The only problems I ever encounter at high speeds are police officers :eekdance:

check on tires, alignment, and corner balance if you're on coilovers. I drive mine over 100+mph on the race track with no issues

At those speeds I think it's safe to assume winds play a huge part in it. I've taken my car on a track around 120+ mph on sunny and windy days and sunny days I don't have that problem. But I'd still get the alignment checked out.

I've been past 160 in my Z (private track), felt safe. I think alignment/wheels balance/suspension is the area to check.

Haha thank you all for your input I really do appreciate every single post you all took the time out to post. And I don't do it often only when I have a OPENING road with no cars and where I know I can hit those speeds. We have a few major roads here where you can "safely"? Reach those speeds but not sustain it for a long time due to speed checkpoints, my car is going in today at the tire shop I'll have them check everything that has been posted in this log. Will give my diagnostics when it's complete

FYI, Mr. Onzedge is here to help :tup:

It is true.

OP how many miles have you driven your Z? Prior to getting my Z, I was driving a 2014 Honda pilot(which has john deere tractor steering feel). When I first got the Z, the car felt super twitchy, I was holding on to the wheel with 2 hands afraid the car was gonna veer off the highway from a tiny bump in the road. Long story short, you may be overcorrecting. It took me at least 3-4 thousand miles to get fully adjusted to the Z. If you find no mechanical issues with your car this could be your problem. Follow the other members advice 1st...check tire pressure, alignment, have a competent mechanic check the car out.

Update

Just got my tires aligned. It did correct the issue 100%. Everything is in the cleae, they said my rear aligment was way off. So if anyone encounters this issue, here's you answer. And btw while driving I did not feel all over the road... even when I took my hands off the wheel of see what side it rolls too, it still went straight. Again thanks for all the input it's greatly appreciated. Z community is the bom