BMW 640i xDrive tire size
The most common factory tire size for the BMW 640i xDrive is 245/35R20 front, 275/30R20 rear, on 11 of the 11 year and trim fits listed. Each year below lists the sizes its trims were built with (2013 to 2018). Pick your year and trim to see the tires that fit.
BMW 640i xDrive tire sizes by year
20185 sizes · 10 trims
20175 sizes · 10 trims
20165 sizes · 10 trims
20155 sizes · 10 trims
Check your own tire
A trim can be sold with more than one wheel size. The size printed on the sidewall of your current tire, or on the placard in the driver's door jamb, is the one your vehicle has.