Tire sizes / 225/45R21
225/45R21 Tire Size
225/45R21
- 225: tread width of 225 mm (8.9 in)
- 45: sidewall height is 45% of the width, about 101 mm
- R: radial construction
- 21: fits a 21-inch wheel
Dimensions
| Overall diameter | 29 in (736 mm) |
|---|---|
| Section width | 8.9 in (225 mm) |
| Sidewall height | 4.0 in (101 mm) |
| Wheel diameter | 21 in |
| Revolutions per mile | about 696 |
Nominal figures calculated from the size code. Real tires vary a little by brand and tread depth.
Cars that came with 225/45R21 tires
Factory fitment only, from owner's manuals. Many other cars can run this size; check with a tire shop before changing size.