Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/35-18 | 275/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.65 (600.7) | 27.74 (704.7) | 4.09 (104) 17.3% |
| Width inches (mm) | 8.07 (205) | 10.83 (275) | 2.76 (70) 34.1% |
| Circum. inches (mm) | 74.3 (1887.15) | 87.16 (2213.88) | 12.86 (326.73) 17.3% |
| Sidewall Height inches (mm) | 2.82 (71.75) | 4.87 (123.75) | 2.05 (52) 72.5% |
| Revolutions per mile (km) | 852.79 (529.9) | 726.93 (451.69) | -125.85 (-78.2) -14.8% |
275/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.46 mph (37.76 km/h) |
| 25 mph (40.23 km/h) | 29.33 mph (47.2 km/h) |
| 30 mph (48.28 km/h) | 35.19 mph (56.64 km/h) |
| 35 mph (56.33 km/h) | 41.06 mph (66.08 km/h) |
| 40 mph (64.37 km/h) | 46.93 mph (75.52 km/h) |
| 45 mph (72.42 km/h) | 52.79 mph (84.96 km/h) |
| 50 mph (80.47 km/h) | 58.66 mph (94.4 km/h) |
| 55 mph (88.51 km/h) | 64.52 mph (103.84 km/h) |
| 60 mph (96.56 km/h) | 70.39 mph (113.28 km/h) |
| 65 mph (104.61 km/h) | 76.25 mph (122.72 km/h) |
| 70 mph (112.65 km/h) | 82.12 mph (132.16 km/h) |
| 75 mph (120.7 km/h) | 87.98 mph (141.6 km/h) |
| 80 mph (128.75 km/h) | 93.85 mph (151.04 km/h) |
| 85 mph (136.79 km/h) | 99.72 mph (160.48 km/h) |
| 90 mph (144.84 km/h) | 105.58 mph (169.92 km/h) |
| 95 mph (152.89 km/h) | 111.45 mph (179.36 km/h) |
| 100 mph (160.93 km/h) | 117.31 mph (188.8 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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