Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 295/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 38.58 (980) | 8.18 (207.8) 26.9% |
| Width inches (mm) | 6.89 (175) | 11.61 (295) | 4.72 (120) 68.6% |
| Circum. inches (mm) | 95.51 (2425.94) | 121.21 (3078.76) | 25.7 (652.82) 26.9% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 9.29 (236) | 3.09 (78.5) 49.8% |
| Revolutions per mile (km) | 663.39 (412.21) | 522.72 (324.81) | -140.67 (-87.41) -21.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.38 mph (40.85 km/h) |
| 25 mph (40.23 km/h) | 31.73 mph (51.06 km/h) |
| 30 mph (48.28 km/h) | 38.07 mph (61.27 km/h) |
| 35 mph (56.33 km/h) | 44.42 mph (71.48 km/h) |
| 40 mph (64.37 km/h) | 50.76 mph (81.7 km/h) |
| 45 mph (72.42 km/h) | 57.11 mph (91.91 km/h) |
| 50 mph (80.47 km/h) | 63.46 mph (102.12 km/h) |
| 55 mph (88.51 km/h) | 69.8 mph (112.33 km/h) |
| 60 mph (96.56 km/h) | 76.15 mph (122.55 km/h) |
| 65 mph (104.61 km/h) | 82.49 mph (132.76 km/h) |
| 70 mph (112.65 km/h) | 88.84 mph (142.97 km/h) |
| 75 mph (120.7 km/h) | 95.18 mph (153.18 km/h) |
| 80 mph (128.75 km/h) | 101.53 mph (163.39 km/h) |
| 85 mph (136.79 km/h) | 107.87 mph (173.61 km/h) |
| 90 mph (144.84 km/h) | 114.22 mph (183.82 km/h) |
| 95 mph (152.89 km/h) | 120.56 mph (194.03 km/h) |
| 100 mph (160.93 km/h) | 126.91 mph (204.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1330 | 1545 | 1664 | 1738 | 1817 | 1874 | 1936 | 2010 | 2111 | 2213 | 2326 | 2417 | 2581 | 2762 | 2904 | 2994 | 3045 | 3232 | 3493 | 4059 |
Better Fuel Economy Factory Ratios Increased Power
