Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-16 | 245/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.87 (606.4) | 25.68 (652.3) | 1.81 (45.9) 7.6% |
| Width inches (mm) | 4.92 (125) | 9.65 (245) | 4.72 (120) 96% |
| Circum. inches (mm) | 75 (1905.06) | 80.68 (2049.26) | 5.68 (144.2) 7.6% |
| Sidewall Height inches (mm) | 3.94 (100) | 4.34 (110.25) | 0.4 (10.25) 10.3% |
| Revolutions per mile (km) | 844.77 (524.92) | 785.33 (487.98) | -59.44 (-36.94) -7% |
245/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.51 mph (34.62 km/h) |
| 25 mph (40.23 km/h) | 26.89 mph (43.28 km/h) |
| 30 mph (48.28 km/h) | 32.27 mph (51.93 km/h) |
| 35 mph (56.33 km/h) | 37.65 mph (60.59 km/h) |
| 40 mph (64.37 km/h) | 43.03 mph (69.25 km/h) |
| 45 mph (72.42 km/h) | 48.41 mph (77.9 km/h) |
| 50 mph (80.47 km/h) | 53.78 mph (86.56 km/h) |
| 55 mph (88.51 km/h) | 59.16 mph (95.21 km/h) |
| 60 mph (96.56 km/h) | 64.54 mph (103.87 km/h) |
| 65 mph (104.61 km/h) | 69.92 mph (112.53 km/h) |
| 70 mph (112.65 km/h) | 75.3 mph (121.18 km/h) |
| 75 mph (120.7 km/h) | 80.68 mph (129.84 km/h) |
| 80 mph (128.75 km/h) | 86.06 mph (138.49 km/h) |
| 85 mph (136.79 km/h) | 91.43 mph (147.15 km/h) |
| 90 mph (144.84 km/h) | 96.81 mph (155.8 km/h) |
| 95 mph (152.89 km/h) | 102.19 mph (164.46 km/h) |
| 100 mph (160.93 km/h) | 107.57 mph (173.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2322 | 2500 | 2611 | 2730 | 2815 | 2908 | 3019 | 3172 | 3325 | 3495 | 3631 | 3878 | 4150 | 4363 | 4499 | 4575 | 4856 | 5247 | 6098 |
Better Fuel Economy Factory Ratios Increased Power
