Tire sizes / 285/45R21
285/45R21 Tire Size
285/45R21
- 285: tread width of 285 mm (11.2 in)
- 45: sidewall height is 45% of the width, about 128 mm
- R: radial construction
- 21: fits a 21-inch wheel
Dimensions
| Overall diameter | 31.1 in (790 mm) |
|---|---|
| Section width | 11.2 in (285 mm) |
| Sidewall height | 5.0 in (128 mm) |
| Wheel diameter | 21 in |
| Revolutions per mile | about 649 |
Nominal figures calculated from the size code. Real tires vary a little by brand and tread depth.
Cars that came with 285/45R21 tires
| Vehicle | Years |
|---|---|
| Hyundai Ioniq 9 | |
| Kia EV9 |
Factory fitment only, from owner's manuals. Many other cars can run this size; check with a tire shop before changing size.