245/30R19 tire size
245/30R19 is a metric size: 24.8" tall, 9.6" wide, on a 19" rim — about a 25x9.50R19. The sidewall is 2.9" and the tire turns 814 times per mile.
245/30R19 specs
| Overall diameter (height) | 24.79" · 630 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 2.89" · 74 mm (30% of width) |
| Rim diameter | 19" |
| Circumference | 77.87" · 1.978 m |
| Revolutions per mile | 814 (506 per km) |
| Inch (flotation) equivalent | 25x9.50R19 |
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 | |
|---|---|---|---|---|---|
| 245/35R19 common | 25.75" | +3.89% | 0 mm | 62.3 mph | calculate → |
| 235/35R19 common | 25.48" | +2.78% | -10 mm | 61.7 mph | calculate → |
| 285/30R19 | 25.73" | +3.81% | +40 mm | 62.3 mph | calculate → |
| 225/35R19 | 25.20" | +1.67% | -20 mm | 61.0 mph | calculate → |
| 255/30R19 | 25.02" | +0.95% | +10 mm | 60.6 mph | calculate → |
| 295/30R19 | 25.97" | +4.76% | +50 mm | 62.9 mph | calculate → |
| 275/30R19 | 25.50" | +2.86% | +30 mm | 61.7 mph | calculate → |
| 265/30R19 | 25.26" | +1.91% | +20 mm | 61.1 mph | calculate → |
| 295/25R19 | 24.81" | +0.08% | +50 mm | 60.0 mph | calculate → |
| 315/25R19 | 25.20" | +1.67% | +70 mm | 61.0 mph | calculate → |
| 215/35R19 | 24.93" | +0.56% | -30 mm | 60.3 mph | calculate → |
| 235/30R19 | 24.55" | -0.95% | -10 mm | 59.4 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 | |
|---|---|---|---|---|---|
| 255/35R18 common | 25.03" | +0.97% | +10 mm | 60.6 mph | calculate → |
| 245/35R18 common | 24.75" | -0.14% | 0 mm | 59.9 mph | calculate → |
| 215/40R18 | 24.77" | -0.06% | -30 mm | 60.0 mph | calculate → |
| 295/30R18 | 24.97" | +0.73% | +50 mm | 60.4 mph | calculate → |
| 285/30R18 | 24.73" | -0.22% | +40 mm | 59.9 mph | calculate → |
Try another size against 245/30R19
Questions
What size is 245/30R19 in inches?
245/30R19 is about 24.8" tall and 9.6" wide on a 19-inch rim — roughly a 25x9.50R19 in inch sizing.
What does 245/30R19 mean?
245 mm section width, sidewall 30% of the width (2.89"), radial construction, 19-inch rim.
What tire sizes are equivalent to 245/30R19?
On the same 19" rim, within 3% of the diameter: 295/25R19 (+0.08%), 215/35R19 (+0.56%), 235/30R19 (-0.95%), 255/30R19 (+0.95%), 225/35R19 (+1.67%), 315/25R19 (+1.67%).
How many revolutions per mile does a 245/30R19 tire make?
About 814 revolutions per mile (circumference 77.9").
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.