Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 247/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 29.67 (753.6) | -0.02 (-0.6) -0.1% |
| Width inches (mm) | 6.5 (165) | 9.72 (247) | 3.23 (82) 49.7% |
| Circum. inches (mm) | 93.28 (2369.39) | 93.21 (2367.5) | -0.07 (-1.88) -0.1% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 5.83 (148.2) | -0.01 (-0.3) -0.2% |
| Revolutions per mile (km) | 679.22 (422.05) | 679.76 (422.38) | 0.54 (0.34) 0.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.98 mph (32.16 km/h) |
| 25 mph (40.23 km/h) | 24.98 mph (40.2 km/h) |
| 30 mph (48.28 km/h) | 29.98 mph (48.24 km/h) |
| 35 mph (56.33 km/h) | 34.97 mph (56.28 km/h) |
| 40 mph (64.37 km/h) | 39.97 mph (64.32 km/h) |
| 45 mph (72.42 km/h) | 44.96 mph (72.36 km/h) |
| 50 mph (80.47 km/h) | 49.96 mph (80.4 km/h) |
| 55 mph (88.51 km/h) | 54.96 mph (88.44 km/h) |
| 60 mph (96.56 km/h) | 59.95 mph (96.48 km/h) |
| 65 mph (104.61 km/h) | 64.95 mph (104.52 km/h) |
| 70 mph (112.65 km/h) | 69.94 mph (112.56 km/h) |
| 75 mph (120.7 km/h) | 74.94 mph (120.61 km/h) |
| 80 mph (128.75 km/h) | 79.94 mph (128.65 km/h) |
| 85 mph (136.79 km/h) | 84.93 mph (136.69 km/h) |
| 90 mph (144.84 km/h) | 89.93 mph (144.73 km/h) |
| 95 mph (152.89 km/h) | 94.92 mph (152.77 km/h) |
| 100 mph (160.93 km/h) | 99.92 mph (160.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1730 | 2010 | 2164 | 2260 | 2363 | 2437 | 2518 | 2613 | 2746 | 2878 | 3025 | 3143 | 3357 | 3592 | 3776 | 3894 | 3960 | 4203 | 4542 | 5278 |
Better Fuel Economy Factory Ratios Increased Power
