255/65R19 tire size
255/65R19 is a metric size: 32.1" tall, 10.0" wide, on a 19" rim — about a 32x10.00R19. The sidewall is 6.5" and the tire turns 629 times per mile.
255/65R19 specs
| Overall diameter (height) | 32.05" · 814 mm |
|---|---|
| Section width | 10.04" · 255 mm |
| Sidewall height | 6.53" · 166 mm (65% of width) |
| Rim diameter | 19" |
| Circumference | 100.69" · 2.558 m |
| Revolutions per mile | 629 (391 per km) |
| Inch (flotation) equivalent | 32x10.00R19 |
Equivalent sizes on a 19" 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 | |
|---|---|---|---|---|---|
| 255/60R19 common | 31.05" | -3.13% | 0 mm | 58.1 mph | calculate → |
| 275/55R19 | 30.91" | -3.56% | +20 mm | 57.9 mph | calculate → |
| 265/55R19 | 30.48" | -4.91% | +10 mm | 57.1 mph | calculate → |
| 235/65R19 | 31.03" | -3.19% | -20 mm | 58.1 mph | calculate → |
| 165/90R19 | 30.69" | -4.24% | -90 mm | 57.5 mph | calculate → |
Plus / minus sizing: 18" and 20" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 275/65R18 common | 32.07" | +0.07% | +20 mm | 60.0 mph | calculate → |
| 275/55R20 common | 31.91" | -0.44% | +20 mm | 59.7 mph | calculate → |
| 255/70R18 common | 32.06" | +0.01% | 0 mm | 60.0 mph | calculate → |
| 285/55R20 common | 32.34" | +0.91% | +30 mm | 60.5 mph | calculate → |
| 305/50R20 | 32.01" | -0.14% | +50 mm | 59.9 mph | calculate → |
| 255/60R20 | 32.05" | -0.01% | 0 mm | 60.0 mph | calculate → |
Try another size against 255/65R19
Questions
What size is 255/65R19 in inches?
255/65R19 is about 32.1" tall and 10.0" wide on a 19-inch rim — roughly a 32x10.00R19 in inch sizing.
What does 255/65R19 mean?
255 mm section width, sidewall 65% of the width (6.53"), radial construction, 19-inch rim.
What tire sizes are equivalent to 255/65R19?
On the same 19" rim, within 3% of the diameter: 255/60R19 (-3.13%), 235/65R19 (-3.19%), 275/55R19 (-3.56%), 165/90R19 (-4.24%), 265/55R19 (-4.91%).
How many revolutions per mile does a 255/65R19 tire make?
About 629 revolutions per mile (circumference 100.7").
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.