When it's time to change tires on your F-Sport do you stay staggered or get all same sized tires? What's the advantage/disadvantage of both? I have a RWD if it matters.

 

I'm planning to go same sized so I can rotate the tires. However I don't know what size would be good, if I should choose 18 or 17s to get a same size setup if anyone can help

 

The F sport RWD wheels have different widths. 18x8 F 18x8.5 R, so i wouldn't recommend doing that.

 

The AWD versions also have the same 225/255 staggered setup.

OP: If you want a square setup, I think the safest bet would be 225 tires all around. I believe that Lexus at one point offered a square 225/45R17 setup for the non-F-sport IS250s.