stock. An offset of +30 is borderline on the front w/ a 18x8.5 and it will probably come down to variations in the actual tire tread width since it varies by manufacturer. Heating the liner up and trying to push more clearance as a good method but you need to get it fairly hot. Or loosen the screws and clips holding the liner in place, pushing on the liner to try and buy yourself a few extra mm's before tightening the screws back up.
1993 Nissan 300ZX Slicktop (Oxford Gray Metallic) 1991 Nissan 300ZX Slicktop Track-Star 1992 Nissan Skyline GT-R (Gunmetal Gray) - Long Live the Z and Godzirra! - "Love cars. Love people. Love life." - Mr. K.