Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/65-18 | 245/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.03 (762.7) | 29.57 (751.2) | -0.45 (-11.5) -1.5% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 94.33 (2396.09) | 92.91 (2359.96) | -1.42 (-36.13) -1.5% |
| Sidewall Height inches (mm) | 6.01 (152.75) | 5.79 (147) | -0.23 (-5.75) -3.8% |
| Revolutions per mile (km) | 671.65 (417.35) | 681.94 (423.73) | 10.28 (6.39) 1.5% |
245/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.7 mph (31.7 km/h) |
| 25 mph (40.23 km/h) | 24.62 mph (39.63 km/h) |
| 30 mph (48.28 km/h) | 29.55 mph (47.55 km/h) |
| 35 mph (56.33 km/h) | 34.47 mph (55.48 km/h) |
| 40 mph (64.37 km/h) | 39.4 mph (63.4 km/h) |
| 45 mph (72.42 km/h) | 44.32 mph (71.33 km/h) |
| 50 mph (80.47 km/h) | 49.25 mph (79.25 km/h) |
| 55 mph (88.51 km/h) | 54.17 mph (87.18 km/h) |
| 60 mph (96.56 km/h) | 59.1 mph (95.1 km/h) |
| 65 mph (104.61 km/h) | 64.02 mph (103.03 km/h) |
| 70 mph (112.65 km/h) | 68.94 mph (110.96 km/h) |
| 75 mph (120.7 km/h) | 73.87 mph (118.88 km/h) |
| 80 mph (128.75 km/h) | 78.79 mph (126.81 km/h) |
| 85 mph (136.79 km/h) | 83.72 mph (134.73 km/h) |
| 90 mph (144.84 km/h) | 88.64 mph (142.66 km/h) |
| 95 mph (152.89 km/h) | 93.57 mph (150.58 km/h) |
| 100 mph (160.93 km/h) | 98.49 mph (158.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1735 | 2016 | 2171 | 2267 | 2370 | 2444 | 2526 | 2622 | 2754 | 2887 | 3035 | 3153 | 3367 | 3604 | 3788 | 3906 | 3973 | 4217 | 4556 | 5295 |
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