Since the only tire in the stock size are the crappy RE040s, I was thinking of a 235/45 front, 245/45 rear for which there are several choices. Anyone done this and is it a good idea?

T1-S
Pilots
GS-D3
SO-3
Rosso
AVS Sport
AVS 100

 

I wouldn't go down in outside diameter, which is what you'll be doing. If sizes are available, you can go with a 245/45 in front and a 255/45 or 265/45 in the rear.

 

You would be going down in outside diameter which is a bad idea. If these sizes are available you could go with a 245/45 in front and a 255/45 or 265/45 in the rear.