I am 99% sure the 06 Grand Touring Coupe Rays Wheels are the following sizes:

F - 18x9 (stock tires 245/40)
R - 19x10 (stock tires 265/35)

How large could I go on tire size both front and back before I get buldge or have concerns with rubbing?

From what I have heard I can go as large as 265 up front and 305 rear. What are the implications on clearance with this setup?

Also will increasing size affect the TPS?

Thanks for the help!

 

Bump. Anyone? Please help, need the advice. ECHO, Echo, echo.

 

Well, most people that upsize on those width rims go with that size in front and 275/35 in rear, which is a closer match to stock diameters anyway. I dunno why they put a 265 back there. You could go 295/30, but you'll prob have to roll the fenders.

 

I recommend OEM width +20mm.

 

have to get bigger on the back...since there are hardly any tire options for 265...275 sounds good.

Just wondering why you say to get bigger on the sidewalls?