Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-18 | 275/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.51 (698.7) | 27.74 (704.7) | 0.24 (6) 0.9% |
| Width inches (mm) | 13.58 (345) | 10.83 (275) | -2.76 (-70) -20.3% |
| Circum. inches (mm) | 86.42 (2195.03) | 87.16 (2213.88) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 4.87 (123.75) | 0.12 (3) 2.5% |
| Revolutions per mile (km) | 733.18 (455.57) | 726.93 (451.69) | -6.24 (-3.88) -0.9% |
275/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.17 mph (32.46 km/h) |
| 25 mph (40.23 km/h) | 25.21 mph (40.58 km/h) |
| 30 mph (48.28 km/h) | 30.26 mph (48.7 km/h) |
| 35 mph (56.33 km/h) | 35.3 mph (56.81 km/h) |
| 40 mph (64.37 km/h) | 40.34 mph (64.93 km/h) |
| 45 mph (72.42 km/h) | 45.39 mph (73.04 km/h) |
| 50 mph (80.47 km/h) | 50.43 mph (81.16 km/h) |
| 55 mph (88.51 km/h) | 55.47 mph (89.27 km/h) |
| 60 mph (96.56 km/h) | 60.52 mph (97.39 km/h) |
| 65 mph (104.61 km/h) | 65.56 mph (105.51 km/h) |
| 70 mph (112.65 km/h) | 70.6 mph (113.62 km/h) |
| 75 mph (120.7 km/h) | 75.64 mph (121.74 km/h) |
| 80 mph (128.75 km/h) | 80.69 mph (129.85 km/h) |
| 85 mph (136.79 km/h) | 85.73 mph (137.97 km/h) |
| 90 mph (144.84 km/h) | 90.77 mph (146.09 km/h) |
| 95 mph (152.89 km/h) | 95.82 mph (154.2 km/h) |
| 100 mph (160.93 km/h) | 100.86 mph (162.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1850 | 2149 | 2314 | 2417 | 2527 | 2606 | 2692 | 2795 | 2936 | 3078 | 3235 | 3361 | 3590 | 3842 | 4038 | 4164 | 4235 | 4495 | 4857 | 5644 |
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