355/60R20 tire size
355/60R20 is a metric size: 36.8" tall, 14.0" wide, on a 20" rim — about a 37x14.00R20. The sidewall is 8.4" and the tire turns 548 times per mile.
355/60R20 specs
| Overall diameter (height) | 36.77" · 934 mm |
|---|---|
| Section width | 13.98" · 355 mm |
| Sidewall height | 8.39" · 213 mm (60% of width) |
| Rim diameter | 20" |
| Circumference | 115.52" · 2.934 m |
| Revolutions per mile | 548 (341 per km) |
| Inch (flotation) equivalent | 37x14.00R20 |
Equivalent sizes on a 20" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 35x12.50R20 common | 35.00" | -4.82% | -37 mm | 57.1 mph | calculate → |
| 37x12.50R20 | 37.00" | +0.62% | -37 mm | 60.4 mph | calculate → |
| 37x13.50R20 | 37.00" | +0.62% | -12 mm | 60.4 mph | calculate → |
| 295/65R20 | 35.10" | -4.55% | -60 mm | 57.3 mph | calculate → |
| 325/60R20 | 35.35" | -3.85% | -30 mm | 57.7 mph | calculate → |
| 35x11.50R20 | 35.00" | -4.82% | -63 mm | 57.1 mph | calculate → |
| 35x13.50R20 | 35.00" | -4.82% | -12 mm | 57.1 mph | calculate → |
| 38x13.50R20 | 38.00" | +3.34% | -12 mm | 62.0 mph | calculate → |
| 38x15.50R20 | 38.00" | +3.34% | +39 mm | 62.0 mph | calculate → |
| 37x11.50R20 | 37.00" | +0.62% | -63 mm | 60.4 mph | calculate → |
| 35x15.50R20 | 35.00" | -4.82% | +39 mm | 57.1 mph | calculate → |
| 36x13.50R20 | 36.00" | -2.10% | -12 mm | 58.7 mph | calculate → |
| 38x14.50R20 | 38.00" | +3.34% | +13 mm | 62.0 mph | calculate → |
| 37x14.50R20 | 37.00" | +0.62% | +13 mm | 60.4 mph | calculate → |
| 375/55R20 | 36.24" | -1.45% | +20 mm | 59.1 mph | calculate → |
| 36x15.50R20 | 36.00" | -2.10% | +39 mm | 58.7 mph | calculate → |
| 285/70R20 | 35.71" | -2.89% | -70 mm | 58.3 mph | calculate → |
| 38x11.50R20 | 38.00" | +3.34% | -63 mm | 62.0 mph | calculate → |
| 38.5x13.50R20 | 38.50" | +4.70% | -12 mm | 62.8 mph | calculate → |
| 38.5x14.50R20 | 38.50" | +4.70% | +13 mm | 62.8 mph | calculate → |
| 35x13.00R20 | 35.00" | -4.82% | -25 mm | 57.1 mph | calculate → |
| 35x14.50R20 | 35.00" | -4.82% | +13 mm | 57.1 mph | calculate → |
| 345/60R20 | 36.30" | -1.28% | -10 mm | 59.2 mph | calculate → |
Try another size against 355/60R20
Questions
What size is 355/60R20 in inches?
355/60R20 is about 36.8" tall and 14.0" wide on a 20-inch rim — roughly a 37x14.00R20 in inch sizing.
What does 355/60R20 mean?
355 mm section width, sidewall 60% of the width (8.39"), radial construction, 20-inch rim.
What tire sizes are equivalent to 355/60R20?
On the same 20" rim, within 3% of the diameter: 37x11.50R20 (+0.62%), 37x12.50R20 (+0.62%), 37x13.50R20 (+0.62%), 37x14.50R20 (+0.62%), 345/60R20 (-1.28%), 375/55R20 (-1.45%).
How many revolutions per mile does a 355/60R20 tire make?
About 548 revolutions per mile (circumference 115.5").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.