Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/40-18 | 245/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.72 (653.2) | 26.65 (676.8) | 0.93 (23.6) 3.6% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 80.79 (2052.09) | 83.71 (2126.23) | 2.92 (74.14) 3.6% |
| Sidewall Height inches (mm) | 3.86 (98) | 4.82 (122.5) | 0.96 (24.5) 25% |
| Revolutions per mile (km) | 784.25 (487.31) | 756.9 (470.32) | -27.35 (-16.99) -3.5% |
245/50-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.72 mph (33.35 km/h) |
| 25 mph (40.23 km/h) | 25.9 mph (41.69 km/h) |
| 30 mph (48.28 km/h) | 31.08 mph (50.02 km/h) |
| 35 mph (56.33 km/h) | 36.26 mph (58.36 km/h) |
| 40 mph (64.37 km/h) | 41.45 mph (66.7 km/h) |
| 45 mph (72.42 km/h) | 46.63 mph (75.04 km/h) |
| 50 mph (80.47 km/h) | 51.81 mph (83.37 km/h) |
| 55 mph (88.51 km/h) | 56.99 mph (91.71 km/h) |
| 60 mph (96.56 km/h) | 62.17 mph (100.05 km/h) |
| 65 mph (104.61 km/h) | 67.35 mph (108.39 km/h) |
| 70 mph (112.65 km/h) | 72.53 mph (116.72 km/h) |
| 75 mph (120.7 km/h) | 77.71 mph (125.06 km/h) |
| 80 mph (128.75 km/h) | 82.89 mph (133.4 km/h) |
| 85 mph (136.79 km/h) | 88.07 mph (141.74 km/h) |
| 90 mph (144.84 km/h) | 93.25 mph (150.07 km/h) |
| 95 mph (152.89 km/h) | 98.43 mph (158.41 km/h) |
| 100 mph (160.93 km/h) | 103.61 mph (166.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1926 | 2238 | 2410 | 2516 | 2631 | 2713 | 2803 | 2910 | 3057 | 3205 | 3369 | 3500 | 3738 | 4000 | 4205 | 4336 | 4410 | 4680 | 5057 | 5877 |
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