Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/45-18 | 245/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.62 (650.7) | 26.68 (677.7) | 1.06 (27) 4.1% |
| Width inches (mm) | 8.46 (215) | 9.65 (245) | 1.18 (30) 14% |
| Circum. inches (mm) | 80.48 (2044.23) | 83.82 (2129.06) | 3.34 (84.82) 4.1% |
| Sidewall Height inches (mm) | 3.81 (96.75) | 4.34 (110.25) | 0.53 (13.5) 14% |
| Revolutions per mile (km) | 787.26 (489.18) | 755.9 (469.69) | -31.36 (-19.49) -4% |
245/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.83 mph (33.52 km/h) |
| 25 mph (40.23 km/h) | 26.04 mph (41.9 km/h) |
| 30 mph (48.28 km/h) | 31.24 mph (50.28 km/h) |
| 35 mph (56.33 km/h) | 36.45 mph (58.66 km/h) |
| 40 mph (64.37 km/h) | 41.66 mph (67.04 km/h) |
| 45 mph (72.42 km/h) | 46.87 mph (75.43 km/h) |
| 50 mph (80.47 km/h) | 52.07 mph (83.81 km/h) |
| 55 mph (88.51 km/h) | 57.28 mph (92.19 km/h) |
| 60 mph (96.56 km/h) | 62.49 mph (100.57 km/h) |
| 65 mph (104.61 km/h) | 67.7 mph (108.95 km/h) |
| 70 mph (112.65 km/h) | 72.9 mph (117.33 km/h) |
| 75 mph (120.7 km/h) | 78.11 mph (125.71 km/h) |
| 80 mph (128.75 km/h) | 83.32 mph (134.09 km/h) |
| 85 mph (136.79 km/h) | 88.53 mph (142.47 km/h) |
| 90 mph (144.84 km/h) | 93.73 mph (150.85 km/h) |
| 95 mph (152.89 km/h) | 98.94 mph (159.23 km/h) |
| 100 mph (160.93 km/h) | 104.15 mph (167.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1924 | 2235 | 2407 | 2513 | 2628 | 2709 | 2799 | 2906 | 3053 | 3201 | 3364 | 3495 | 3733 | 3995 | 4199 | 4330 | 4404 | 4674 | 5050 | 5869 |
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