Forgive me if this is a dumb tire pressure q :

[LIRS6]

When changing tire sizes, do you maintain the recommended tire pressure, or adjust in some way;

were 225/50/16 in rear (Porsche says 34 psi), now 245/45/16.... ??

thanks !

[Jim Richards]

I would keep the same pressures as a first approximation, but I'd try to find out what the tire manufacturer recommends.

[Goth]

I run 30 to 32 psi in the back. Same size tire as yours on a 9 in rim, 3.2 motor.