345/50R20 tire size in inches
A 345/50R20 tire measures
33.6" tall × 13.6" wide
6.79" sidewall on a 20" wheel. 601 revolutions per mile.
345/50R20 means a tire 345 mm wide, with sidewalls 50% as tall as the tire is wide (173 mm), radial construction (R), for a 20 inch wheel.
345/50R20 specs
| Overall diameter (height) | 33.58 inches (853 mm) |
|---|---|
| Section width | 13.58 inches (345 mm) |
| Sidewall height | 6.79 inches (173 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 105.5 inches (2,680 mm) |
| Revolutions per mile | 601 |
| Revolutions per kilometer | 373 |
| Approximate rim width | 10.0" to 11.5" |
| In inches (flotation style) | 33.6x13.6R20 |
| Aspect ratio | 50% |
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 345/50R20 on a 20" wheel
These 20" sizes are within 3% of 345/50R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 265/65R20 | 33.56" | 10.43" | −0.1% | 60.0 mph | Compare |
| 315/55R20 | 33.64" | 12.40" | +0.2% | 60.1 mph | Compare |
| 285/60R20 | 33.46" | 11.22" | −0.4% | 59.8 mph | Compare |
| 295/60R20 | 33.94" | 11.61" | +1.1% | 60.6 mph | Compare |
| 305/55R20 | 33.21" | 12.01" | −1.1% | 59.3 mph | Compare |
| 355/50R20 | 33.98" | 13.98" | +1.2% | 60.7 mph | Compare |
| 335/50R20 | 33.19" | 13.19" | −1.2% | 59.3 mph | Compare |
| 275/65R20 | 34.07" | 10.83" | +1.5% | 60.9 mph | Compare |
| 325/55R20 | 34.07" | 12.80" | +1.5% | 60.9 mph | Compare |
| 255/65R20 | 33.05" | 10.04" | −1.6% | 59.1 mph | Compare |
| 33x12.50R20 | 33.00" | 12.50" | −1.7% | 59.0 mph | Compare |
| 275/60R20 | 32.99" | 10.83" | −1.8% | 58.9 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 285/65R19 | 19" | 33.59" | 0.0% | Compare |
| 355/45R21 | 21" | 33.58" | 0.0% | Compare |
| 305/40R24 | 24" | 33.61" | +0.1% | Compare |
| 305/65R18 | 18" | 33.61" | +0.1% | Compare |
| 295/50R22 | 22" | 33.61" | +0.1% | Compare |
| 265/75R18 | 18" | 33.65" | +0.2% | Compare |
| 325/45R22 | 22" | 33.52" | −0.2% | Compare |
| 335/55R19 | 19" | 33.51" | −0.2% | Compare |
| 345/35R24 | 24" | 33.51" | −0.2% | Compare |
| 265/55R22 | 22" | 33.48" | −0.3% | Compare |
| 285/70R18 | 18" | 33.71" | +0.4% | Compare |
| 265/85R16 | 16" | 33.74" | +0.5% | Compare |
One size up or down
- 335/50R20narrower: 33.2" × 13.2"
- 355/50R20wider: 34.0" × 14.0"
- 345/45R20lower profile: 32.2" × 13.6"
- 345/55R20taller sidewall: 34.9" × 13.6"
Compare 345/50R20 with another size
Questions
- How tall is a 345/50R20 tire?
- A 345/50R20 tire is 33.6 inches tall (853 mm), calculated from the size. It is 13.6 inches wide with 6.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 345/50R20 mean?
- 345/50R20 means a tire 345 mm wide, with sidewalls 50% as tall as the tire is wide (173 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 345/50R20 tire make?
- About 601 revolutions per mile, based on a circumference of 105.5 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 345/50R20 tire?
- Roughly 10.0" to 11.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 265/65R20 instead of 345/50R20?
- 265/65R20 is −0.02 inches (−0.1%) 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.