Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-19 | 275/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.89 (657.6) | 28.66 (728) | 2.77 (70.4) 10.7% |
| Width inches (mm) | 4.92 (125) | 10.83 (275) | 5.91 (150) 120% |
| Circum. inches (mm) | 81.34 (2065.91) | 90.04 (2287.08) | 8.71 (221.17) 10.7% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 4.33 (110) | 0.89 (22.5) 25.7% |
| Revolutions per mile (km) | 779 (484.05) | 703.67 (437.24) | -75.33 (-46.81) -9.7% |
275/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.14 mph (35.63 km/h) |
| 25 mph (40.23 km/h) | 27.68 mph (44.54 km/h) |
| 30 mph (48.28 km/h) | 33.21 mph (53.45 km/h) |
| 35 mph (56.33 km/h) | 38.75 mph (62.36 km/h) |
| 40 mph (64.37 km/h) | 44.28 mph (71.27 km/h) |
| 45 mph (72.42 km/h) | 49.82 mph (80.17 km/h) |
| 50 mph (80.47 km/h) | 55.35 mph (89.08 km/h) |
| 55 mph (88.51 km/h) | 60.89 mph (97.99 km/h) |
| 60 mph (96.56 km/h) | 66.42 mph (106.9 km/h) |
| 65 mph (104.61 km/h) | 71.96 mph (115.81 km/h) |
| 70 mph (112.65 km/h) | 77.49 mph (124.71 km/h) |
| 75 mph (120.7 km/h) | 83.03 mph (133.62 km/h) |
| 80 mph (128.75 km/h) | 88.56 mph (142.53 km/h) |
| 85 mph (136.79 km/h) | 94.1 mph (151.44 km/h) |
| 90 mph (144.84 km/h) | 99.64 mph (160.35 km/h) |
| 95 mph (152.89 km/h) | 105.17 mph (169.26 km/h) |
| 100 mph (160.93 km/h) | 110.71 mph (178.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1791 | 2080 | 2240 | 2339 | 2446 | 2522 | 2606 | 2705 | 2842 | 2979 | 3132 | 3254 | 3475 | 3719 | 3909 | 4031 | 4100 | 4351 | 4702 | 5464 |
Better Fuel Economy Factory Ratios Increased Power
