345/35R20 tire size in inches
A 345/35R20 tire measures
29.5" tall × 13.6" wide
4.75" sidewall on a 20" wheel. 683 revolutions per mile.
345/35R20 means a tire 345 mm wide, with sidewalls 35% as tall as the tire is wide (121 mm), radial construction (R), for a 20 inch wheel.
345/35R20 specs
| Overall diameter (height) | 29.51 inches (749 mm) |
|---|---|
| Section width | 13.58 inches (345 mm) |
| Sidewall height | 4.75 inches (121 mm) |
| Wheel (rim) diameter | 20 inches |
| Circumference | 92.7 inches (2,355 mm) |
| Revolutions per mile | 683 |
| Revolutions per kilometer | 425 |
| Approximate rim width | 11.5" to 13.0" |
| In inches (flotation style) | 29.5x13.6R20 |
| Aspect ratio | 35% |
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 345/35R20 on a 20" wheel
These 20" sizes are within 3% of 345/35R20's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 305/40R20 | 29.61" | 12.01" | +0.3% | 60.2 mph | Compare |
| 265/45R20 | 29.39" | 10.43" | −0.4% | 59.8 mph | Compare |
| 245/50R20 | 29.65" | 9.65" | +0.5% | 60.3 mph | Compare |
| 215/55R20 | 29.31" | 8.46" | −0.7% | 59.6 mph | Compare |
| 295/40R20 | 29.29" | 11.61" | −0.7% | 59.6 mph | Compare |
| 225/55R20 | 29.74" | 8.86" | +0.8% | 60.5 mph | Compare |
| 275/45R20 | 29.74" | 10.83" | +0.8% | 60.5 mph | Compare |
| 235/50R20 | 29.25" | 9.25" | −0.9% | 59.5 mph | Compare |
| 335/35R20 | 29.23" | 13.19" | −0.9% | 59.4 mph | Compare |
| 355/35R20 | 29.78" | 13.98" | +0.9% | 60.6 mph | Compare |
| 315/40R20 | 29.92" | 12.40" | +1.4% | 60.8 mph | Compare |
| 255/45R20 | 29.04" | 10.04" | −1.6% | 59.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 245/70R16 | 16" | 29.50" | 0.0% | Compare |
| 195/75R18 | 18" | 29.52" | 0.0% | Compare |
| 225/65R18 | 18" | 29.52" | 0.0% | Compare |
| 325/45R18 | 18" | 29.52" | 0.0% | Compare |
| 265/60R17 | 17" | 29.52" | 0.0% | Compare |
| 205/65R19 | 19" | 29.49" | −0.1% | Compare |
| 245/65R17 | 17" | 29.54" | +0.1% | Compare |
| 265/55R18 | 18" | 29.48" | −0.1% | Compare |
| 215/80R16 | 16" | 29.54" | +0.1% | Compare |
| 245/75R15 | 15" | 29.47" | −0.1% | Compare |
| 285/60R16 | 16" | 29.46" | −0.1% | Compare |
| 335/40R19 | 19" | 29.55" | +0.1% | Compare |
One size up or down
- 335/35R20narrower: 29.2" × 13.2"
- 355/35R20wider: 29.8" × 14.0"
- 345/30R20lower profile: 28.1" × 13.6"
- 345/40R20taller sidewall: 30.9" × 13.6"
Compare 345/35R20 with another size
Questions
- How tall is a 345/35R20 tire?
- A 345/35R20 tire is 29.5 inches tall (749 mm), calculated from the size. It is 13.6 inches wide with 4.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 345/35R20 mean?
- 345/35R20 means a tire 345 mm wide, with sidewalls 35% as tall as the tire is wide (121 mm), radial construction (R), for a 20 inch wheel.
- How many revolutions per mile does a 345/35R20 tire make?
- About 683 revolutions per mile, based on a circumference of 92.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 345/35R20 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 305/40R20 instead of 345/35R20?
- 305/40R20 is +0.10 inches (+0.3%) in overall diameter, so at an indicated 60 mph you would be doing 60.2 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.