Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-19 | 275/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.51 (724.1) | 27.74 (704.7) | -0.76 (-19.4) -2.7% |
| Width inches (mm) | 13.58 (345) | 10.83 (275) | -2.76 (-70) -20.3% |
| Circum. inches (mm) | 89.56 (2274.83) | 87.16 (2213.88) | -2.4 (-60.95) -2.7% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 4.87 (123.75) | 0.12 (3) 2.5% |
| Revolutions per mile (km) | 707.46 (439.59) | 726.93 (451.69) | 19.48 (12.1) 2.8% |
275/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.46 mph (31.32 km/h) |
| 25 mph (40.23 km/h) | 24.33 mph (39.16 km/h) |
| 30 mph (48.28 km/h) | 29.2 mph (46.99 km/h) |
| 35 mph (56.33 km/h) | 34.06 mph (54.82 km/h) |
| 40 mph (64.37 km/h) | 38.93 mph (62.65 km/h) |
| 45 mph (72.42 km/h) | 43.79 mph (70.48 km/h) |
| 50 mph (80.47 km/h) | 48.66 mph (78.31 km/h) |
| 55 mph (88.51 km/h) | 53.53 mph (86.14 km/h) |
| 60 mph (96.56 km/h) | 58.39 mph (93.97 km/h) |
| 65 mph (104.61 km/h) | 63.26 mph (101.8 km/h) |
| 70 mph (112.65 km/h) | 68.12 mph (109.64 km/h) |
| 75 mph (120.7 km/h) | 72.99 mph (117.47 km/h) |
| 80 mph (128.75 km/h) | 77.86 mph (125.3 km/h) |
| 85 mph (136.79 km/h) | 82.72 mph (133.13 km/h) |
| 90 mph (144.84 km/h) | 87.59 mph (140.96 km/h) |
| 95 mph (152.89 km/h) | 92.45 mph (148.79 km/h) |
| 100 mph (160.93 km/h) | 97.32 mph (156.62 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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