Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-15 | 285/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.51 (622.5) | 23.98 (609) | -0.53 (-13.5) -2.2% |
| Width inches (mm) | 13.58 (345) | 11.22 (285) | -2.36 (-60) -17.4% |
| Circum. inches (mm) | 76.99 (1955.64) | 75.32 (1913.23) | -1.67 (-42.41) -2.2% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 4.49 (114) | -0.27 (-6.75) -5.6% |
| Revolutions per mile (km) | 822.92 (511.34) | 841.17 (522.68) | 18.24 (11.34) 2.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.57 mph (31.49 km/h) |
| 25 mph (40.23 km/h) | 24.46 mph (39.36 km/h) |
| 30 mph (48.28 km/h) | 29.35 mph (47.23 km/h) |
| 35 mph (56.33 km/h) | 34.24 mph (55.11 km/h) |
| 40 mph (64.37 km/h) | 39.13 mph (62.98 km/h) |
| 45 mph (72.42 km/h) | 44.02 mph (70.85 km/h) |
| 50 mph (80.47 km/h) | 48.92 mph (78.72 km/h) |
| 55 mph (88.51 km/h) | 53.81 mph (86.59 km/h) |
| 60 mph (96.56 km/h) | 58.7 mph (94.47 km/h) |
| 65 mph (104.61 km/h) | 63.59 mph (102.34 km/h) |
| 70 mph (112.65 km/h) | 68.48 mph (110.21 km/h) |
| 75 mph (120.7 km/h) | 73.37 mph (118.08 km/h) |
| 80 mph (128.75 km/h) | 78.27 mph (125.96 km/h) |
| 85 mph (136.79 km/h) | 83.16 mph (133.83 km/h) |
| 90 mph (144.84 km/h) | 88.05 mph (141.7 km/h) |
| 95 mph (152.89 km/h) | 92.94 mph (149.57 km/h) |
| 100 mph (160.93 km/h) | 97.83 mph (157.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2141 | 2487 | 2678 | 2796 | 2924 | 3015 | 3115 | 3234 | 3398 | 3562 | 3744 | 3890 | 4154 | 4445 | 4673 | 4819 | 4901 | 5201 | 5620 | 6531 |
Better Fuel Economy Factory Ratios Increased Power
