Tire sizes / 255/50R21

255/50R21 Tire Size

255/50R21

Dimensions

Overall diameter31 in (788 mm)
Section width10 in (255 mm)
Sidewall height5.0 in (128 mm)
Wheel diameter21 in
Revolutions per mileabout 650

Nominal figures calculated from the size code. Real tires vary a little by brand and tread depth.

Cars that came with 255/50R21 tires

Factory fitment only, from owner's manuals. Many other cars can run this size; check with a tire shop before changing size.