345/30R19 tire size
345/30R19 is a metric size: 27.1" tall, 13.6" wide, on a 19" rim — about a 27x13.50R19. The sidewall is 4.1" and the tire turns 743 times per mile.
345/30R19 specs
| Overall diameter (height) | 27.15" · 690 mm |
|---|---|
| Section width | 13.58" · 345 mm |
| Sidewall height | 4.07" · 103 mm (30% of width) |
| Rim diameter | 19" |
| Circumference | 85.29" · 2.166 m |
| Revolutions per mile | 743 (462 per km) |
| Inch (flotation) equivalent | 27x13.50R19 |
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 | |
|---|---|---|---|---|---|
| 245/45R19 common | 27.68" | +1.96% | -100 mm | 61.2 mph | compare → |
| 245/40R19 common | 26.72" | -1.60% | -100 mm | 59.0 mph | compare → |
| 235/40R19 common | 26.40" | -2.76% | -110 mm | 58.3 mph | compare → |
| 255/40R19 common | 27.03" | -0.44% | -90 mm | 59.7 mph | compare → |
| 255/35R19 common | 26.03" | -4.13% | -90 mm | 57.5 mph | compare → |
| 255/45R19 common | 28.04" | +3.26% | -90 mm | 62.0 mph | compare → |
| 275/35R19 common | 26.58" | -2.10% | -70 mm | 58.7 mph | compare → |
| 275/40R19 common | 27.66" | +1.89% | -70 mm | 61.1 mph | compare → |
| 225/40R19 common | 26.09" | -3.92% | -120 mm | 57.7 mph | compare → |
| 225/45R19 common | 26.97" | -0.65% | -120 mm | 59.6 mph | compare → |
| 235/50R19 common | 28.25" | +4.06% | -110 mm | 62.4 mph | compare → |
| 285/35R19 common | 26.85" | -1.09% | -60 mm | 59.3 mph | compare → |
| 235/45R19 common | 27.33" | +0.65% | -110 mm | 60.4 mph | compare → |
| 265/35R19 common | 26.30" | -3.12% | -80 mm | 58.1 mph | compare → |
| 305/30R19 | 26.20" | -3.48% | -40 mm | 57.9 mph | compare → |
| 285/40R19 | 27.98" | +3.05% | -60 mm | 61.8 mph | compare → |
| 295/30R19 | 25.97" | -4.35% | -50 mm | 57.4 mph | compare → |
| 265/40R19 | 27.35" | +0.73% | -80 mm | 60.4 mph | compare → |
| 325/30R19 | 26.68" | -1.74% | -20 mm | 59.0 mph | compare → |
| 295/35R19 | 27.13" | -0.07% | -50 mm | 60.0 mph | compare → |
| 315/30R19 | 26.44" | -2.61% | -30 mm | 58.4 mph | compare → |
| 295/40R19 | 28.29" | +4.21% | -50 mm | 62.5 mph | compare → |
| 305/35R19 | 27.41" | +0.94% | -40 mm | 60.6 mph | calculate → |
| 265/45R19 | 28.39" | +4.57% | -80 mm | 62.7 mph | calculate → |
| 155/70R19 | 27.54" | +1.45% | -190 mm | 60.9 mph | calculate → |
| 355/30R19 | 27.39" | +0.87% | +10 mm | 60.5 mph | calculate → |
| 215/50R19 | 27.46" | +1.16% | -130 mm | 60.7 mph | calculate → |
| 175/60R19 | 27.27" | +0.44% | -170 mm | 60.3 mph | calculate → |
| 195/50R19 | 26.68" | -1.74% | -150 mm | 59.0 mph | calculate → |
| 335/30R19 | 26.91" | -0.87% | -10 mm | 59.5 mph | calculate → |
| 315/35R19 | 27.68" | +1.96% | -30 mm | 61.2 mph | calculate → |
| 225/50R19 | 27.86" | +2.61% | -120 mm | 61.6 mph | calculate → |
| 145/80R19 | 28.13" | +3.63% | -200 mm | 62.2 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 | |
|---|---|---|---|---|---|
| 235/50R18 common | 27.25" | +0.38% | -110 mm | 60.2 mph | compare → |
| 255/35R20 common | 27.03" | -0.45% | -90 mm | 59.7 mph | compare → |
| 255/45R18 common | 27.04" | -0.42% | -90 mm | 59.7 mph | compare → |
| 215/55R18 common | 27.31" | +0.59% | -130 mm | 60.4 mph | compare → |
| 265/35R20 common | 27.30" | +0.57% | -80 mm | 60.3 mph | compare → |
| 295/30R20 | 26.97" | -0.67% | -50 mm | 59.6 mph | compare → |
| 305/30R20 | 27.20" | +0.20% | -40 mm | 60.1 mph | compare → |
| 295/40R18 | 27.29" | +0.52% | -50 mm | 60.3 mph | compare → |
| 265/45R18 | 27.39" | +0.88% | -80 mm | 60.5 mph | compare → |
| 235/40R20 | 27.40" | +0.93% | -110 mm | 60.6 mph | calculate → |
| 285/40R18 | 26.98" | -0.64% | -60 mm | 59.6 mph | calculate → |
| 225/40R20 | 27.09" | -0.23% | -120 mm | 59.9 mph | calculate → |
| 145/80R18 | 27.13" | -0.06% | -200 mm | 60.0 mph | calculate → |
| 165/70R18 | 27.09" | -0.20% | -180 mm | 59.9 mph | calculate → |
| 155/60R20 | 27.32" | +0.64% | -190 mm | 60.4 mph | calculate → |
| 325/35R18 | 26.96" | -0.71% | -20 mm | 59.6 mph | calculate → |
| 195/60R18 | 27.21" | +0.23% | -150 mm | 60.1 mph | calculate → |
Try another size against 345/30R19
Questions
What size is 345/30R19 in inches?
345/30R19 is about 27.1" tall and 13.6" wide on a 19-inch rim — roughly a 27x13.50R19 in inch sizing.
What does 345/30R19 mean?
345 mm section width, sidewall 30% of the width (4.07"), radial construction, 19-inch rim.
What tire sizes are equivalent to 345/30R19?
On the same 19" rim, within 3% of the diameter: 295/35R19 (-0.07%), 175/60R19 (+0.44%), 255/40R19 (-0.44%), 235/45R19 (+0.65%), 225/45R19 (-0.65%), 265/40R19 (+0.73%).
How many revolutions per mile does a 345/30R19 tire make?
About 743 revolutions per mile (circumference 85.3").
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.