325/60R20 tire size
325/60R20 is a metric size: 35.4" tall, 12.8" wide, on a 20" rim — about a 35.5x13.00R20. The sidewall is 7.7" and the tire turns 570 times per mile.
325/60R20 specs
| Overall diameter (height) | 35.35" · 898 mm |
|---|---|
| Section width | 12.80" · 325 mm |
| Sidewall height | 7.68" · 195 mm (60% of width) |
| Rim diameter | 20" |
| Circumference | 111.07" · 2.821 m |
| Revolutions per mile | 570 (354 per km) |
| Inch (flotation) equivalent | 35.5x13.00R20 |
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 | |
|---|---|---|---|---|---|
| 275/65R20 common | 34.07" | -3.62% | -50 mm | 57.8 mph | compare → |
| 35x12.50R20 common | 35.00" | -1.00% | -7 mm | 59.4 mph | compare → |
| 295/60R20 | 33.94" | -4.01% | -30 mm | 57.6 mph | compare → |
| 37x12.50R20 | 37.00" | +4.65% | -7 mm | 62.8 mph | compare → |
| 37x13.50R20 | 37.00" | +4.65% | +18 mm | 62.8 mph | compare → |
| 295/65R20 | 35.10" | -0.72% | -30 mm | 59.6 mph | compare → |
| 285/65R20 | 34.59" | -2.17% | -40 mm | 58.7 mph | compare → |
| 35x11.50R20 | 35.00" | -1.00% | -33 mm | 59.4 mph | compare → |
| 35x13.50R20 | 35.00" | -1.00% | +18 mm | 59.4 mph | compare → |
| 315/60R20 | 34.88" | -1.34% | -10 mm | 59.2 mph | calculate → |
| 37x11.50R20 | 37.00" | +4.65% | -33 mm | 62.8 mph | calculate → |
| 35x15.50R20 | 35.00" | -1.00% | +69 mm | 59.4 mph | calculate → |
| 36x13.50R20 | 36.00" | +1.83% | +18 mm | 61.1 mph | calculate → |
| 285/70R20 | 35.71" | +1.00% | -40 mm | 60.6 mph | calculate → |
| 35x13.00R20 | 35.00" | -1.00% | +5 mm | 59.4 mph | calculate → |
| 35x14.50R20 | 35.00" | -1.00% | +43 mm | 59.4 mph | calculate → |
| 36x15.50R20 | 36.00" | +1.83% | +69 mm | 61.1 mph | calculate → |
| 375/55R20 | 36.24" | +2.51% | +50 mm | 61.5 mph | calculate → |
| 305/60R20 | 34.41" | -2.67% | -20 mm | 58.4 mph | calculate → |
| 34x11.50R20 | 34.00" | -3.83% | -33 mm | 57.7 mph | calculate → |
| 37x14.50R20 | 37.00" | +4.65% | +43 mm | 62.8 mph | calculate → |
| 345/60R20 | 36.30" | +2.67% | +20 mm | 61.6 mph | calculate → |
| 355/50R20 | 33.98" | -3.90% | +30 mm | 57.7 mph | calculate → |
| 355/60R20 | 36.77" | +4.01% | +30 mm | 62.4 mph | calculate → |
Try another size against 325/60R20
Questions
What size is 325/60R20 in inches?
325/60R20 is about 35.4" tall and 12.8" wide on a 20-inch rim — roughly a 35.5x13.00R20 in inch sizing.
What does 325/60R20 mean?
325 mm section width, sidewall 60% of the width (7.68"), radial construction, 20-inch rim.
What tire sizes are equivalent to 325/60R20?
On the same 20" rim, within 3% of the diameter: 295/65R20 (-0.72%), 285/70R20 (+1.00%), 35x11.50R20 (-1.00%), 35x12.50R20 (-1.00%), 35x13.50R20 (-1.00%), 35x13.00R20 (-1.00%).
How many revolutions per mile does a 325/60R20 tire make?
About 570 revolutions per mile (circumference 111.1").
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.