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265/50R20 tire size in inches
265/50R20 is 30.43" tall and 10.43" wide, and fits a 20" rim. In flotation (inch) sizing that is roughly 30.4x10.4R20.
265/50R20 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 30.43" | 773 mm |
| Section width | 10.43" | 265 mm |
| Sidewall height | 5.22" | 132.5 mm |
| Rim diameter | 20" | 508.0 mm |
| Circumference | 95.6" | 2428 mm |
| Revolutions per mile | 663 | |
| Aspect ratio | 50% (sidewall is 50% of the width) | |
Drawn to scale
Among the 131 sizes for 20" wheels on this site, 265/50R20 is #44 by height (shortest: 225/30R20, tallest: 365/85R20).
What people compare 265/50R20 with
Real comparisons drivers search for, worked out against 265/50R20:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 275/55R20 | +1.48" (+4.86%) | +0.40" | +0.73" | 57.2 mph |
| 255/55R20 | +0.61" (+2%) | -0.39" | +0.30" | 58.8 mph |
| 255/50R20 | -0.39" (-1.28%) | -0.39" | -0.20" | 60.8 mph |
| 265/60R20 | +2.09" (+6.87%) | 0.00" | +1.04" | 56.1 mph |
| 275/45R20 | -0.69" (-2.27%) | +0.40" | -0.35" | 61.4 mph |
| 245/50R20 | -0.78" (-2.56%) | -0.78" | -0.40" | 61.6 mph |
| 275/60R20 | +2.56" (+8.41%) | +0.40" | +1.28" | 55.3 mph |
| 275/50R20 | +0.40" (+1.31%) | +0.40" | +0.19" | 59.2 mph |
How the 265/50R20 numbers are worked out
The size code reads as 265 mm section width, 50% aspect ratio, R for radial construction and 20-inch wheel.
- Sidewall = 265 × 50% = 132.5 mm = 5.22"
- Diameter = 20" + 2 × 5.22" = 30.43"
- Circumference = π × 30.43" = 95.6"
- Revs per mile = 63,360" ÷ 95.6" = 663
Sizes that can replace 265/50R20 on a 20" wheel
Within 3% of 30.43". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 295/45R20 | 30.45" | 11.61" | +0.07% | 60 mph |
| 245/55R20 | 30.61" | 9.65" | +0.59% | 59.6 mph |
| 235/55R20 | 30.18" | 9.25" | -0.82% | 60.5 mph |
| 285/45R20 | 30.10" | 11.22" | -1.08% | 60.7 mph |
| 305/45R20 | 30.81" | 12.01" | +1.25% | 59.3 mph |
| 255/50R20 | 30.04" | 10.04" | -1.28% | 60.8 mph |
| 275/50R20 | 30.83" | 10.83" | +1.31% | 59.2 mph |
| 315/40R20 | 29.92" | 12.40" | -1.68% | 61 mph |
| 255/55R20 | 31.04" | 10.04" | +2% | 58.8 mph |
| 235/60R20 | 31.10" | 9.25" | +2.2% | 58.7 mph |
| 275/45R20 | 29.74" | 10.83" | -2.27% | 61.4 mph |
| 315/45R20 | 31.16" | 12.40" | +2.4% | 58.6 mph |
One size wider or narrower
- Narrower: 255/50R20 — 10.04" wide, 30.04" tall
- Wider: 275/50R20 — 10.83" wide, 30.83" tall
Same height on a different wheel size
- 255/80R14 14" (-1.22%)
- 325/60R15 15" (-0.26%)
- 265/75R15 15" (+0.72%)
- 275/70R15 15" (-0.89%)
- 285/70R15 15" (+0.92%)
- 235/85R15 15" (+0.99%)
- 295/65R15 15" (-1.08%)
- 255/75R15 15" (-1.22%)
- 315/60R15 15" (-1.81%)
- 305/60R16 16" (-0.07%)
Questions about 265/50R20
How tall is a 265/50R20 tire in inches?
A 265/50R20 tire is 30.43 inches (773 mm) tall: the 20-inch rim plus two sidewalls of 5.22 inches each.
Is 265/50R20 a 30 inch tire?
Yes. At 30.43 inches tall it is commonly called a 30-inch tire.
How many revolutions per mile does a 265/50R20 make?
About 663 revolutions per mile, based on a calculated circumference of 95.6 inches.
What size can replace 265/50R20?
295/45R20 is the closest match on a 20" rim (+0.07% height). Check load index, speed rating and clearance first.
Compare 265/50R20 against any other size with the tire size calculator.