I am currently running 30x9.5R15's on 8" factory rims on my 02' Sport that are about worn out. I am thinking about up sizing to 31x10.5R15's. My use is primarily a daily driver with some mild weekend off-roading. My dilemma is.....I don't want to loose much, if any, performance in terms of acceleration, ride, etc. I live in the UP of Michigan and have to deal with quite a bit of snow in the winter as well. I don't want an aggressive mud tire either and all terrain or all weather would seem my best choice. Any feedback from those who have faced this same situation would be greatly appreciated....thanks!