Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-18 | 245/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.57 (751.2) | 27.65 (702.2) | -1.93 (-49) -6.5% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 92.91 (2359.96) | 86.85 (2206.03) | -6.06 (-153.94) -6.5% |
| Sidewall Height inches (mm) | 5.79 (147) | 4.82 (122.5) | -0.96 (-24.5) -16.7% |
| Revolutions per mile (km) | 681.94 (423.73) | 729.52 (453.3) | 47.59 (29.57) 7% |
245/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.7 mph (30.09 km/h) |
| 25 mph (40.23 km/h) | 23.37 mph (37.61 km/h) |
| 30 mph (48.28 km/h) | 28.04 mph (45.13 km/h) |
| 35 mph (56.33 km/h) | 32.72 mph (52.65 km/h) |
| 40 mph (64.37 km/h) | 37.39 mph (60.17 km/h) |
| 45 mph (72.42 km/h) | 42.06 mph (67.7 km/h) |
| 50 mph (80.47 km/h) | 46.74 mph (75.22 km/h) |
| 55 mph (88.51 km/h) | 51.41 mph (82.74 km/h) |
| 60 mph (96.56 km/h) | 56.09 mph (90.26 km/h) |
| 65 mph (104.61 km/h) | 60.76 mph (97.78 km/h) |
| 70 mph (112.65 km/h) | 65.43 mph (105.31 km/h) |
| 75 mph (120.7 km/h) | 70.11 mph (112.83 km/h) |
| 80 mph (128.75 km/h) | 74.78 mph (120.35 km/h) |
| 85 mph (136.79 km/h) | 79.46 mph (127.87 km/h) |
| 90 mph (144.84 km/h) | 84.13 mph (135.39 km/h) |
| 95 mph (152.89 km/h) | 88.8 mph (142.92 km/h) |
| 100 mph (160.93 km/h) | 93.48 mph (150.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1856 | 2157 | 2323 | 2425 | 2536 | 2615 | 2702 | 2804 | 2947 | 3089 | 3247 | 3373 | 3602 | 3855 | 4053 | 4179 | 4250 | 4511 | 4874 | 5664 |
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