Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 256/60-18 | 255/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.09 (764.4) | 32.06 (814.2) | 1.96 (49.8) 6.5% |
| Width inches (mm) | 10.08 (256) | 10.04 (255) | -0.04 (-1) -0.4% |
| Circum. inches (mm) | 94.54 (2401.43) | 100.7 (2557.88) | 6.16 (156.45) 6.5% |
| Sidewall Height inches (mm) | 6.05 (153.6) | 7.03 (178.5) | 0.98 (24.9) 16.2% |
| Revolutions per mile (km) | 670.16 (416.42) | 629.17 (390.95) | -40.99 (-25.47) -6.1% |
255/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.3 mph (34.28 km/h) |
| 25 mph (40.23 km/h) | 26.63 mph (42.85 km/h) |
| 30 mph (48.28 km/h) | 31.95 mph (51.43 km/h) |
| 35 mph (56.33 km/h) | 37.28 mph (60 km/h) |
| 40 mph (64.37 km/h) | 42.61 mph (68.57 km/h) |
| 45 mph (72.42 km/h) | 47.93 mph (77.14 km/h) |
| 50 mph (80.47 km/h) | 53.26 mph (85.71 km/h) |
| 55 mph (88.51 km/h) | 58.58 mph (94.28 km/h) |
| 60 mph (96.56 km/h) | 63.91 mph (102.85 km/h) |
| 65 mph (104.61 km/h) | 69.23 mph (111.42 km/h) |
| 70 mph (112.65 km/h) | 74.56 mph (119.99 km/h) |
| 75 mph (120.7 km/h) | 79.89 mph (128.56 km/h) |
| 80 mph (128.75 km/h) | 85.21 mph (137.14 km/h) |
| 85 mph (136.79 km/h) | 90.54 mph (145.71 km/h) |
| 90 mph (144.84 km/h) | 95.86 mph (154.28 km/h) |
| 95 mph (152.89 km/h) | 101.19 mph (162.85 km/h) |
| 100 mph (160.93 km/h) | 106.51 mph (171.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2092 | 2187 | 2255 | 2330 | 2419 | 2541 | 2664 | 2800 | 2909 | 3107 | 3325 | 3495 | 3604 | 3666 | 3890 | 4204 | 4885 |
Better Fuel Economy Factory Ratios Increased Power
