Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 295/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 36.26 (921) | 5.86 (148.8) 19.3% |
| Width inches (mm) | 6.89 (175) | 11.61 (295) | 4.72 (120) 68.6% |
| Circum. inches (mm) | 95.51 (2425.94) | 113.91 (2893.41) | 18.4 (467.47) 19.3% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 8.13 (206.5) | 1.93 (49) 31.1% |
| Revolutions per mile (km) | 663.39 (412.21) | 556.21 (345.61) | -107.18 (-66.6) -16.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.85 mph (38.39 km/h) |
| 25 mph (40.23 km/h) | 29.82 mph (47.99 km/h) |
| 30 mph (48.28 km/h) | 35.78 mph (57.58 km/h) |
| 35 mph (56.33 km/h) | 41.74 mph (67.18 km/h) |
| 40 mph (64.37 km/h) | 47.71 mph (76.78 km/h) |
| 45 mph (72.42 km/h) | 53.67 mph (86.38 km/h) |
| 50 mph (80.47 km/h) | 59.63 mph (95.97 km/h) |
| 55 mph (88.51 km/h) | 65.6 mph (105.57 km/h) |
| 60 mph (96.56 km/h) | 71.56 mph (115.17 km/h) |
| 65 mph (104.61 km/h) | 77.53 mph (124.77 km/h) |
| 70 mph (112.65 km/h) | 83.49 mph (134.36 km/h) |
| 75 mph (120.7 km/h) | 89.45 mph (143.96 km/h) |
| 80 mph (128.75 km/h) | 95.42 mph (153.56 km/h) |
| 85 mph (136.79 km/h) | 101.38 mph (163.15 km/h) |
| 90 mph (144.84 km/h) | 107.34 mph (172.75 km/h) |
| 95 mph (152.89 km/h) | 113.31 mph (182.35 km/h) |
| 100 mph (160.93 km/h) | 119.27 mph (191.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1415 | 1644 | 1771 | 1849 | 1933 | 1994 | 2060 | 2138 | 2247 | 2355 | 2476 | 2572 | 2747 | 2939 | 3090 | 3186 | 3240 | 3439 | 3716 | 4319 |
Better Fuel Economy Factory Ratios Increased Power
