Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/60-16 | 255/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.63 (676.4) | 29.04 (737.7) | 2.41 (61.3) 9.1% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 83.66 (2124.97) | 91.24 (2317.55) | 7.58 (192.58) 9.1% |
| Sidewall Height inches (mm) | 5.31 (135) | 5.52 (140.25) | 0.21 (5.25) 3.9% |
| Revolutions per mile (km) | 757.35 (470.59) | 694.42 (431.49) | -62.93 (-39.1) -8.3% |
255/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.81 mph (35.1 km/h) |
| 25 mph (40.23 km/h) | 27.27 mph (43.88 km/h) |
| 30 mph (48.28 km/h) | 32.72 mph (52.66 km/h) |
| 35 mph (56.33 km/h) | 38.17 mph (61.43 km/h) |
| 40 mph (64.37 km/h) | 43.63 mph (70.21 km/h) |
| 45 mph (72.42 km/h) | 49.08 mph (78.98 km/h) |
| 50 mph (80.47 km/h) | 54.53 mph (87.76 km/h) |
| 55 mph (88.51 km/h) | 59.98 mph (96.54 km/h) |
| 60 mph (96.56 km/h) | 65.44 mph (105.31 km/h) |
| 65 mph (104.61 km/h) | 70.89 mph (114.09 km/h) |
| 70 mph (112.65 km/h) | 76.34 mph (122.86 km/h) |
| 75 mph (120.7 km/h) | 81.8 mph (131.64 km/h) |
| 80 mph (128.75 km/h) | 87.25 mph (140.42 km/h) |
| 85 mph (136.79 km/h) | 92.7 mph (149.19 km/h) |
| 90 mph (144.84 km/h) | 98.16 mph (157.97 km/h) |
| 95 mph (152.89 km/h) | 103.61 mph (166.74 km/h) |
| 100 mph (160.93 km/h) | 109.06 mph (175.52 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 |
Better Fuel Economy Factory Ratios Increased Power
