Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-18 | 245/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.89 (632.2) | 25.68 (652.3) | 0.79 (20.1) 3.2% |
| Width inches (mm) | 4.92 (125) | 9.65 (245) | 4.72 (120) 96% |
| Circum. inches (mm) | 78.19 (1986.11) | 80.68 (2049.26) | 2.49 (63.15) 3.2% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 4.34 (110.25) | 0.9 (22.75) 26% |
| Revolutions per mile (km) | 810.3 (503.49) | 785.33 (487.98) | -24.97 (-15.51) -3.1% |
245/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.64 mph (33.21 km/h) |
| 25 mph (40.23 km/h) | 25.79 mph (41.51 km/h) |
| 30 mph (48.28 km/h) | 30.95 mph (49.82 km/h) |
| 35 mph (56.33 km/h) | 36.11 mph (58.12 km/h) |
| 40 mph (64.37 km/h) | 41.27 mph (66.42 km/h) |
| 45 mph (72.42 km/h) | 46.43 mph (74.72 km/h) |
| 50 mph (80.47 km/h) | 51.59 mph (83.03 km/h) |
| 55 mph (88.51 km/h) | 56.75 mph (91.33 km/h) |
| 60 mph (96.56 km/h) | 61.91 mph (99.63 km/h) |
| 65 mph (104.61 km/h) | 67.07 mph (107.93 km/h) |
| 70 mph (112.65 km/h) | 72.23 mph (116.24 km/h) |
| 75 mph (120.7 km/h) | 77.38 mph (124.54 km/h) |
| 80 mph (128.75 km/h) | 82.54 mph (132.84 km/h) |
| 85 mph (136.79 km/h) | 87.7 mph (141.14 km/h) |
| 90 mph (144.84 km/h) | 92.86 mph (149.45 km/h) |
| 95 mph (152.89 km/h) | 98.02 mph (157.75 km/h) |
| 100 mph (160.93 km/h) | 103.18 mph (166.05 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 |
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