Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-18 | 245/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.57 (751.2) | 26.68 (677.7) | -2.89 (-73.5) -9.8% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 92.91 (2359.96) | 83.82 (2129.06) | -9.09 (-230.91) -9.8% |
| Sidewall Height inches (mm) | 5.79 (147) | 4.34 (110.25) | -1.45 (-36.75) -25% |
| Revolutions per mile (km) | 681.94 (423.73) | 755.9 (469.69) | 73.96 (45.96) 10.8% |
245/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.04 mph (29.04 km/h) |
| 25 mph (40.23 km/h) | 22.55 mph (36.3 km/h) |
| 30 mph (48.28 km/h) | 27.06 mph (43.56 km/h) |
| 35 mph (56.33 km/h) | 31.58 mph (50.82 km/h) |
| 40 mph (64.37 km/h) | 36.09 mph (58.08 km/h) |
| 45 mph (72.42 km/h) | 40.6 mph (65.33 km/h) |
| 50 mph (80.47 km/h) | 45.11 mph (72.59 km/h) |
| 55 mph (88.51 km/h) | 49.62 mph (79.85 km/h) |
| 60 mph (96.56 km/h) | 54.13 mph (87.11 km/h) |
| 65 mph (104.61 km/h) | 58.64 mph (94.37 km/h) |
| 70 mph (112.65 km/h) | 63.15 mph (101.63 km/h) |
| 75 mph (120.7 km/h) | 67.66 mph (108.89 km/h) |
| 80 mph (128.75 km/h) | 72.17 mph (116.15 km/h) |
| 85 mph (136.79 km/h) | 76.68 mph (123.41 km/h) |
| 90 mph (144.84 km/h) | 81.19 mph (130.67 km/h) |
| 95 mph (152.89 km/h) | 85.7 mph (137.93 km/h) |
| 100 mph (160.93 km/h) | 90.22 mph (145.19 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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