Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/60-18 | 155/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 25.32 (643.2) | 0.71 (18) 2.9% |
| Width inches (mm) | 5.51 (140) | 6.1 (155) | 0.59 (15) 10.7% |
| Circum. inches (mm) | 77.33 (1964.12) | 79.55 (2020.67) | 2.23 (56.55) 2.9% |
| Sidewall Height inches (mm) | 3.31 (84) | 3.66 (93) | 0.35 (9) 10.7% |
| Revolutions per mile (km) | 819.37 (509.13) | 796.44 (494.88) | -22.93 (-14.25) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.58 mph (33.11 km/h) |
| 25 mph (40.23 km/h) | 25.72 mph (41.39 km/h) |
| 30 mph (48.28 km/h) | 30.86 mph (49.67 km/h) |
| 35 mph (56.33 km/h) | 36.01 mph (57.95 km/h) |
| 40 mph (64.37 km/h) | 41.15 mph (66.23 km/h) |
| 45 mph (72.42 km/h) | 46.3 mph (74.51 km/h) |
| 50 mph (80.47 km/h) | 51.44 mph (82.78 km/h) |
| 55 mph (88.51 km/h) | 56.58 mph (91.06 km/h) |
| 60 mph (96.56 km/h) | 61.73 mph (99.34 km/h) |
| 65 mph (104.61 km/h) | 66.87 mph (107.62 km/h) |
| 70 mph (112.65 km/h) | 72.02 mph (115.9 km/h) |
| 75 mph (120.7 km/h) | 77.16 mph (124.18 km/h) |
| 80 mph (128.75 km/h) | 82.3 mph (132.45 km/h) |
| 85 mph (136.79 km/h) | 87.45 mph (140.73 km/h) |
| 90 mph (144.84 km/h) | 92.59 mph (149.01 km/h) |
| 95 mph (152.89 km/h) | 97.74 mph (157.29 km/h) |
| 100 mph (160.93 km/h) | 102.88 mph (165.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2027 | 2355 | 2536 | 2648 | 2769 | 2855 | 2950 | 3062 | 3217 | 3372 | 3545 | 3683 | 3933 | 4209 | 4424 | 4562 | 4640 | 4925 | 5321 | 6184 |
Better Fuel Economy Factory Ratios Increased Power
