Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-15 | 195/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.87 (581) | 27.21 (691.2) | 4.34 (110.2) 19% |
| Width inches (mm) | 4.92 (125) | 7.68 (195) | 2.76 (70) 56% |
| Circum. inches (mm) | 71.86 (1825.27) | 85.49 (2171.47) | 13.63 (346.2) 19% |
| Sidewall Height inches (mm) | 3.94 (100) | 4.61 (117) | 0.67 (17) 17% |
| Revolutions per mile (km) | 881.7 (547.86) | 741.13 (460.52) | -140.57 (-87.35) -15.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.79 mph (38.29 km/h) |
| 25 mph (40.23 km/h) | 29.74 mph (47.86 km/h) |
| 30 mph (48.28 km/h) | 35.69 mph (57.44 km/h) |
| 35 mph (56.33 km/h) | 41.64 mph (67.01 km/h) |
| 40 mph (64.37 km/h) | 47.59 mph (76.58 km/h) |
| 45 mph (72.42 km/h) | 53.54 mph (86.16 km/h) |
| 50 mph (80.47 km/h) | 59.48 mph (95.73 km/h) |
| 55 mph (88.51 km/h) | 65.43 mph (105.3 km/h) |
| 60 mph (96.56 km/h) | 71.38 mph (114.88 km/h) |
| 65 mph (104.61 km/h) | 77.33 mph (124.45 km/h) |
| 70 mph (112.65 km/h) | 83.28 mph (134.02 km/h) |
| 75 mph (120.7 km/h) | 89.23 mph (143.59 km/h) |
| 80 mph (128.75 km/h) | 95.17 mph (153.17 km/h) |
| 85 mph (136.79 km/h) | 101.12 mph (162.74 km/h) |
| 90 mph (144.84 km/h) | 107.07 mph (172.31 km/h) |
| 95 mph (152.89 km/h) | 113.02 mph (181.89 km/h) |
| 100 mph (160.93 km/h) | 118.97 mph (191.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1886 | 2191 | 2360 | 2464 | 2576 | 2657 | 2745 | 2849 | 2994 | 3138 | 3299 | 3427 | 3660 | 3917 | 4117 | 4246 | 4318 | 4583 | 4952 | 5754 |
Better Fuel Economy Factory Ratios Increased Power
