Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-17 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.89 (606.8) | 29.1 (739.2) | 5.21 (132.4) 21.8% |
| Width inches (mm) | 4.92 (125) | 9.25 (235) | 4.33 (110) 88% |
| Circum. inches (mm) | 75.05 (1906.32) | 91.43 (2322.27) | 16.38 (415.95) 21.8% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 5.55 (141) | 2.11 (53.5) 61.1% |
| Revolutions per mile (km) | 844.22 (524.57) | 693.01 (430.61) | -151.21 (-93.96) -17.9% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.36 mph (39.21 km/h) |
| 25 mph (40.23 km/h) | 30.45 mph (49.01 km/h) |
| 30 mph (48.28 km/h) | 36.55 mph (58.81 km/h) |
| 35 mph (56.33 km/h) | 42.64 mph (68.62 km/h) |
| 40 mph (64.37 km/h) | 48.73 mph (78.42 km/h) |
| 45 mph (72.42 km/h) | 54.82 mph (88.22 km/h) |
| 50 mph (80.47 km/h) | 60.91 mph (98.02 km/h) |
| 55 mph (88.51 km/h) | 67 mph (107.83 km/h) |
| 60 mph (96.56 km/h) | 73.09 mph (117.63 km/h) |
| 65 mph (104.61 km/h) | 79.18 mph (127.43 km/h) |
| 70 mph (112.65 km/h) | 85.27 mph (137.23 km/h) |
| 75 mph (120.7 km/h) | 91.36 mph (147.04 km/h) |
| 80 mph (128.75 km/h) | 97.46 mph (156.84 km/h) |
| 85 mph (136.79 km/h) | 103.55 mph (166.64 km/h) |
| 90 mph (144.84 km/h) | 109.64 mph (176.44 km/h) |
| 95 mph (152.89 km/h) | 115.73 mph (186.25 km/h) |
| 100 mph (160.93 km/h) | 121.82 mph (196.05 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
