Looking to downsize to 18" rims(for an LT model) and the tires recommended are 245/55/18. Not a lot of selection(and a little too much rubber showing). What do you guys/gals think about dropping to a 245/45/18? Will it drop the stance noticeably? Will it void GM's warranty? And is 245/40/18 too close to the road to be worthwhile? Just looking at options/opinions. Thanks in advance..
..btw, car is still in Canada..