345/40R19 tire size in inches
A 345/40R19 tire measures
29.9" tall × 13.6" wide
5.43" sidewall on a 19" wheel. 675 revolutions per mile.
345/40R19 means a tire 345 mm wide, with sidewalls 40% as tall as the tire is wide (138 mm), radial construction (R), for a 19 inch wheel.
345/40R19 specs
| Overall diameter (height) | 29.87 inches (759 mm) |
|---|---|
| Section width | 13.58 inches (345 mm) |
| Sidewall height | 5.43 inches (138 mm) |
| Wheel (rim) diameter | 19 inches |
| Circumference | 93.8 inches (2,383 mm) |
| Revolutions per mile | 675 |
| Revolutions per kilometer | 420 |
| Approximate rim width | 11.5" to 13.0" |
| In inches (flotation style) | 29.9x13.6R19 |
| Aspect ratio | 40% |
Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.
Sizes that can replace 345/40R19 on a 19" wheel
These 19" sizes are within 3% of 345/40R19's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 275/50R19 | 29.83" | 10.83" | −0.1% | 59.9 mph | Compare |
| 305/45R19 | 29.81" | 12.01" | −0.2% | 59.9 mph | Compare |
| 215/65R19 | 30.00" | 8.46" | +0.5% | 60.3 mph | Compare |
| 255/55R19 | 30.04" | 10.04" | +0.6% | 60.4 mph | Compare |
| 235/60R19 | 30.10" | 9.25" | +0.8% | 60.5 mph | Compare |
| 225/60R19 | 29.63" | 8.86" | −0.8% | 59.5 mph | Compare |
| 245/55R19 | 29.61" | 9.65" | −0.9% | 59.5 mph | Compare |
| 315/45R19 | 30.16" | 12.40" | +1.0% | 60.6 mph | Compare |
| 335/40R19 | 29.55" | 13.19" | −1.1% | 59.4 mph | Compare |
| 355/40R19 | 30.18" | 13.98" | +1.1% | 60.6 mph | Compare |
| 285/50R19 | 30.22" | 11.22" | +1.2% | 60.7 mph | Compare |
| 205/65R19 | 29.49" | 8.07" | −1.3% | 59.2 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 335/45R18 | 18" | 29.87" | 0.0% | Compare |
| 225/50R21 | 21" | 29.86" | 0.0% | Compare |
| 235/75R16 | 16" | 29.88" | 0.0% | Compare |
| 285/35R22 | 22" | 29.85" | 0.0% | Compare |
| 215/70R18 | 18" | 29.85" | −0.1% | Compare |
| 275/55R18 | 18" | 29.91" | +0.1% | Compare |
| 335/30R22 | 22" | 29.91" | +0.2% | Compare |
| 315/40R20 | 20" | 29.92" | +0.2% | Compare |
| 295/25R24 | 24" | 29.81" | −0.2% | Compare |
| 235/80R15 | 15" | 29.80" | −0.2% | Compare |
| 295/60R16 | 16" | 29.94" | +0.2% | Compare |
| 355/35R20 | 20" | 29.78" | −0.3% | Compare |
One size up or down
- 335/40R19narrower: 29.6" × 13.2"
- 355/40R19wider: 30.2" × 14.0"
- 345/35R19lower profile: 28.5" × 13.6"
- 345/45R19taller sidewall: 31.2" × 13.6"
Compare 345/40R19 with another size
Questions
- How tall is a 345/40R19 tire?
- A 345/40R19 tire is 29.9 inches tall (759 mm), calculated from the size. It is 13.6 inches wide with 5.4 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 345/40R19 mean?
- 345/40R19 means a tire 345 mm wide, with sidewalls 40% as tall as the tire is wide (138 mm), radial construction (R), for a 19 inch wheel.
- How many revolutions per mile does a 345/40R19 tire make?
- About 675 revolutions per mile, based on a circumference of 93.8 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 345/40R19 tire?
- Roughly 11.5" to 13.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 275/50R19 instead of 345/40R19?
- 275/50R19 is −0.04 inches (−0.1%) in overall diameter, so at an indicated 60 mph you would be doing 59.9 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.