Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-15 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.87 (581) | 29.1 (739.2) | 6.23 (158.2) 27.2% |
| Width inches (mm) | 4.92 (125) | 9.25 (235) | 4.33 (110) 88% |
| Circum. inches (mm) | 71.86 (1825.27) | 91.43 (2322.27) | 19.57 (497) 27.2% |
| Sidewall Height inches (mm) | 3.94 (100) | 5.55 (141) | 1.61 (41) 41% |
| Revolutions per mile (km) | 881.7 (547.86) | 693.01 (430.61) | -188.7 (-117.25) -21.4% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.45 mph (40.95 km/h) |
| 25 mph (40.23 km/h) | 31.81 mph (51.19 km/h) |
| 30 mph (48.28 km/h) | 38.17 mph (61.43 km/h) |
| 35 mph (56.33 km/h) | 44.53 mph (71.66 km/h) |
| 40 mph (64.37 km/h) | 50.89 mph (81.9 km/h) |
| 45 mph (72.42 km/h) | 57.25 mph (92.14 km/h) |
| 50 mph (80.47 km/h) | 63.61 mph (102.38 km/h) |
| 55 mph (88.51 km/h) | 69.98 mph (112.62 km/h) |
| 60 mph (96.56 km/h) | 76.34 mph (122.85 km/h) |
| 65 mph (104.61 km/h) | 82.7 mph (133.09 km/h) |
| 70 mph (112.65 km/h) | 89.06 mph (143.33 km/h) |
| 75 mph (120.7 km/h) | 95.42 mph (153.57 km/h) |
| 80 mph (128.75 km/h) | 101.78 mph (163.8 km/h) |
| 85 mph (136.79 km/h) | 108.14 mph (174.04 km/h) |
| 90 mph (144.84 km/h) | 114.51 mph (184.28 km/h) |
| 95 mph (152.89 km/h) | 120.87 mph (194.52 km/h) |
| 100 mph (160.93 km/h) | 127.23 mph (204.76 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
