355/25R20 tire size in inches
A 355/25R20 tire measures
27.0" tall × 14.0" wide
3.49" sidewall on a 20" wheel. 747 revolutions per mile.
355/25R20 means a tire 355 mm wide, with sidewalls 25% as tall as the tire is wide (89 mm), radial construction (R), for a 20 inch wheel.
355/25R20 specs
| Overall diameter (height) | 26.99 inches (685 mm) |
|---|---|
| Section width | 13.98 inches (355 mm) |
| Sidewall height | 3.49 inches (89 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 84.8 inches (2,154 mm) |
| Revolutions per mile | 747 |
| Revolutions per kilometer | 464 |
| Approximate rim width | 11.5" to 13.0" |
| In inches (flotation style) | 27.0x14.0R20 |
| Aspect ratio | 25% |
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 355/25R20 on a 20" wheel
These 20" sizes are within 3% of 355/25R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 295/30R20 | 26.97" | 11.61" | −0.1% | 60.0 mph | Compare |
| 255/35R20 | 27.03" | 10.04" | +0.1% | 60.1 mph | Compare |
| 225/40R20 | 27.09" | 8.86" | +0.4% | 60.2 mph | Compare |
| 345/25R20 | 26.79" | 13.58" | −0.7% | 59.6 mph | Compare |
| 215/40R20 | 26.77" | 8.46" | −0.8% | 59.5 mph | Compare |
| 305/30R20 | 27.20" | 12.01" | +0.8% | 60.5 mph | Compare |
| 245/35R20 | 26.75" | 9.65" | −0.9% | 59.5 mph | Compare |
| 285/30R20 | 26.73" | 11.22" | −0.9% | 59.4 mph | Compare |
| 265/35R20 | 27.30" | 10.43" | +1.2% | 60.7 mph | Compare |
| 335/25R20 | 26.59" | 13.19" | −1.5% | 59.1 mph | Compare |
| 235/40R20 | 27.40" | 9.25" | +1.5% | 60.9 mph | Compare |
| 315/30R20 | 27.44" | 12.40" | +1.7% | 61.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 195/65R17 | 17" | 26.98" | 0.0% | Compare |
| 285/40R18 | 18" | 26.98" | 0.0% | Compare |
| 215/65R16 | 16" | 27.00" | +0.1% | Compare |
| 225/45R19 | 19" | 26.97" | −0.1% | Compare |
| 305/25R21 | 21" | 27.00" | +0.1% | Compare |
| 325/35R18 | 18" | 26.96" | −0.1% | Compare |
| 255/25R22 | 22" | 27.02" | +0.1% | Compare |
| 235/70R14 | 14" | 26.95" | −0.1% | Compare |
| 175/80R16 | 16" | 27.02" | +0.1% | Compare |
| 255/30R21 | 21" | 27.02" | +0.1% | Compare |
| 235/65R15 | 15" | 27.03" | +0.1% | Compare |
| 255/40R19 | 19" | 27.03" | +0.2% | Compare |
One size up or down
Compare 355/25R20 with another size
Questions
- How tall is a 355/25R20 tire?
- A 355/25R20 tire is 27.0 inches tall (685 mm), calculated from the size. It is 14.0 inches wide with 3.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 355/25R20 mean?
- 355/25R20 means a tire 355 mm wide, with sidewalls 25% as tall as the tire is wide (89 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 355/25R20 tire make?
- About 747 revolutions per mile, based on a circumference of 84.8 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 355/25R20 tire?
- Roughly 11.5" to 13.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 295/30R20 instead of 355/25R20?
- 295/30R20 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.