here, you will need these numbers to calibrate it to the factory specs...

the mesuarement is from the bottom lip of the rim to the bottom of the fender...
_______________ 17"____18"____19"____20"___these are wheel sizes
front axle_______685____697____710____722
rear axle________687____699____712____724
sport fr_________670____682____695____707
sport rr_________672____684____697____709