Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/40-17 | 245/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.4 (619.8) | 25.68 (652.3) | 1.28 (32.5) 5.2% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 76.66 (1947.16) | 80.68 (2049.26) | 4.02 (102.1) 5.2% |
| Sidewall Height inches (mm) | 3.7 (94) | 4.34 (110.25) | 0.64 (16.25) 17.3% |
| Revolutions per mile (km) | 826.51 (513.57) | 785.33 (487.98) | -41.18 (-25.59) -5% |
245/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.87 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.34 km/h) |
| 30 mph (48.28 km/h) | 31.57 mph (50.81 km/h) |
| 35 mph (56.33 km/h) | 36.84 mph (59.28 km/h) |
| 40 mph (64.37 km/h) | 42.1 mph (67.75 km/h) |
| 45 mph (72.42 km/h) | 47.36 mph (76.22 km/h) |
| 50 mph (80.47 km/h) | 52.62 mph (84.69 km/h) |
| 55 mph (88.51 km/h) | 57.88 mph (93.16 km/h) |
| 60 mph (96.56 km/h) | 63.15 mph (101.62 km/h) |
| 65 mph (104.61 km/h) | 68.41 mph (110.09 km/h) |
| 70 mph (112.65 km/h) | 73.67 mph (118.56 km/h) |
| 75 mph (120.7 km/h) | 78.93 mph (127.03 km/h) |
| 80 mph (128.75 km/h) | 84.19 mph (135.5 km/h) |
| 85 mph (136.79 km/h) | 89.46 mph (143.97 km/h) |
| 90 mph (144.84 km/h) | 94.72 mph (152.44 km/h) |
| 95 mph (152.89 km/h) | 99.98 mph (160.9 km/h) |
| 100 mph (160.93 km/h) | 105.24 mph (169.37 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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