325/35R20 tire size in inches
A 325/35R20 tire measures
29.0" tall × 12.8" wide
4.48" sidewall on a 20" wheel. 696 revolutions per mile.
325/35R20 means a tire 325 mm wide, with sidewalls 35% as tall as the tire is wide (114 mm), radial construction (R), for a 20 inch wheel.
325/35R20 specs
| Overall diameter (height) | 28.96 inches (736 mm) |
|---|---|
| Section width | 12.80 inches (325 mm) |
| Sidewall height | 4.48 inches (114 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 91.0 inches (2,311 mm) |
| Revolutions per mile | 696 |
| Revolutions per kilometer | 433 |
| Approximate rim width | 10.5" to 12.0" |
| In inches (flotation style) | 29.0x12.8R20 |
| Aspect ratio | 35% |
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 325/35R20 on a 20" wheel
These 20" sizes are within 3% of 325/35R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 285/40R20 | 28.98" | 11.22" | +0.1% | 60.0 mph | Compare |
| 255/45R20 | 29.04" | 10.04" | +0.3% | 60.2 mph | Compare |
| 225/50R20 | 28.86" | 8.86" | −0.3% | 59.8 mph | Compare |
| 335/35R20 | 29.23" | 13.19" | +1.0% | 60.6 mph | Compare |
| 245/45R20 | 28.68" | 9.65" | −1.0% | 59.4 mph | Compare |
| 315/35R20 | 28.68" | 12.40" | −1.0% | 59.4 mph | Compare |
| 235/50R20 | 29.25" | 9.25" | +1.0% | 60.6 mph | Compare |
| 275/40R20 | 28.66" | 10.83" | −1.0% | 59.4 mph | Compare |
| 295/40R20 | 29.29" | 11.61" | +1.2% | 60.7 mph | Compare |
| 215/55R20 | 29.31" | 8.46" | +1.2% | 60.7 mph | Compare |
| 265/45R20 | 29.39" | 10.43" | +1.5% | 60.9 mph | Compare |
| 215/50R20 | 28.46" | 8.46" | −1.7% | 59.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 235/70R16 | 16" | 28.95" | 0.0% | Compare |
| 295/30R22 | 22" | 28.97" | 0.0% | Compare |
| 225/45R21 | 21" | 28.97" | +0.1% | Compare |
| 355/25R22 | 22" | 28.99" | +0.1% | Compare |
| 275/60R16 | 16" | 28.99" | +0.1% | Compare |
| 315/40R19 | 19" | 28.92" | −0.1% | Compare |
| 205/80R16 | 16" | 28.91" | −0.1% | Compare |
| 335/30R21 | 21" | 28.91" | −0.1% | Compare |
| 215/65R18 | 18" | 29.00" | +0.2% | Compare |
| 275/55R17 | 17" | 28.91" | −0.2% | Compare |
| 305/50R17 | 17" | 29.01" | +0.2% | Compare |
| 255/25R24 | 24" | 29.02" | +0.2% | Compare |
One size up or down
- 315/35R20narrower: 28.7" × 12.4"
- 335/35R20wider: 29.2" × 13.2"
- 325/30R20lower profile: 27.7" × 12.8"
- 325/40R20taller sidewall: 30.2" × 12.8"
Compare 325/35R20 with another size
Questions
- How tall is a 325/35R20 tire?
- A 325/35R20 tire is 29.0 inches tall (736 mm), calculated from the size. It is 12.8 inches wide with 4.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 325/35R20 mean?
- 325/35R20 means a tire 325 mm wide, with sidewalls 35% as tall as the tire is wide (114 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 325/35R20 tire make?
- About 696 revolutions per mile, based on a circumference of 91.0 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 325/35R20 tire?
- Roughly 10.5" to 12.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 285/40R20 instead of 325/35R20?
- 285/40R20 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.