these are +38 rear and +40 front I ordered them like this because it is much easier to space than cut the wheel back...the "effective offset" is +13 rear(10.5" wheel) and +15 front (9.5" wheel) this puts the tire right out there next to the sheet metal but no rubbing (and the car is STUPID low....(or SEMA low)... there is room for up to a 12" wide wheel 335 or 315rear tire in the back and 11"rim/ 295/305 in the front imo Coilovers in the rear would cut this down by 1" for spring clearance.
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