245/60R20 tire size
245/60R20 is a metric size: 31.6" tall, 9.6" wide, on a 20" rim — about a 31.5x9.50R20. The sidewall is 5.8" and the tire turns 639 times per mile.
245/60R20 specs
| Overall diameter (height) | 31.57" · 802 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 5.79" · 147 mm (60% of width) |
| Rim diameter | 20" |
| Circumference | 99.20" · 2.520 m |
| Revolutions per mile | 639 (397 per km) |
| Inch (flotation) equivalent | 31.5x9.50R20 |
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 | |
|---|---|---|---|---|---|
| 275/55R20 common | 31.91" | +1.06% | +30 mm | 60.6 mph | compare → |
| 275/60R20 common | 32.99" | +4.49% | +30 mm | 62.7 mph | compare → |
| 255/50R20 common | 30.04" | -4.86% | +10 mm | 57.1 mph | compare → |
| 265/50R20 common | 30.43" | -3.62% | +20 mm | 57.8 mph | compare → |
| 255/55R20 common | 31.04" | -1.68% | +10 mm | 59.0 mph | compare → |
| 235/55R20 common | 30.18" | -4.43% | -10 mm | 57.3 mph | compare → |
| 265/60R20 common | 32.52" | +2.99% | +20 mm | 61.8 mph | compare → |
| 285/55R20 common | 32.34" | +2.43% | +40 mm | 61.5 mph | compare → |
| 275/50R20 common | 30.83" | -2.37% | +30 mm | 58.6 mph | compare → |
| 33x12.50R20 common | 33.00" | +4.51% | +73 mm | 62.7 mph | compare → |
| 295/55R20 | 32.78" | +3.80% | +50 mm | 62.3 mph | compare → |
| 285/50R20 | 31.22" | -1.12% | +40 mm | 59.3 mph | compare → |
| 305/50R20 | 32.01" | +1.37% | +60 mm | 60.8 mph | compare → |
| 285/45R20 | 30.10" | -4.68% | +40 mm | 57.2 mph | compare → |
| 295/45R20 | 30.45" | -3.55% | +50 mm | 57.9 mph | compare → |
| 255/60R20 | 32.05" | +1.50% | +10 mm | 60.9 mph | compare → |
| 235/60R20 | 31.10" | -1.50% | -10 mm | 59.1 mph | calculate → |
| 33x13.50R20 | 33.00" | +4.51% | +98 mm | 62.7 mph | calculate → |
| 33x11.50R20 | 33.00" | +4.51% | +47 mm | 62.7 mph | calculate → |
| 265/55R20 | 31.48" | -0.31% | +20 mm | 59.8 mph | calculate → |
| 31x18.00R20 | 31.00" | -1.82% | +212 mm | 58.9 mph | calculate → |
| 305/45R20 | 30.81" | -2.43% | +60 mm | 58.5 mph | calculate → |
| 325/50R20 | 32.80" | +3.87% | +80 mm | 62.3 mph | calculate → |
| 33x12.00R20 | 33.00" | +4.51% | +60 mm | 62.7 mph | calculate → |
| 33x22.00R20 | 33.00" | +4.51% | +314 mm | 62.7 mph | calculate → |
| 295/50R20 | 31.61" | +0.12% | +50 mm | 60.1 mph | calculate → |
| 315/50R20 | 32.40" | +2.62% | +70 mm | 61.6 mph | calculate → |
| 33x14.50R20 | 33.00" | +4.51% | +123 mm | 62.7 mph | calculate → |
Plus / minus sizing: 19" and 21" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
Try another size against 245/60R20
Questions
What size is 245/60R20 in inches?
245/60R20 is about 31.6" tall and 9.6" wide on a 20-inch rim — roughly a 31.5x9.50R20 in inch sizing.
What does 245/60R20 mean?
245 mm section width, sidewall 60% of the width (5.79"), radial construction, 20-inch rim.
What tire sizes are equivalent to 245/60R20?
On the same 20" rim, within 3% of the diameter: 295/50R20 (+0.12%), 265/55R20 (-0.31%), 275/55R20 (+1.06%), 285/50R20 (-1.12%), 305/50R20 (+1.37%), 235/60R20 (-1.50%).
How many revolutions per mile does a 245/60R20 tire make?
About 639 revolutions per mile (circumference 99.2").
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.