265/45R20 tire size in inches
A 265/45R20 tire measures
29.4" tall × 10.4" wide
4.69" sidewall on a 20" wheel. 686 revolutions per mile.
265/45R20 means a tire 265 mm wide, with sidewalls 45% as tall as the tire is wide (119 mm), radial construction (R), for a 20 inch wheel.
265/45R20 specs
| Overall diameter (height) | 29.39 inches (747 mm) |
|---|---|
| Section width | 10.43 inches (265 mm) |
| Sidewall height | 4.69 inches (119 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 92.3 inches (2,345 mm) |
| Revolutions per mile | 686 |
| Revolutions per kilometer | 426 |
| Approximate rim width | 8.5" to 10.0" |
| In inches (flotation style) | 29.4x10.4R20 |
| Aspect ratio | 45% |
Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.
Sizes that can replace 265/45R20 on a 20" wheel
These 20" sizes are within 3% of 265/45R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 215/55R20 | 29.31" | 8.46" | −0.3% | 59.8 mph | Compare |
| 295/40R20 | 29.29" | 11.61" | −0.3% | 59.8 mph | Compare |
| 345/35R20 | 29.51" | 13.58" | +0.4% | 60.2 mph | Compare |
| 235/50R20 | 29.25" | 9.25" | −0.5% | 59.7 mph | Compare |
| 335/35R20 | 29.23" | 13.19" | −0.5% | 59.7 mph | Compare |
| 305/40R20 | 29.61" | 12.01" | +0.7% | 60.4 mph | Compare |
| 245/50R20 | 29.65" | 9.65" | +0.9% | 60.5 mph | Compare |
| 225/55R20 | 29.74" | 8.86" | +1.2% | 60.7 mph | Compare |
| 255/45R20 | 29.04" | 10.04" | −1.2% | 59.3 mph | Compare |
| 275/45R20 | 29.74" | 10.83" | +1.2% | 60.7 mph | Compare |
| 355/35R20 | 29.78" | 13.98" | +1.3% | 60.8 mph | Compare |
| 285/40R20 | 28.98" | 11.22" | −1.4% | 59.2 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 215/85R15 | 15" | 29.39" | 0.0% | Compare |
| 355/30R21 | 21" | 29.39" | 0.0% | Compare |
| 245/85R13 | 13" | 29.40" | 0.0% | Compare |
| 225/70R17 | 17" | 29.40" | 0.0% | Compare |
| 235/40R22 | 22" | 29.40" | 0.0% | Compare |
| 315/50R17 | 17" | 29.40" | 0.0% | Compare |
| 305/35R21 | 21" | 29.41" | +0.1% | Compare |
| 275/25R24 | 24" | 29.41" | +0.1% | Compare |
| 245/80R14 | 14" | 29.43" | +0.1% | Compare |
| 265/50R19 | 19" | 29.43" | +0.1% | Compare |
| 265/40R21 | 21" | 29.35" | −0.1% | Compare |
| 285/55R17 | 17" | 29.34" | −0.2% | Compare |
One size up or down
- 255/45R20narrower: 29.0" × 10.0"
- 275/45R20wider: 29.7" × 10.8"
- 265/40R20lower profile: 28.3" × 10.4"
- 265/50R20taller sidewall: 30.4" × 10.4"
Compare 265/45R20 with another size
Questions
- How tall is a 265/45R20 tire?
- A 265/45R20 tire is 29.4 inches tall (747 mm), calculated from the size. It is 10.4 inches wide with 4.7 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 265/45R20 mean?
- 265/45R20 means a tire 265 mm wide, with sidewalls 45% as tall as the tire is wide (119 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 265/45R20 tire make?
- About 686 revolutions per mile, based on a circumference of 92.3 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 265/45R20 tire?
- Roughly 8.5" to 10.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 215/55R20 instead of 265/45R20?
- 215/55R20 is −0.08 inches (−0.3%) in overall diameter, so at an indicated 60 mph you would be doing 59.8 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.