ok, i bought some 18'' voxx wheels from craigslist assuming theyre gonna fit my 2006 cobalt LS. now im not so sure. the bolt pattern is the same and the wheel fits, but im not sure if the offset is gonna work... i coulnt find the stock offset, but on the new wheels its +45... i wanted to make sure itll work before i go buy tires i cant use. any addvice will help. thanks everyone.