2 GTOs

I had some work done on my C6Z and needed an alignment and corner balance. I was not thinking and I left the stock run flats on the car. 275/35 and 325/30.

I am putting the NT05s back on which are 285/35 and 335/30.

Will my corner balance be off enough to need to have it redone?

I am doing 6-12 track days per year.

rfn026

You're off.
How much you don't really know.
How serious are you about going fast on the track?

Richard Newton
Newton's Laws

2 GTOs

Serious enough to be annoyed with my stupidity, but smart enough to know that I will probably go to new tires soon and am considering MPSC so it is not worth the money to rebalance until the new tires.

With that said, on Friday, I turned my personal best lap time on NJMP thunderbolt in 50 degree weather. NT05s howling the whole time.

Solofast

So long as the tires are the same size on each end of the car it won't make any difference. It will just raise or lower the front relative to the back, but the cross weights won't change. If one front or rear tire is worn more than the others it will make a difference, but so long as you have the same size tires on each axle you will be fine.

Don't worry about it.