Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-15 | 315/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.51 (622.5) | 24.92 (633) | 0.41 (10.5) 1.7% |
| Width inches (mm) | 13.58 (345) | 12.4 (315) | -1.18 (-30) -8.7% |
| Circum. inches (mm) | 76.99 (1955.64) | 78.29 (1988.63) | 1.3 (32.99) 1.7% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 4.96 (126) | 0.21 (5.25) 4.3% |
| Revolutions per mile (km) | 822.92 (511.34) | 809.27 (502.86) | -13.65 (-8.48) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.73 km/h) |
| 25 mph (40.23 km/h) | 25.42 mph (40.91 km/h) |
| 30 mph (48.28 km/h) | 30.51 mph (49.09 km/h) |
| 35 mph (56.33 km/h) | 35.59 mph (57.28 km/h) |
| 40 mph (64.37 km/h) | 40.67 mph (65.46 km/h) |
| 45 mph (72.42 km/h) | 45.76 mph (73.64 km/h) |
| 50 mph (80.47 km/h) | 50.84 mph (81.82 km/h) |
| 55 mph (88.51 km/h) | 55.93 mph (90.01 km/h) |
| 60 mph (96.56 km/h) | 61.01 mph (98.19 km/h) |
| 65 mph (104.61 km/h) | 66.1 mph (106.37 km/h) |
| 70 mph (112.65 km/h) | 71.18 mph (114.55 km/h) |
| 75 mph (120.7 km/h) | 76.27 mph (122.74 km/h) |
| 80 mph (128.75 km/h) | 81.35 mph (130.92 km/h) |
| 85 mph (136.79 km/h) | 86.43 mph (139.1 km/h) |
| 90 mph (144.84 km/h) | 91.52 mph (147.28 km/h) |
| 95 mph (152.89 km/h) | 96.6 mph (155.47 km/h) |
| 100 mph (160.93 km/h) | 101.69 mph (163.65 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2059 | 2392 | 2576 | 2690 | 2813 | 2901 | 2997 | 3111 | 3269 | 3427 | 3602 | 3742 | 3996 | 4277 | 4496 | 4636 | 4715 | 5004 | 5407 | 6284 |
Better Fuel Economy Factory Ratios Increased Power
