Best 225/45R20 tires
No tire in this size has a score yet — too few owner reviews and tests. 2 vehicle models use it from the factory. See the nearest sizes with rated tires.
TireWheelGuide may earn a commission from purchases made through these links.
Nearest sizes with rated tires
Within 3% of the overall diameter, on the same rim first. Check the sizes approved for your vehicle before you switch.
225/45R20 in inches
| Overall diameter | 28″ |
| Section width | 8.9″ |
| Rim diameter | 20″ |
| Sidewall height | 101 mm |
| Circumference | 87.9″ |
| Revolutions per mile | 721 |
Revolutions per mile: how many times the tire turns in one mile, the count your speedometer is calibrated to.
What rims fit 225/45R20 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
The rim diameter is fixed at 20″; only the width can change. Rims are usually 70–90% as wide as the tire’s 8.9″ section width.
Fitted from the factory on rims: 20x7.5.
Some factory fitments sit outside that range: 20x9, 20x11. Check the rim width approved for your car before you buy.
Cars that use 225/45R20
Fitted from the factory on at least one trim. Models with the most trims and years in this size come first.
225/45R20 — what does it mean?
| Parameter | Meaning |
|---|---|
| 225 | The first number is the section width — 225 mm, or about 8.9 inches across the widest part of the tire. |
| 45 | The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 101 mm tall. |
| R20 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 20-inch wheel. |