Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/45-18 | 235/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.39 (695.7) | 26.33 (668.7) | -1.06 (-27) -3.9% |
| Width inches (mm) | 10.43 (265) | 9.25 (235) | -1.18 (-30) -11.3% |
| Circum. inches (mm) | 86.05 (2185.61) | 82.71 (2100.78) | -3.34 (-84.82) -3.9% |
| Sidewall Height inches (mm) | 4.69 (119.25) | 4.16 (105.75) | -0.53 (-13.5) -11.3% |
| Revolutions per mile (km) | 736.34 (457.54) | 766.07 (476.01) | 29.73 (18.47) 4% |
235/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.22 mph (30.94 km/h) |
| 25 mph (40.23 km/h) | 24.03 mph (38.67 km/h) |
| 30 mph (48.28 km/h) | 28.84 mph (46.41 km/h) |
| 35 mph (56.33 km/h) | 33.64 mph (54.14 km/h) |
| 40 mph (64.37 km/h) | 38.45 mph (61.88 km/h) |
| 45 mph (72.42 km/h) | 43.25 mph (69.61 km/h) |
| 50 mph (80.47 km/h) | 48.06 mph (77.34 km/h) |
| 55 mph (88.51 km/h) | 52.87 mph (85.08 km/h) |
| 60 mph (96.56 km/h) | 57.67 mph (92.81 km/h) |
| 65 mph (104.61 km/h) | 62.48 mph (100.55 km/h) |
| 70 mph (112.65 km/h) | 67.28 mph (108.28 km/h) |
| 75 mph (120.7 km/h) | 72.09 mph (116.02 km/h) |
| 80 mph (128.75 km/h) | 76.9 mph (123.75 km/h) |
| 85 mph (136.79 km/h) | 81.7 mph (131.49 km/h) |
| 90 mph (144.84 km/h) | 86.51 mph (139.22 km/h) |
| 95 mph (152.89 km/h) | 91.31 mph (146.95 km/h) |
| 100 mph (160.93 km/h) | 96.12 mph (154.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1949 | 2265 | 2439 | 2547 | 2663 | 2746 | 2837 | 2945 | 3094 | 3244 | 3410 | 3542 | 3783 | 4048 | 4256 | 4388 | 4463 | 4737 | 5118 | 5948 |
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