Im planning on getting some velox pg5s. They weight 12.5lbs. Planning on getting 17X7 f 205 50 17 and 17X71/2 r 225 45 17 since tire rack said that was the perfect fits. I read a forums saying are stock weight about 17 to 18lbs which these wheels will make a different. Will the offset be right and has anyone have them in there car, and did you fell a lot of different.