Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-17 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.69 (728.8) | 29.1 (739.2) | 0.41 (10.4) 1.4% |
| Width inches (mm) | 6.5 (165) | 9.25 (235) | 2.76 (70) 42.4% |
| Circum. inches (mm) | 90.14 (2289.59) | 91.43 (2322.27) | 1.29 (32.67) 1.4% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 5.55 (141) | -0.3 (-7.5) -5.1% |
| Revolutions per mile (km) | 702.9 (436.76) | 693.01 (430.61) | -9.89 (-6.14) -1.4% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.29 mph (32.65 km/h) |
| 25 mph (40.23 km/h) | 25.36 mph (40.81 km/h) |
| 30 mph (48.28 km/h) | 30.43 mph (48.97 km/h) |
| 35 mph (56.33 km/h) | 35.5 mph (57.13 km/h) |
| 40 mph (64.37 km/h) | 40.57 mph (65.29 km/h) |
| 45 mph (72.42 km/h) | 45.64 mph (73.45 km/h) |
| 50 mph (80.47 km/h) | 50.71 mph (81.62 km/h) |
| 55 mph (88.51 km/h) | 55.78 mph (89.78 km/h) |
| 60 mph (96.56 km/h) | 60.86 mph (97.94 km/h) |
| 65 mph (104.61 km/h) | 65.93 mph (106.1 km/h) |
| 70 mph (112.65 km/h) | 71 mph (114.26 km/h) |
| 75 mph (120.7 km/h) | 76.07 mph (122.42 km/h) |
| 80 mph (128.75 km/h) | 81.14 mph (130.59 km/h) |
| 85 mph (136.79 km/h) | 86.21 mph (138.75 km/h) |
| 90 mph (144.84 km/h) | 91.28 mph (146.91 km/h) |
| 95 mph (152.89 km/h) | 96.36 mph (155.07 km/h) |
| 100 mph (160.93 km/h) | 101.43 mph (163.23 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
