33x12.50R20 tire size in inches
A 33x12.50R20 tire measures
33.0" tall × 12.5" wide
6.50" sidewall on a 20" wheel. 611 revolutions per mile.
33x12.50R20 is a flotation (inch) size: 33 inches tall, 12.50 inches wide, for a 20 inch wheel. The R means radial construction.
33x12.50R20 specs
| Overall diameter (height) | 33.00 inches (838 mm) |
|---|---|
| Section width | 12.50 inches (318 mm) |
| Sidewall height | 6.50 inches (165 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 103.7 inches (2,633 mm) |
| Revolutions per mile | 611 |
| Revolutions per kilometer | 380 |
| Approximate rim width | 8.5" to 11.0" |
| Aspect ratio (equivalent) | 52% |
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 33x12.50R20 on a 20" wheel
These 20" sizes are within 3% of 33x12.50R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 275/60R20 | 32.99" | 10.83" | 0.0% | 60.0 mph | Compare |
| 255/65R20 | 33.05" | 10.04" | +0.2% | 60.1 mph | Compare |
| 335/50R20 | 33.19" | 13.19" | +0.6% | 60.3 mph | Compare |
| 325/50R20 | 32.80" | 12.80" | −0.6% | 59.6 mph | Compare |
| 305/55R20 | 33.21" | 12.01" | +0.6% | 60.4 mph | Compare |
| 295/55R20 | 32.78" | 11.61" | −0.7% | 59.6 mph | Compare |
| 355/45R20 | 32.58" | 13.98" | −1.3% | 59.2 mph | Compare |
| 245/65R20 | 32.54" | 9.65" | −1.4% | 59.2 mph | Compare |
| 285/60R20 | 33.46" | 11.22" | +1.4% | 60.8 mph | Compare |
| 265/60R20 | 32.52" | 10.43" | −1.5% | 59.1 mph | Compare |
| 265/65R20 | 33.56" | 10.43" | +1.7% | 61.0 mph | Compare |
| 345/50R20 | 33.58" | 13.58" | +1.8% | 61.1 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 33x12.50R15 | 15" | 33.00" | 0.0% | Compare |
| 33x12.50R16 | 16" | 33.00" | 0.0% | Compare |
| 33x12.50R17 | 17" | 33.00" | 0.0% | Compare |
| 33x12.50R18 | 18" | 33.00" | 0.0% | Compare |
| 33x12.50R22 | 22" | 33.00" | 0.0% | Compare |
| 305/50R21 | 21" | 33.01" | 0.0% | Compare |
| 285/40R24 | 24" | 32.98" | −0.1% | Compare |
| 355/50R19 | 19" | 32.98" | −0.1% | Compare |
| 325/35R24 | 24" | 32.96" | −0.1% | Compare |
| 255/55R22 | 22" | 33.04" | +0.1% | Compare |
| 285/80R15 | 15" | 32.95" | −0.1% | Compare |
| 255/75R18 | 18" | 33.06" | +0.2% | Compare |
Compare 33x12.50R20 with another size
Questions
- How tall is a 33x12.50R20 tire?
- A 33x12.50R20 tire is 33.0 inches tall (838 mm), calculated from the size. It is 12.5 inches wide with 6.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 33x12.50R20 mean?
- 33x12.50R20 is a flotation (inch) size: 33 inches tall, 12.50 inches wide, for a 20 inch wheel. The R means radial construction.
- How many revolutions per mile does a 33x12.50R20 tire make?
- About 611 revolutions per mile, based on a circumference of 103.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 33x12.50R20 tire?
- Roughly 8.5" to 11.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 275/60R20 instead of 33x12.50R20?
- 275/60R20 is −0.01 inches (0.0%) in overall diameter, so at an indicated 60 mph you would be doing 60.0 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.