Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 295/85-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 37.74 (958.7) | 7.34 (186.5) 24.2% |
| Width inches (mm) | 6.89 (175) | 11.61 (295) | 4.72 (120) 68.6% |
| Circum. inches (mm) | 95.51 (2425.94) | 118.58 (3011.84) | 23.07 (585.91) 24.2% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 9.87 (250.75) | 3.67 (93.25) 59.2% |
| Revolutions per mile (km) | 663.39 (412.21) | 534.34 (332.02) | -129.05 (-80.19) -19.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.83 mph (39.96 km/h) |
| 25 mph (40.23 km/h) | 31.04 mph (49.95 km/h) |
| 30 mph (48.28 km/h) | 37.25 mph (59.94 km/h) |
| 35 mph (56.33 km/h) | 43.45 mph (69.93 km/h) |
| 40 mph (64.37 km/h) | 49.66 mph (79.92 km/h) |
| 45 mph (72.42 km/h) | 55.87 mph (89.91 km/h) |
| 50 mph (80.47 km/h) | 62.08 mph (99.9 km/h) |
| 55 mph (88.51 km/h) | 68.28 mph (109.89 km/h) |
| 60 mph (96.56 km/h) | 74.49 mph (119.88 km/h) |
| 65 mph (104.61 km/h) | 80.7 mph (129.87 km/h) |
| 70 mph (112.65 km/h) | 86.91 mph (139.86 km/h) |
| 75 mph (120.7 km/h) | 93.11 mph (149.85 km/h) |
| 80 mph (128.75 km/h) | 99.32 mph (159.84 km/h) |
| 85 mph (136.79 km/h) | 105.53 mph (169.83 km/h) |
| 90 mph (144.84 km/h) | 111.74 mph (179.82 km/h) |
| 95 mph (152.89 km/h) | 117.94 mph (189.81 km/h) |
| 100 mph (160.93 km/h) | 124.15 mph (199.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1360 | 1580 | 1701 | 1776 | 1857 | 1915 | 1979 | 2054 | 2158 | 2262 | 2378 | 2471 | 2639 | 2824 | 2968 | 3061 | 3113 | 3304 | 3570 | 4149 |
Better Fuel Economy Factory Ratios Increased Power
