Hey guys, I'm a new owner of a '06 LT that seems to be well optioned w/heated leather and On Star. Its my first large domestic sedan and will serve as my commuter. First things on my list are a detail, oil change and tires. As far as rubber goes, girl's got some fender gap! I'm not interested in lowering it but has anyone moved from a 225 55r17 to a 225 60r17 and has pics to share? Also any pain points I should be looking for as far as maintenance or problem areas? I'm sitting at 112k, grandmother owned and the only damage I've found is a hood dent from a deer and a parking lot door crease.