I have been looking and cant really find a solid answer but I am looking at getting a set of wheels that are 18x8 with a 60 mm lip in the front wrapped in 225/40/18 tires and an 18x9 with a 120mm lip in the rear wrapped in 265/35/18 tires and need to know what offset i need so i dont have to roll the fenders. Any help wopuld be great. Thanks