Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 200/50-18 | 245/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.87 (657.2) | 26.68 (677.7) | 0.81 (20.5) 3.1% |
| Width inches (mm) | 7.87 (200) | 9.65 (245) | 1.77 (45) 22.5% |
| Circum. inches (mm) | 81.29 (2064.65) | 83.82 (2129.06) | 2.54 (64.4) 3.1% |
| Sidewall Height inches (mm) | 3.94 (100) | 4.34 (110.25) | 0.4 (10.25) 10.3% |
| Revolutions per mile (km) | 779.47 (484.34) | 755.9 (469.69) | -23.58 (-14.65) -3% |
245/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.62 mph (33.19 km/h) |
| 25 mph (40.23 km/h) | 25.78 mph (41.49 km/h) |
| 30 mph (48.28 km/h) | 30.94 mph (49.79 km/h) |
| 35 mph (56.33 km/h) | 36.09 mph (58.08 km/h) |
| 40 mph (64.37 km/h) | 41.25 mph (66.38 km/h) |
| 45 mph (72.42 km/h) | 46.4 mph (74.68 km/h) |
| 50 mph (80.47 km/h) | 51.56 mph (82.98 km/h) |
| 55 mph (88.51 km/h) | 56.72 mph (91.28 km/h) |
| 60 mph (96.56 km/h) | 61.87 mph (99.57 km/h) |
| 65 mph (104.61 km/h) | 67.03 mph (107.87 km/h) |
| 70 mph (112.65 km/h) | 72.18 mph (116.17 km/h) |
| 75 mph (120.7 km/h) | 77.34 mph (124.47 km/h) |
| 80 mph (128.75 km/h) | 82.5 mph (132.76 km/h) |
| 85 mph (136.79 km/h) | 87.65 mph (141.06 km/h) |
| 90 mph (144.84 km/h) | 92.81 mph (149.36 km/h) |
| 95 mph (152.89 km/h) | 97.96 mph (157.66 km/h) |
| 100 mph (160.93 km/h) | 103.12 mph (165.95 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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