Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 260/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 33.35 (847.2) | 2.95 (75) 9.7% |
| Width inches (mm) | 6.89 (175) | 10.24 (260) | 3.35 (85) 48.6% |
| Circum. inches (mm) | 95.51 (2425.94) | 104.79 (2661.56) | 9.28 (235.62) 9.7% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 7.68 (195) | 1.48 (37.5) 23.8% |
| Revolutions per mile (km) | 663.39 (412.21) | 604.66 (375.72) | -58.73 (-36.49) -8.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.94 mph (35.31 km/h) |
| 25 mph (40.23 km/h) | 27.43 mph (44.14 km/h) |
| 30 mph (48.28 km/h) | 32.91 mph (52.97 km/h) |
| 35 mph (56.33 km/h) | 38.4 mph (61.8 km/h) |
| 40 mph (64.37 km/h) | 43.89 mph (70.63 km/h) |
| 45 mph (72.42 km/h) | 49.37 mph (79.45 km/h) |
| 50 mph (80.47 km/h) | 54.86 mph (88.28 km/h) |
| 55 mph (88.51 km/h) | 60.34 mph (97.11 km/h) |
| 60 mph (96.56 km/h) | 65.83 mph (105.94 km/h) |
| 65 mph (104.61 km/h) | 71.31 mph (114.77 km/h) |
| 70 mph (112.65 km/h) | 76.8 mph (123.6 km/h) |
| 75 mph (120.7 km/h) | 82.28 mph (132.42 km/h) |
| 80 mph (128.75 km/h) | 87.77 mph (141.25 km/h) |
| 85 mph (136.79 km/h) | 93.26 mph (150.08 km/h) |
| 90 mph (144.84 km/h) | 98.74 mph (158.91 km/h) |
| 95 mph (152.89 km/h) | 104.23 mph (167.74 km/h) |
| 100 mph (160.93 km/h) | 109.71 mph (176.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1539 | 1788 | 1925 | 2010 | 2102 | 2167 | 2239 | 2324 | 2442 | 2560 | 2691 | 2796 | 2986 | 3195 | 3359 | 3464 | 3523 | 3739 | 4040 | 4695 |
Better Fuel Economy Factory Ratios Increased Power
