275/30R19 tire size
275/30R19 is a metric size: 25.5" tall, 10.8" wide, on a 19" rim — about a 25.5x11.00R19. The sidewall is 3.2" and the tire turns 791 times per mile.
275/30R19 specs
| Overall diameter (height) | 25.50" · 648 mm |
|---|---|
| Section width | 10.83" · 275 mm |
| Sidewall height | 3.25" · 83 mm (30% of width) |
| Rim diameter | 19" |
| Circumference | 80.10" · 2.034 m |
| Revolutions per mile | 791 (492 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" | +4.79% | -30 mm | 62.9 mph | compare → |
| 235/40R19 common | 26.40" | +3.55% | -40 mm | 62.1 mph | compare → |
| 255/35R19 common | 26.03" | +2.08% | -20 mm | 61.3 mph | compare → |
| 275/35R19 common | 26.58" | +4.25% | 0 mm | 62.5 mph | compare → |
| 245/35R19 common | 25.75" | +1.00% | -30 mm | 60.6 mph | compare → |
| 225/40R19 common | 26.09" | +2.32% | -50 mm | 61.4 mph | compare → |
| 235/35R19 common | 25.48" | -0.08% | -40 mm | 60.0 mph | compare → |
| 265/35R19 common | 26.30" | +3.17% | -10 mm | 61.9 mph | compare → |
| 285/30R19 | 25.73" | +0.93% | +10 mm | 60.6 mph | compare → |
| 225/35R19 | 25.20" | -1.16% | -50 mm | 59.3 mph | compare → |
| 305/30R19 | 26.20" | +2.78% | +30 mm | 61.7 mph | compare → |
| 255/30R19 | 25.02" | -1.85% | -20 mm | 58.9 mph | compare → |
| 295/30R19 | 25.97" | +1.85% | +20 mm | 61.1 mph | compare → |
| 325/30R19 | 26.68" | +4.63% | +50 mm | 62.8 mph | compare → |
| 265/30R19 | 25.26" | -0.93% | -10 mm | 59.4 mph | compare → |
| 315/30R19 | 26.44" | +3.71% | +40 mm | 62.2 mph | compare → |
| 245/30R19 | 24.79" | -2.78% | -30 mm | 58.3 mph | calculate → |
| 315/25R19 | 25.20" | -1.16% | +40 mm | 59.3 mph | calculate → |
| 295/25R19 | 24.81" | -2.70% | +20 mm | 58.4 mph | calculate → |
| 195/50R19 | 26.68" | +4.63% | -80 mm | 62.8 mph | calculate → |
| 215/35R19 | 24.93" | -2.24% | -60 mm | 58.7 mph | calculate → |
| 235/30R19 | 24.55" | -3.71% | -40 mm | 57.8 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" | +0.86% | -30 mm | 60.5 mph | compare → |
| 235/40R18 common | 25.40" | -0.37% | -40 mm | 59.8 mph | compare → |
| 275/35R18 common | 25.58" | +0.32% | 0 mm | 60.2 mph | compare → |
| 265/35R18 common | 25.30" | -0.76% | -10 mm | 59.5 mph | compare → |
| 215/45R18 common | 25.62" | +0.48% | -60 mm | 60.3 mph | compare → |
| 315/30R18 | 25.44" | -0.22% | +40 mm | 59.9 mph | compare → |
| 235/30R20 | 25.55" | +0.22% | -40 mm | 60.1 mph | compare → |
| 285/25R20 | 25.61" | +0.45% | +10 mm | 60.3 mph | calculate → |
| 225/30R20 | 25.31" | -0.71% | -50 mm | 59.6 mph | calculate → |
| 275/25R20 | 25.41" | -0.32% | 0 mm | 59.8 mph | calculate → |
| 155/60R18 | 25.32" | -0.68% | -120 mm | 59.6 mph | calculate → |
| 205/45R18 | 25.26" | -0.91% | -70 mm | 59.5 mph | calculate → |
Try another size against 275/30R19
Questions
What size is 275/30R19 in inches?
275/30R19 is about 25.5" tall and 10.8" wide on a 19-inch rim — roughly a 25.5x11.00R19 in inch sizing.
What does 275/30R19 mean?
275 mm section width, sidewall 30% of the width (3.25"), radial construction, 19-inch rim.
What tire sizes are equivalent to 275/30R19?
On the same 19" rim, within 3% of the diameter: 235/35R19 (-0.08%), 265/30R19 (-0.93%), 285/30R19 (+0.93%), 245/35R19 (+1.00%), 225/35R19 (-1.16%), 315/25R19 (-1.16%).
How many revolutions per mile does a 275/30R19 tire make?
About 791 revolutions per mile (circumference 80.1").
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.