275/65R20 tire size
275/65R20 is a metric size: 34.1" tall, 10.8" wide, on a 20" rim — about a 34x11.00R20. The sidewall is 7.0" and the tire turns 592 times per mile.
275/65R20 specs
| Overall diameter (height) | 34.07" · 865 mm |
|---|---|
| Section width | 10.83" · 275 mm |
| Sidewall height | 7.04" · 179 mm (65% of width) |
| Rim diameter | 20" |
| Circumference | 107.05" · 2.719 m |
| Revolutions per mile | 592 (368 per km) |
| Inch (flotation) equivalent | 34x11.00R20 |
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 | |
|---|---|---|---|---|---|
| 275/60R20 common | 32.99" | -3.18% | 0 mm | 58.1 mph | compare → |
| 35x12.50R20 common | 35.00" | +2.72% | +43 mm | 61.6 mph | compare → |
| 265/60R20 common | 32.52" | -4.56% | -10 mm | 57.3 mph | compare → |
| 305/55R20 common | 33.21" | -2.54% | +30 mm | 58.5 mph | compare → |
| 285/60R20 common | 33.46" | -1.79% | +10 mm | 58.9 mph | compare → |
| 33x12.50R20 common | 33.00" | -3.15% | +43 mm | 58.1 mph | compare → |
| 295/60R20 | 33.94" | -0.40% | +20 mm | 59.8 mph | compare → |
| 295/55R20 | 32.78" | -3.81% | +20 mm | 57.7 mph | compare → |
| 295/65R20 | 35.10" | +3.00% | +20 mm | 61.8 mph | compare → |
| 285/65R20 | 34.59" | +1.50% | +10 mm | 60.9 mph | compare → |
| 325/60R20 | 35.35" | +3.76% | +50 mm | 62.3 mph | compare → |
| 35x11.50R20 | 35.00" | +2.72% | +17 mm | 61.6 mph | compare → |
| 35x13.50R20 | 35.00" | +2.72% | +68 mm | 61.6 mph | compare → |
| 315/60R20 | 34.88" | +2.37% | +40 mm | 61.4 mph | calculate → |
| 35x15.50R20 | 35.00" | +2.72% | +119 mm | 61.6 mph | calculate → |
| 33x13.50R20 | 33.00" | -3.15% | +68 mm | 58.1 mph | calculate → |
| 33x11.50R20 | 33.00" | -3.15% | +17 mm | 58.1 mph | calculate → |
| 34x11.50R20 | 34.00" | -0.22% | +17 mm | 59.9 mph | calculate → |
| 305/60R20 | 34.41" | +0.98% | +30 mm | 60.6 mph | calculate → |
| 375/45R20 | 33.29" | -2.31% | +100 mm | 58.6 mph | calculate → |
| 35x13.00R20 | 35.00" | +2.72% | +55 mm | 61.6 mph | calculate → |
| 35x14.50R20 | 35.00" | +2.72% | +93 mm | 61.6 mph | calculate → |
| 33x12.00R20 | 33.00" | -3.15% | +30 mm | 58.1 mph | calculate → |
| 33x22.00R20 | 33.00" | -3.15% | +284 mm | 58.1 mph | calculate → |
| 325/50R20 | 32.80" | -3.76% | +50 mm | 57.7 mph | calculate → |
| 285/70R20 | 35.71" | +4.79% | +10 mm | 62.9 mph | calculate → |
| 355/50R20 | 33.98" | -0.29% | +80 mm | 59.8 mph | calculate → |
| 33x14.50R20 | 33.00" | -3.15% | +93 mm | 58.1 mph | calculate → |
| 315/50R20 | 32.40" | -4.91% | +40 mm | 57.1 mph | calculate → |
Try another size against 275/65R20
Questions
What size is 275/65R20 in inches?
275/65R20 is about 34.1" tall and 10.8" wide on a 20-inch rim — roughly a 34x11.00R20 in inch sizing.
What does 275/65R20 mean?
275 mm section width, sidewall 65% of the width (7.04"), radial construction, 20-inch rim.
What tire sizes are equivalent to 275/65R20?
On the same 20" rim, within 3% of the diameter: 34x11.50R20 (-0.22%), 355/50R20 (-0.29%), 295/60R20 (-0.40%), 305/60R20 (+0.98%), 285/65R20 (+1.50%), 285/60R20 (-1.79%).
How many revolutions per mile does a 275/65R20 tire make?
About 592 revolutions per mile (circumference 107.0").
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.