Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 29.1 (739.2) | 3.78 (96) 14.9% |
| Width inches (mm) | 6.1 (155) | 9.25 (235) | 3.15 (80) 51.6% |
| Circum. inches (mm) | 79.55 (2020.67) | 91.43 (2322.27) | 11.87 (301.59) 14.9% |
| Sidewall Height inches (mm) | 3.66 (93) | 5.55 (141) | 1.89 (48) 51.6% |
| Revolutions per mile (km) | 796.44 (494.88) | 693.01 (430.61) | -103.43 (-64.27) -13% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.99 mph (36.99 km/h) |
| 25 mph (40.23 km/h) | 28.73 mph (46.24 km/h) |
| 30 mph (48.28 km/h) | 34.48 mph (55.49 km/h) |
| 35 mph (56.33 km/h) | 40.22 mph (64.73 km/h) |
| 40 mph (64.37 km/h) | 45.97 mph (73.98 km/h) |
| 45 mph (72.42 km/h) | 51.72 mph (83.23 km/h) |
| 50 mph (80.47 km/h) | 57.46 mph (92.48 km/h) |
| 55 mph (88.51 km/h) | 63.21 mph (101.73 km/h) |
| 60 mph (96.56 km/h) | 68.96 mph (110.97 km/h) |
| 65 mph (104.61 km/h) | 74.7 mph (120.22 km/h) |
| 70 mph (112.65 km/h) | 80.45 mph (129.47 km/h) |
| 75 mph (120.7 km/h) | 86.19 mph (138.72 km/h) |
| 80 mph (128.75 km/h) | 91.94 mph (147.96 km/h) |
| 85 mph (136.79 km/h) | 97.69 mph (157.21 km/h) |
| 90 mph (144.84 km/h) | 103.43 mph (166.46 km/h) |
| 95 mph (152.89 km/h) | 109.18 mph (175.71 km/h) |
| 100 mph (160.93 km/h) | 114.93 mph (184.95 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
