325/50R20 tire size in inches
A 325/50R20 tire measures
32.8" tall × 12.8" wide
6.40" sidewall on a 20" wheel. 615 revolutions per mile.
325/50R20 means a tire 325 mm wide, with sidewalls 50% as tall as the tire is wide (163 mm), radial construction (R), for a 20 inch wheel.
325/50R20 specs
| Overall diameter (height) | 32.80 inches (833 mm) |
|---|---|
| Section width | 12.80 inches (325 mm) |
| Sidewall height | 6.40 inches (163 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 103.0 inches (2,617 mm) |
| Revolutions per mile | 615 |
| Revolutions per kilometer | 382 |
| Approximate rim width | 9.5" to 11.0" |
| In inches (flotation style) | 32.8x12.8R20 |
| 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 325/50R20 on a 20" wheel
These 20" sizes are within 3% of 325/50R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 295/55R20 | 32.78" | 11.61" | −0.1% | 60.0 mph | Compare |
| 275/60R20 | 32.99" | 10.83" | +0.6% | 60.4 mph | Compare |
| 33x12.50R20 | 33.00" | 12.50" | +0.6% | 60.4 mph | Compare |
| 355/45R20 | 32.58" | 13.98" | −0.7% | 59.6 mph | Compare |
| 255/65R20 | 33.05" | 10.04" | +0.8% | 60.5 mph | Compare |
| 245/65R20 | 32.54" | 9.65" | −0.8% | 59.5 mph | Compare |
| 265/60R20 | 32.52" | 10.43" | −0.8% | 59.5 mph | Compare |
| 335/50R20 | 33.19" | 13.19" | +1.2% | 60.7 mph | Compare |
| 315/50R20 | 32.40" | 12.40" | −1.2% | 59.3 mph | Compare |
| 305/55R20 | 33.21" | 12.01" | +1.3% | 60.8 mph | Compare |
| 285/55R20 | 32.34" | 11.22" | −1.4% | 59.2 mph | Compare |
| 345/45R20 | 32.22" | 13.58" | −1.7% | 59.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 305/45R22 | 22" | 32.81" | 0.0% | Compare |
| 275/50R22 | 22" | 32.83" | +0.1% | Compare |
| 285/75R16 | 16" | 32.83" | +0.1% | Compare |
| 265/85R15 | 15" | 32.74" | −0.2% | Compare |
| 345/40R22 | 22" | 32.87" | +0.2% | Compare |
| 335/45R21 | 21" | 32.87" | +0.2% | Compare |
| 315/60R18 | 18" | 32.88" | +0.3% | Compare |
| 285/70R17 | 17" | 32.71" | −0.3% | Compare |
| 265/80R16 | 16" | 32.69" | −0.3% | Compare |
| 275/55R21 | 21" | 32.91" | +0.3% | Compare |
| 315/35R24 | 24" | 32.68" | −0.3% | Compare |
| 275/40R24 | 24" | 32.66" | −0.4% | Compare |
One size up or down
- 315/50R20narrower: 32.4" × 12.4"
- 335/50R20wider: 33.2" × 13.2"
- 325/45R20lower profile: 31.5" × 12.8"
- 325/55R20taller sidewall: 34.1" × 12.8"
Compare 325/50R20 with another size
Questions
- How tall is a 325/50R20 tire?
- A 325/50R20 tire is 32.8 inches tall (833 mm), calculated from the size. It is 12.8 inches wide with 6.4 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 325/50R20 mean?
- 325/50R20 means a tire 325 mm wide, with sidewalls 50% as tall as the tire is wide (163 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 325/50R20 tire make?
- About 615 revolutions per mile, based on a circumference of 103.0 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 325/50R20 tire?
- Roughly 9.5" to 11.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 295/55R20 instead of 325/50R20?
- 295/55R20 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.