Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/70-17.5 | 245/80-17.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31 (787.5) | 32.93 (836.5) | 1.93 (49) 6.2% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 97.4 (2474) | 103.46 (2627.94) | 6.06 (153.94) 6.2% |
| Sidewall Height inches (mm) | 6.75 (171.5) | 7.72 (196) | 0.96 (24.5) 14.3% |
| Revolutions per mile (km) | 650.5 (404.2) | 612.4 (380.53) | -38.1 (-23.68) -5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.24 mph (34.19 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.74 km/h) |
| 30 mph (48.28 km/h) | 31.87 mph (51.28 km/h) |
| 35 mph (56.33 km/h) | 37.18 mph (59.83 km/h) |
| 40 mph (64.37 km/h) | 42.49 mph (68.38 km/h) |
| 45 mph (72.42 km/h) | 47.8 mph (76.93 km/h) |
| 50 mph (80.47 km/h) | 53.11 mph (85.47 km/h) |
| 55 mph (88.51 km/h) | 58.42 mph (94.02 km/h) |
| 60 mph (96.56 km/h) | 63.73 mph (102.57 km/h) |
| 65 mph (104.61 km/h) | 69.04 mph (111.12 km/h) |
| 70 mph (112.65 km/h) | 74.36 mph (119.66 km/h) |
| 75 mph (120.7 km/h) | 79.67 mph (128.21 km/h) |
| 80 mph (128.75 km/h) | 84.98 mph (136.76 km/h) |
| 85 mph (136.79 km/h) | 90.29 mph (145.31 km/h) |
| 90 mph (144.84 km/h) | 95.6 mph (153.85 km/h) |
| 95 mph (152.89 km/h) | 100.91 mph (162.4 km/h) |
| 100 mph (160.93 km/h) | 106.22 mph (170.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1558 | 1810 | 1950 | 2036 | 2129 | 2195 | 2268 | 2354 | 2474 | 2593 | 2726 | 2832 | 3024 | 3236 | 3402 | 3508 | 3568 | 3787 | 4092 | 4755 |
Better Fuel Economy Factory Ratios Increased Power
