Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/50-18 | 245/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.04 (712.2) | 27.65 (702.2) | -0.39 (-10) -1.4% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 88.09 (2237.44) | 86.85 (2206.03) | -1.24 (-31.42) -1.4% |
| Sidewall Height inches (mm) | 5.02 (127.5) | 4.82 (122.5) | -0.2 (-5) -3.9% |
| Revolutions per mile (km) | 719.28 (446.94) | 729.52 (453.3) | 10.24 (6.36) 1.4% |
245/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.74 km/h) |
| 25 mph (40.23 km/h) | 24.65 mph (39.67 km/h) |
| 30 mph (48.28 km/h) | 29.58 mph (47.6 km/h) |
| 35 mph (56.33 km/h) | 34.51 mph (55.54 km/h) |
| 40 mph (64.37 km/h) | 39.44 mph (63.47 km/h) |
| 45 mph (72.42 km/h) | 44.37 mph (71.4 km/h) |
| 50 mph (80.47 km/h) | 49.3 mph (79.34 km/h) |
| 55 mph (88.51 km/h) | 54.23 mph (87.27 km/h) |
| 60 mph (96.56 km/h) | 59.16 mph (95.21 km/h) |
| 65 mph (104.61 km/h) | 64.09 mph (103.14 km/h) |
| 70 mph (112.65 km/h) | 69.02 mph (111.07 km/h) |
| 75 mph (120.7 km/h) | 73.95 mph (119.01 km/h) |
| 80 mph (128.75 km/h) | 78.88 mph (126.94 km/h) |
| 85 mph (136.79 km/h) | 83.81 mph (134.87 km/h) |
| 90 mph (144.84 km/h) | 88.74 mph (142.81 km/h) |
| 95 mph (152.89 km/h) | 93.67 mph (150.74 km/h) |
| 100 mph (160.93 km/h) | 98.6 mph (158.68 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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