255/50R19 tire size
255/50R19 is a metric size: 29.0" tall, 10.0" wide, on a 19" rim — about a 29x10.00R19. The sidewall is 5.0" and the tire turns 695 times per mile.
255/50R19 specs
| Overall diameter (height) | 29.04" · 738 mm |
|---|---|
| Section width | 10.04" · 255 mm |
| Sidewall height | 5.02" · 127 mm (50% of width) |
| Rim diameter | 19" |
| Circumference | 91.23" · 2.317 m |
| Revolutions per mile | 695 (432 per km) |
| Inch (flotation) equivalent | 29x10.00R19 |
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 | |
|---|---|---|---|---|---|
| 235/55R19 common | 29.18" | +0.47% | -20 mm | 60.3 mph | compare → |
| 245/45R19 common | 27.68" | -4.68% | -10 mm | 57.2 mph | compare → |
| 255/45R19 common | 28.04" | -3.46% | 0 mm | 57.9 mph | compare → |
| 225/55R19 common | 28.74" | -1.02% | -30 mm | 59.4 mph | compare → |
| 275/40R19 common | 27.66" | -4.75% | +20 mm | 57.2 mph | compare → |
| 235/50R19 common | 28.25" | -2.71% | -20 mm | 58.4 mph | compare → |
| 245/55R19 common | 29.61" | +1.97% | -10 mm | 61.2 mph | compare → |
| 255/55R19 common | 30.04" | +3.46% | 0 mm | 62.1 mph | compare → |
| 265/50R19 common | 29.43" | +1.36% | +10 mm | 60.8 mph | compare → |
| 245/50R19 common | 28.65" | -1.36% | -10 mm | 59.2 mph | compare → |
| 285/40R19 | 27.98" | -3.66% | +30 mm | 57.8 mph | compare → |
| 275/45R19 | 28.74" | -1.02% | +20 mm | 59.4 mph | compare → |
| 285/45R19 | 29.10" | +0.20% | +30 mm | 60.1 mph | compare → |
| 275/50R19 | 29.83" | +2.71% | +20 mm | 61.6 mph | compare → |
| 265/55R19 | 30.48" | +4.95% | +10 mm | 63.0 mph | compare → |
| 295/40R19 | 28.29" | -2.58% | +40 mm | 58.5 mph | compare → |
| 265/45R19 | 28.39" | -2.24% | +10 mm | 58.7 mph | calculate → |
| 235/60R19 | 30.10" | +3.66% | -20 mm | 62.2 mph | calculate → |
| 295/45R19 | 29.45" | +1.42% | +40 mm | 60.9 mph | calculate → |
| 345/35R19 | 28.51" | -1.83% | +90 mm | 58.9 mph | calculate → |
| 315/40R19 | 28.92" | -0.41% | +60 mm | 59.8 mph | calculate → |
| 155/80R19 | 28.76" | -0.95% | -100 mm | 59.4 mph | calculate → |
| 175/80R19 | 30.02" | +3.39% | -80 mm | 62.0 mph | calculate → |
| 315/35R19 | 27.68" | -4.68% | +60 mm | 57.2 mph | calculate → |
| 145/80R19 | 28.13" | -3.12% | -110 mm | 58.1 mph | calculate → |
| 225/50R19 | 27.86" | -4.07% | -30 mm | 57.6 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 | |
|---|---|---|---|---|---|
| 235/60R18 common | 29.10" | +0.22% | -20 mm | 60.1 mph | compare → |
| 255/45R20 common | 29.04" | -0.01% | 0 mm | 60.0 mph | compare → |
| 255/55R18 common | 29.04" | +0.01% | 0 mm | 60.0 mph | compare → |
| 295/40R20 | 29.29" | +0.87% | +40 mm | 60.5 mph | compare → |
| 285/40R20 | 28.98" | -0.22% | +30 mm | 59.9 mph | compare → |
| 235/50R20 | 29.25" | +0.73% | -20 mm | 60.4 mph | compare → |
| 155/90R18 | 28.98" | -0.19% | -100 mm | 59.9 mph | calculate → |
| 325/35R20 | 28.96" | -0.28% | +70 mm | 59.8 mph | calculate → |
| 285/50R18 | 29.22" | +0.62% | +30 mm | 60.4 mph | calculate → |
| 305/45R18 | 28.81" | -0.80% | +50 mm | 59.5 mph | calculate → |
| 29x15.00R20 | 29.00" | -0.14% | +126 mm | 59.9 mph | calculate → |
| 29x18.00R20 | 29.00" | -0.14% | +202 mm | 59.9 mph | calculate → |
Try another size against 255/50R19
Questions
What size is 255/50R19 in inches?
255/50R19 is about 29.0" tall and 10.0" wide on a 19-inch rim — roughly a 29x10.00R19 in inch sizing.
What does 255/50R19 mean?
255 mm section width, sidewall 50% of the width (5.02"), radial construction, 19-inch rim.
What tire sizes are equivalent to 255/50R19?
On the same 19" rim, within 3% of the diameter: 285/45R19 (+0.20%), 315/40R19 (-0.41%), 235/55R19 (+0.47%), 155/80R19 (-0.95%), 225/55R19 (-1.02%), 275/45R19 (-1.02%).
How many revolutions per mile does a 255/50R19 tire make?
About 695 revolutions per mile (circumference 91.2").
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.