Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-16 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.57 (649.4) | 29.1 (739.2) | 3.54 (89.8) 13.8% |
| Width inches (mm) | 5.31 (135) | 9.25 (235) | 3.94 (100) 74.1% |
| Circum. inches (mm) | 80.32 (2040.15) | 91.43 (2322.27) | 11.11 (282.12) 13.8% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 5.55 (141) | 0.77 (19.5) 16% |
| Revolutions per mile (km) | 788.84 (490.16) | 693.01 (430.61) | -95.83 (-59.55) -12.1% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.77 mph (36.64 km/h) |
| 25 mph (40.23 km/h) | 28.46 mph (45.8 km/h) |
| 30 mph (48.28 km/h) | 34.15 mph (54.96 km/h) |
| 35 mph (56.33 km/h) | 39.84 mph (64.12 km/h) |
| 40 mph (64.37 km/h) | 45.53 mph (73.28 km/h) |
| 45 mph (72.42 km/h) | 51.22 mph (82.44 km/h) |
| 50 mph (80.47 km/h) | 56.91 mph (91.59 km/h) |
| 55 mph (88.51 km/h) | 62.61 mph (100.75 km/h) |
| 60 mph (96.56 km/h) | 68.3 mph (109.91 km/h) |
| 65 mph (104.61 km/h) | 73.99 mph (119.07 km/h) |
| 70 mph (112.65 km/h) | 79.68 mph (128.23 km/h) |
| 75 mph (120.7 km/h) | 85.37 mph (137.39 km/h) |
| 80 mph (128.75 km/h) | 91.06 mph (146.55 km/h) |
| 85 mph (136.79 km/h) | 96.75 mph (155.71 km/h) |
| 90 mph (144.84 km/h) | 102.45 mph (164.87 km/h) |
| 95 mph (152.89 km/h) | 108.14 mph (174.03 km/h) |
| 100 mph (160.93 km/h) | 113.83 mph (183.19 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
