Can anyone help me on my offsets? Some calculaters say 25R and 35F and others say both at 35...35 on the rear seems to decrease outer by 7mm and decrease inner clearance by 19mm from OEM. 25 on the rear would increase outer to an extra 3mm and decrease inner clearance by 9mm...help.

My crossfire is stock...currently has OEM wheels and 295/30ZR19 rears and 225/40ZR18 fronts. Have not had one issue with this combo for the last 35,000 miles.

Changing out to Mandrus Wilhelm's...19x9.5 with either 295/30ZR19 or 305/30ZR19 and 18x8.5 with 235/40ZR18.

Thanks in advance...