Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/40-17 | 245/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.35 (643.8) | 25.68 (652.3) | 0.33 (8.5) 1.3% |
| Width inches (mm) | 10.43 (265) | 9.65 (245) | -0.79 (-20) -7.5% |
| Circum. inches (mm) | 79.63 (2022.56) | 80.68 (2049.26) | 1.05 (26.7) 1.3% |
| Sidewall Height inches (mm) | 4.17 (106) | 4.34 (110.25) | 0.17 (4.25) 4% |
| Revolutions per mile (km) | 795.7 (494.42) | 785.33 (487.98) | -10.37 (-6.44) -1.3% |
245/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.26 mph (32.61 km/h) |
| 25 mph (40.23 km/h) | 25.33 mph (40.76 km/h) |
| 30 mph (48.28 km/h) | 30.4 mph (48.92 km/h) |
| 35 mph (56.33 km/h) | 35.46 mph (57.07 km/h) |
| 40 mph (64.37 km/h) | 40.53 mph (65.22 km/h) |
| 45 mph (72.42 km/h) | 45.59 mph (73.38 km/h) |
| 50 mph (80.47 km/h) | 50.66 mph (81.53 km/h) |
| 55 mph (88.51 km/h) | 55.73 mph (89.68 km/h) |
| 60 mph (96.56 km/h) | 60.79 mph (97.84 km/h) |
| 65 mph (104.61 km/h) | 65.86 mph (105.99 km/h) |
| 70 mph (112.65 km/h) | 70.92 mph (114.14 km/h) |
| 75 mph (120.7 km/h) | 75.99 mph (122.29 km/h) |
| 80 mph (128.75 km/h) | 81.06 mph (130.45 km/h) |
| 85 mph (136.79 km/h) | 86.12 mph (138.6 km/h) |
| 90 mph (144.84 km/h) | 91.19 mph (146.75 km/h) |
| 95 mph (152.89 km/h) | 96.25 mph (154.91 km/h) |
| 100 mph (160.93 km/h) | 101.32 mph (163.06 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
