natedog

After 32K miles, it's time for new tires. I'm upgrading to Michelin PSS sized 275/40/19. I've only heard great reviews, so I can't wait to see how much of an improvement they are over the P Zeros. I know that size is a little wide for stock Brembo wheels, but I plan on going with 9.5 in wide Forgestars in the near future. Being 16mm taller than stock, I want to get my speedo recalibrated. I don't want to buy a tuner just yet, so can I get a shop to do it? Any idea how much it would run? Also, I'll probably switch the tires to the new wheels in a year or so, any issue mounting them multiple times?

Thanks in advance.

Norm Peterson

I know it's been a while, but for only a 2% change in indicated speed I wouldn't bother. It only amounts to a 1.5 mph error at 65 (you'd be reading 63.5 @ 65 - if your OE speedometer was spot-on to begin with, which it almost certainly isn't).

When you re-install the tires on wider wheels, the effect is much smaller and not worth worrying about at all.


Norm

Luke@tirerack

I agree with Norm