Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/85-16 | 140/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 27.92 (709.2) | 2.55 (64.8) 10.1% |
| Width inches (mm) | 5.51 (140) | 5.51 (140) | 0 (0) 0% |
| Circum. inches (mm) | 79.7 (2024.44) | 87.72 (2228.02) | 8.01 (203.58) 10.1% |
| Sidewall Height inches (mm) | 4.69 (119) | 4.96 (126) | 0.28 (7) 5.9% |
| Revolutions per mile (km) | 794.96 (493.96) | 722.32 (448.83) | -72.64 (-45.13) -9.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.01 mph (35.42 km/h) |
| 25 mph (40.23 km/h) | 27.51 mph (44.28 km/h) |
| 30 mph (48.28 km/h) | 33.02 mph (53.14 km/h) |
| 35 mph (56.33 km/h) | 38.52 mph (61.99 km/h) |
| 40 mph (64.37 km/h) | 44.02 mph (70.85 km/h) |
| 45 mph (72.42 km/h) | 49.53 mph (79.7 km/h) |
| 50 mph (80.47 km/h) | 55.03 mph (88.56 km/h) |
| 55 mph (88.51 km/h) | 60.53 mph (97.41 km/h) |
| 60 mph (96.56 km/h) | 66.03 mph (106.27 km/h) |
| 65 mph (104.61 km/h) | 71.54 mph (115.13 km/h) |
| 70 mph (112.65 km/h) | 77.04 mph (123.98 km/h) |
| 75 mph (120.7 km/h) | 82.54 mph (132.84 km/h) |
| 80 mph (128.75 km/h) | 88.04 mph (141.69 km/h) |
| 85 mph (136.79 km/h) | 93.55 mph (150.55 km/h) |
| 90 mph (144.84 km/h) | 99.05 mph (159.41 km/h) |
| 95 mph (152.89 km/h) | 104.55 mph (168.26 km/h) |
| 100 mph (160.93 km/h) | 110.06 mph (177.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1838 | 2135 | 2300 | 2401 | 2511 | 2589 | 2675 | 2777 | 2918 | 3058 | 3215 | 3340 | 3567 | 3817 | 4013 | 4138 | 4208 | 4466 | 4826 | 5608 |
Better Fuel Economy Factory Ratios Increased Power
