned by a "Firestone" or "insert generic tire store here". Mine goes to shops that offer track car prep and is aligned to nearly the exact specs I ask. I do have a .02 degree variance on my latest alignment which is not noticeable. Firestone and the like generally look for "green" and the spec on the S2k is wide. Green means it is within tolerance of the spec but not precise. When I first got my AP2 (after having an AP1) from the "normie" previous owner, I had to cross my fingers it wasn't messed up because it just felt off. I was used to my AP1 with very specific alignment settings and extreme summer tires. The AP2 was on good Michelin all seasons with a decent "green" alignment but drove like crap. It wasn't darty or scary but it was not precise. That being said, I wasn't doing 105+ in it either. Add alignment and extreme summers and it drove like a champ.

Billman250

Rewire, increase your front to to +.05 each side, for a total of .10+

See how your stability is.

Rewire

I will try that, have the wheels re-balanced, and ask that my rear toe be identical or close to.

Thanks all.

Mr.Matchbox

Get a set of 16" wheels and buy real dedicated good winter tires. (Nokian for Example)
Use the wheels you have and fit proper high performance sport tyres.
Switch the wheel sets in spring and autumn.

Problem solved.