Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/35-15 | 255/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.58 (573.5) | 29.04 (737.7) | 6.46 (164.2) 28.6% |
| Width inches (mm) | 10.83 (275) | 10.04 (255) | -0.79 (-20) -7.3% |
| Circum. inches (mm) | 70.93 (1801.7) | 91.24 (2317.55) | 20.31 (515.85) 28.6% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 5.52 (140.25) | 1.73 (44) 45.7% |
| Revolutions per mile (km) | 893.23 (555.03) | 694.42 (431.49) | -198.82 (-123.54) -22.3% |
255/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.73 mph (41.4 km/h) |
| 25 mph (40.23 km/h) | 32.16 mph (51.75 km/h) |
| 30 mph (48.28 km/h) | 38.59 mph (62.1 km/h) |
| 35 mph (56.33 km/h) | 45.02 mph (72.45 km/h) |
| 40 mph (64.37 km/h) | 51.45 mph (82.8 km/h) |
| 45 mph (72.42 km/h) | 57.88 mph (93.16 km/h) |
| 50 mph (80.47 km/h) | 64.32 mph (103.51 km/h) |
| 55 mph (88.51 km/h) | 70.75 mph (113.86 km/h) |
| 60 mph (96.56 km/h) | 77.18 mph (124.21 km/h) |
| 65 mph (104.61 km/h) | 83.61 mph (134.56 km/h) |
| 70 mph (112.65 km/h) | 90.04 mph (144.91 km/h) |
| 75 mph (120.7 km/h) | 96.47 mph (155.26 km/h) |
| 80 mph (128.75 km/h) | 102.9 mph (165.61 km/h) |
| 85 mph (136.79 km/h) | 109.34 mph (175.96 km/h) |
| 90 mph (144.84 km/h) | 115.77 mph (186.31 km/h) |
| 95 mph (152.89 km/h) | 122.2 mph (196.66 km/h) |
| 100 mph (160.93 km/h) | 128.63 mph (207.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1767 | 2053 | 2211 | 2309 | 2414 | 2489 | 2572 | 2670 | 2805 | 2940 | 3091 | 3211 | 3429 | 3670 | 3858 | 3978 | 4046 | 4294 | 4640 | 5392 |
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