285/30R19 tire size
285/30R19 is a metric size: 25.7" tall, 11.2" wide, on a 19" rim — about a 25.5x11.00R19. The sidewall is 3.4" and the tire turns 784 times per mile.
285/30R19 specs
| Overall diameter (height) | 25.73" · 654 mm |
|---|---|
| Section width | 11.22" · 285 mm |
| Sidewall height | 3.37" · 86 mm (30% of width) |
| Rim diameter | 19" |
| Circumference | 80.84" · 2.053 m |
| Revolutions per mile | 784 (487 per km) |
| Inch (flotation) equivalent | 25.5x11.00R19 |
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 | |
|---|---|---|---|---|---|
| 245/40R19 common | 26.72" | +3.82% | -40 mm | 62.3 mph | compare → |
| 235/40R19 common | 26.40" | +2.60% | -50 mm | 61.6 mph | compare → |
| 255/35R19 common | 26.03" | +1.15% | -30 mm | 60.7 mph | compare → |
| 275/35R19 common | 26.58" | +3.29% | -10 mm | 62.0 mph | compare → |
| 245/35R19 common | 25.75" | +0.08% | -40 mm | 60.0 mph | compare → |
| 225/40R19 common | 26.09" | +1.38% | -60 mm | 60.8 mph | compare → |
| 235/35R19 common | 25.48" | -0.99% | -50 mm | 59.4 mph | compare → |
| 225/45R19 common | 26.97" | +4.82% | -60 mm | 62.9 mph | compare → |
| 285/35R19 common | 26.85" | +4.36% | 0 mm | 62.6 mph | compare → |
| 265/35R19 common | 26.30" | +2.22% | -20 mm | 61.3 mph | compare → |
| 225/35R19 | 25.20" | -2.07% | -60 mm | 58.8 mph | compare → |
| 305/30R19 | 26.20" | +1.84% | +20 mm | 61.1 mph | compare → |
| 295/30R19 | 25.97" | +0.92% | +10 mm | 60.6 mph | compare → |
| 255/30R19 | 25.02" | -2.75% | -30 mm | 58.3 mph | compare → |
| 325/30R19 | 26.68" | +3.67% | +40 mm | 62.2 mph | compare → |
| 275/30R19 | 25.50" | -0.92% | -10 mm | 59.4 mph | compare → |
| 265/30R19 | 25.26" | -1.84% | -20 mm | 58.9 mph | compare → |
| 315/30R19 | 26.44" | +2.75% | +30 mm | 61.7 mph | compare → |
| 245/30R19 | 24.79" | -3.67% | -40 mm | 57.8 mph | calculate → |
| 315/25R19 | 25.20" | -2.07% | +30 mm | 58.8 mph | calculate → |
| 295/25R19 | 24.81" | -3.60% | +10 mm | 57.8 mph | calculate → |
| 195/50R19 | 26.68" | +3.67% | -90 mm | 62.2 mph | calculate → |
| 215/35R19 | 24.93" | -3.14% | -70 mm | 58.1 mph | calculate → |
| 335/30R19 | 26.91" | +4.59% | +50 mm | 62.8 mph | calculate → |
| 235/30R19 | 24.55" | -4.59% | -50 mm | 57.2 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 | |
|---|---|---|---|---|---|
| 245/40R18 common | 25.72" | -0.06% | -40 mm | 60.0 mph | compare → |
| 225/45R18 common | 25.97" | +0.93% | -60 mm | 60.6 mph | compare → |
| 275/35R18 common | 25.58" | -0.60% | -10 mm | 59.6 mph | compare → |
| 215/45R18 common | 25.62" | -0.44% | -70 mm | 59.7 mph | compare → |
| 285/35R18 | 25.85" | +0.47% | 0 mm | 60.3 mph | compare → |
| 245/30R20 | 25.79" | +0.21% | -40 mm | 60.1 mph | compare → |
| 335/30R18 | 25.91" | +0.70% | +50 mm | 60.4 mph | compare → |
| 235/30R20 | 25.55" | -0.70% | -50 mm | 59.6 mph | compare → |
| 295/25R20 | 25.81" | +0.29% | +10 mm | 60.2 mph | calculate → |
| 285/25R20 | 25.61" | -0.47% | 0 mm | 59.7 mph | calculate → |
Try another size against 285/30R19
Questions
What size is 285/30R19 in inches?
285/30R19 is about 25.7" tall and 11.2" wide on a 19-inch rim — roughly a 25.5x11.00R19 in inch sizing.
What does 285/30R19 mean?
285 mm section width, sidewall 30% of the width (3.37"), radial construction, 19-inch rim.
What tire sizes are equivalent to 285/30R19?
On the same 19" rim, within 3% of the diameter: 245/35R19 (+0.08%), 275/30R19 (-0.92%), 295/30R19 (+0.92%), 235/35R19 (-0.99%), 255/35R19 (+1.15%), 225/40R19 (+1.38%).
How many revolutions per mile does a 285/30R19 tire make?
About 784 revolutions per mile (circumference 80.8").
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.