Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-15 | 345/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.51 (622.5) | 25.87 (657) | 1.36 (34.5) 5.5% |
| Width inches (mm) | 13.58 (345) | 13.58 (345) | 0 (0) 0% |
| Circum. inches (mm) | 76.99 (1955.64) | 81.26 (2064.03) | 4.27 (108.38) 5.5% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 5.43 (138) | 0.68 (17.25) 14.3% |
| Revolutions per mile (km) | 822.92 (511.34) | 779.71 (484.49) | -43.21 (-26.85) -5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.11 mph (33.97 km/h) |
| 25 mph (40.23 km/h) | 26.39 mph (42.46 km/h) |
| 30 mph (48.28 km/h) | 31.66 mph (50.96 km/h) |
| 35 mph (56.33 km/h) | 36.94 mph (59.45 km/h) |
| 40 mph (64.37 km/h) | 42.22 mph (67.94 km/h) |
| 45 mph (72.42 km/h) | 47.49 mph (76.43 km/h) |
| 50 mph (80.47 km/h) | 52.77 mph (84.93 km/h) |
| 55 mph (88.51 km/h) | 58.05 mph (93.42 km/h) |
| 60 mph (96.56 km/h) | 63.33 mph (101.91 km/h) |
| 65 mph (104.61 km/h) | 68.6 mph (110.41 km/h) |
| 70 mph (112.65 km/h) | 73.88 mph (118.9 km/h) |
| 75 mph (120.7 km/h) | 79.16 mph (127.39 km/h) |
| 80 mph (128.75 km/h) | 84.43 mph (135.88 km/h) |
| 85 mph (136.79 km/h) | 89.71 mph (144.38 km/h) |
| 90 mph (144.84 km/h) | 94.99 mph (152.87 km/h) |
| 95 mph (152.89 km/h) | 100.27 mph (161.36 km/h) |
| 100 mph (160.93 km/h) | 105.54 mph (169.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | 2305 | 2482 | 2592 | 2710 | 2795 | 2888 | 2997 | 3149 | 3301 | 3470 | 3605 | 3850 | 4120 | 4332 | 4467 | 4543 | 4821 | 5210 | 6054 |
Better Fuel Economy Factory Ratios Increased Power
