Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/55-19 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.74 (730.1) | 29.1 (739.2) | 0.36 (9.1) 1.2% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 90.3 (2293.68) | 91.43 (2322.27) | 1.13 (28.59) 1.2% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 5.55 (141) | 0.68 (17.25) 13.9% |
| Revolutions per mile (km) | 701.64 (435.98) | 693.01 (430.61) | -8.64 (-5.37) -1.2% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.25 mph (32.59 km/h) |
| 25 mph (40.23 km/h) | 25.31 mph (40.74 km/h) |
| 30 mph (48.28 km/h) | 30.37 mph (48.88 km/h) |
| 35 mph (56.33 km/h) | 35.44 mph (57.03 km/h) |
| 40 mph (64.37 km/h) | 40.5 mph (65.18 km/h) |
| 45 mph (72.42 km/h) | 45.56 mph (73.32 km/h) |
| 50 mph (80.47 km/h) | 50.62 mph (81.47 km/h) |
| 55 mph (88.51 km/h) | 55.69 mph (89.62 km/h) |
| 60 mph (96.56 km/h) | 60.75 mph (97.76 km/h) |
| 65 mph (104.61 km/h) | 65.81 mph (105.91 km/h) |
| 70 mph (112.65 km/h) | 70.87 mph (114.06 km/h) |
| 75 mph (120.7 km/h) | 75.93 mph (122.21 km/h) |
| 80 mph (128.75 km/h) | 81 mph (130.35 km/h) |
| 85 mph (136.79 km/h) | 86.06 mph (138.5 km/h) |
| 90 mph (144.84 km/h) | 91.12 mph (146.65 km/h) |
| 95 mph (152.89 km/h) | 96.18 mph (154.79 km/h) |
| 100 mph (160.93 km/h) | 101.25 mph (162.94 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
