Back space of wheels lately has really got my interest,especialy in x series,trying to fit 8 inch wide rims on my xe is not as easy as it sounds,back in the day you could buy 14x8 12 slots from bob jane with zero ET or 4 inch backspace, which would work on the front,as the 14x8 hotwires had a -6 ET,and did not fit correct ,well they did but came within 1mm of hitting suspension bits,generaly speaking most ford factory wheels in the 6 to 7 inch have a backspace of 3 and 3/4 or +6 ET,0 ET will work but cutting it fine,+ 4 or 5 i would prefer.