Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/55-18 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.04 (737.7) | 29.1 (739.2) | 0.06 (1.5) 0.2% |
| Width inches (mm) | 10.04 (255) | 9.25 (235) | -0.79 (-20) -7.8% |
| Circum. inches (mm) | 91.24 (2317.55) | 91.43 (2322.27) | 0.19 (4.71) 0.2% |
| Sidewall Height inches (mm) | 5.52 (140.25) | 5.55 (141) | 0.03 (0.75) 0.5% |
| Revolutions per mile (km) | 694.42 (431.49) | 693.01 (430.61) | -1.41 (-0.88) -0.2% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.04 mph (32.25 km/h) |
| 25 mph (40.23 km/h) | 25.05 mph (40.32 km/h) |
| 30 mph (48.28 km/h) | 30.06 mph (48.38 km/h) |
| 35 mph (56.33 km/h) | 35.07 mph (56.44 km/h) |
| 40 mph (64.37 km/h) | 40.08 mph (64.5 km/h) |
| 45 mph (72.42 km/h) | 45.09 mph (72.57 km/h) |
| 50 mph (80.47 km/h) | 50.1 mph (80.63 km/h) |
| 55 mph (88.51 km/h) | 55.11 mph (88.69 km/h) |
| 60 mph (96.56 km/h) | 60.12 mph (96.76 km/h) |
| 65 mph (104.61 km/h) | 65.13 mph (104.82 km/h) |
| 70 mph (112.65 km/h) | 70.14 mph (112.88 km/h) |
| 75 mph (120.7 km/h) | 75.15 mph (120.95 km/h) |
| 80 mph (128.75 km/h) | 80.16 mph (129.01 km/h) |
| 85 mph (136.79 km/h) | 85.17 mph (137.07 km/h) |
| 90 mph (144.84 km/h) | 90.18 mph (145.14 km/h) |
| 95 mph (152.89 km/h) | 95.19 mph (153.2 km/h) |
| 100 mph (160.93 km/h) | 100.2 mph (161.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1764 | 2049 | 2206 | 2304 | 2409 | 2484 | 2567 | 2664 | 2799 | 2934 | 3084 | 3204 | 3422 | 3662 | 3850 | 3970 | 4037 | 4285 | 4630 | 5381 |
Better Fuel Economy Factory Ratios Increased Power
