235/65R19 tire size
235/65R19 is a metric size: 31.0" tall, 9.3" wide, on a 19" rim — about a 31x9.50R19. The sidewall is 6.0" and the tire turns 650 times per mile.
235/65R19 specs
| Overall diameter (height) | 31.03" · 788 mm |
|---|---|
| Section width | 9.25" · 235 mm |
| Sidewall height | 6.01" · 153 mm (65% of width) |
| Rim diameter | 19" |
| Circumference | 97.48" · 2.476 m |
| Revolutions per mile | 650 (404 per km) |
| Inch (flotation) equivalent | 31x9.50R19 |
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 | |
|---|---|---|---|---|---|
| 245/55R19 common | 29.61" | -4.57% | +10 mm | 57.3 mph | calculate → |
| 255/55R19 common | 30.04" | -3.17% | +20 mm | 58.1 mph | calculate → |
| 255/60R19 common | 31.05" | +0.06% | +20 mm | 60.0 mph | calculate → |
| 275/55R19 | 30.91" | -0.38% | +40 mm | 59.8 mph | calculate → |
| 265/55R19 | 30.48" | -1.78% | +30 mm | 58.9 mph | calculate → |
| 275/50R19 | 29.83" | -3.87% | +40 mm | 57.7 mph | calculate → |
| 255/65R19 | 32.05" | +3.30% | +20 mm | 62.0 mph | calculate → |
| 235/60R19 | 30.10" | -2.98% | 0 mm | 58.2 mph | calculate → |
| 165/90R19 | 30.69" | -1.08% | -70 mm | 59.4 mph | calculate → |
| 175/80R19 | 30.02" | -3.24% | -60 mm | 58.1 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 | |
|---|---|---|---|---|---|
| 255/55R20 common | 31.04" | +0.05% | +20 mm | 60.0 mph | calculate → |
| 255/65R18 common | 31.05" | +0.08% | +20 mm | 60.0 mph | calculate → |
| 275/50R20 common | 30.83" | -0.65% | +40 mm | 59.6 mph | calculate → |
| 285/50R20 | 31.22" | +0.62% | +50 mm | 60.4 mph | calculate → |
| 275/60R18 | 30.99" | -0.11% | +40 mm | 59.9 mph | calculate → |
| 235/60R20 | 31.10" | +0.24% | 0 mm | 60.1 mph | calculate → |
| 31x18.00R20 | 31.00" | -0.09% | +222 mm | 59.9 mph | calculate → |
| 235/70R18 | 30.95" | -0.24% | 0 mm | 59.9 mph | calculate → |
| 305/45R20 | 30.81" | -0.71% | +70 mm | 59.6 mph | calculate → |
Try another size against 235/65R19
Questions
What size is 235/65R19 in inches?
235/65R19 is about 31.0" tall and 9.3" wide on a 19-inch rim — roughly a 31x9.50R19 in inch sizing.
What does 235/65R19 mean?
235 mm section width, sidewall 65% of the width (6.01"), radial construction, 19-inch rim.
What tire sizes are equivalent to 235/65R19?
On the same 19" rim, within 3% of the diameter: 255/60R19 (+0.06%), 275/55R19 (-0.38%), 165/90R19 (-1.08%), 265/55R19 (-1.78%), 235/60R19 (-2.98%), 255/55R19 (-3.17%).
How many revolutions per mile does a 235/65R19 tire make?
About 650 revolutions per mile (circumference 97.5").
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.