You should be fine... it will just vary between 1-2 mi (speed). But will vary about 100-200 miles on your odometer I think (over time)

Don't go larger than 17" otherwise you will need to get it recalibrated.... which involes opening up the transmission and playing on one of the gears.

just my advice

*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* 1997 Ford Contour GL 2.0L 4Cyl 133,000+ - Cold Air Intake - White Strobes in grille *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*