245/55R19 tire size
245/55R19 is a metric size: 29.6" tall, 9.6" wide, on a 19" rim — about a 29.5x9.50R19. The sidewall is 5.3" and the tire turns 681 times per mile.
245/55R19 specs
| Overall diameter (height) | 29.61" · 752 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 5.31" · 135 mm (55% of width) |
| Rim diameter | 19" |
| Circumference | 93.02" · 2.363 m |
| Revolutions per mile | 681 (423 per km) |
| Inch (flotation) equivalent | 29.5x9.50R19 |
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 | |
|---|---|---|---|---|---|
| 235/55R19 common | 29.18" | -1.46% | -10 mm | 59.1 mph | compare → |
| 255/50R19 common | 29.04" | -1.93% | +10 mm | 58.8 mph | compare → |
| 225/55R19 common | 28.74" | -2.93% | -20 mm | 58.2 mph | compare → |
| 235/50R19 common | 28.25" | -4.59% | -10 mm | 57.2 mph | compare → |
| 255/55R19 common | 30.04" | +1.46% | +10 mm | 60.9 mph | compare → |
| 255/60R19 common | 31.05" | +4.85% | +10 mm | 62.9 mph | compare → |
| 265/50R19 common | 29.43" | -0.60% | +20 mm | 59.6 mph | compare → |
| 245/50R19 common | 28.65" | -3.26% | 0 mm | 58.0 mph | compare → |
| 275/55R19 | 30.91" | +4.39% | +30 mm | 62.6 mph | compare → |
| 275/45R19 | 28.74" | -2.93% | +30 mm | 58.2 mph | compare → |
| 285/45R19 | 29.10" | -1.73% | +40 mm | 59.0 mph | compare → |
| 275/50R19 | 29.83" | +0.73% | +30 mm | 60.4 mph | compare → |
| 265/55R19 | 30.48" | +2.93% | +20 mm | 61.8 mph | compare → |
| 295/40R19 | 28.29" | -4.45% | +50 mm | 57.3 mph | compare → |
| 235/60R19 | 30.10" | +1.66% | -10 mm | 61.0 mph | calculate → |
| 265/45R19 | 28.39" | -4.12% | +20 mm | 57.5 mph | calculate → |
| 295/45R19 | 29.45" | -0.53% | +50 mm | 59.7 mph | calculate → |
| 345/35R19 | 28.51" | -3.72% | +100 mm | 57.8 mph | calculate → |
| 235/65R19 | 31.03" | +4.79% | -10 mm | 62.9 mph | calculate → |
| 175/80R19 | 30.02" | +1.40% | -70 mm | 60.8 mph | calculate → |
| 315/40R19 | 28.92" | -2.33% | +70 mm | 58.6 mph | calculate → |
| 155/80R19 | 28.76" | -2.86% | -90 mm | 58.3 mph | calculate → |
| 165/90R19 | 30.69" | +3.66% | -80 mm | 62.2 mph | calculate → |
| 145/80R19 | 28.13" | -4.99% | -100 mm | 57.0 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 | |
|---|---|---|---|---|---|
| 245/60R18 common | 29.57" | -0.12% | 0 mm | 59.9 mph | compare → |
| 245/50R20 common | 29.65" | +0.12% | 0 mm | 60.1 mph | compare → |
| 275/45R20 common | 29.74" | +0.45% | +30 mm | 60.3 mph | compare → |
| 265/45R20 common | 29.39" | -0.74% | +20 mm | 59.6 mph | compare → |
| 305/40R20 | 29.61" | -0.01% | +60 mm | 60.0 mph | compare → |
| 165/90R18 | 29.69" | +0.28% | -80 mm | 60.2 mph | calculate → |
| 325/45R18 | 29.52" | -0.32% | +80 mm | 59.8 mph | calculate → |
| 175/70R20 | 29.65" | +0.12% | -70 mm | 60.1 mph | calculate → |
| 225/65R18 | 29.52" | -0.32% | -20 mm | 59.8 mph | calculate → |
| 265/55R18 | 29.48" | -0.45% | +20 mm | 59.7 mph | calculate → |
Try another size against 245/55R19
Questions
What size is 245/55R19 in inches?
245/55R19 is about 29.6" tall and 9.6" wide on a 19-inch rim — roughly a 29.5x9.50R19 in inch sizing.
What does 245/55R19 mean?
245 mm section width, sidewall 55% of the width (5.31"), radial construction, 19-inch rim.
What tire sizes are equivalent to 245/55R19?
On the same 19" rim, within 3% of the diameter: 295/45R19 (-0.53%), 265/50R19 (-0.60%), 275/50R19 (+0.73%), 175/80R19 (+1.40%), 235/55R19 (-1.46%), 255/55R19 (+1.46%).
How many revolutions per mile does a 245/55R19 tire make?
About 681 revolutions per mile (circumference 93.0").
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.