Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-14 | 90/90-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.34 (516.6) | 18.38 (466.8) | -1.96 (-49.8) -9.6% |
| Width inches (mm) | 4.53 (115) | 3.54 (90) | -0.98 (-25) -21.7% |
| Circum. inches (mm) | 63.9 (1622.95) | 57.74 (1466.5) | -6.16 (-156.45) -9.6% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.19 (81) | 0.02 (0.5) 0.6% |
| Revolutions per mile (km) | 991.62 (616.16) | 1097.41 (681.9) | 105.79 (65.73) 10.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.07 mph (29.08 km/h) |
| 25 mph (40.23 km/h) | 22.59 mph (36.36 km/h) |
| 30 mph (48.28 km/h) | 27.11 mph (43.63 km/h) |
| 35 mph (56.33 km/h) | 31.63 mph (50.9 km/h) |
| 40 mph (64.37 km/h) | 36.14 mph (58.17 km/h) |
| 45 mph (72.42 km/h) | 40.66 mph (65.44 km/h) |
| 50 mph (80.47 km/h) | 45.18 mph (72.71 km/h) |
| 55 mph (88.51 km/h) | 49.7 mph (79.98 km/h) |
| 60 mph (96.56 km/h) | 54.22 mph (87.25 km/h) |
| 65 mph (104.61 km/h) | 58.73 mph (94.52 km/h) |
| 70 mph (112.65 km/h) | 63.25 mph (101.79 km/h) |
| 75 mph (120.7 km/h) | 67.77 mph (109.07 km/h) |
| 80 mph (128.75 km/h) | 72.29 mph (116.34 km/h) |
| 85 mph (136.79 km/h) | 76.81 mph (123.61 km/h) |
| 90 mph (144.84 km/h) | 81.32 mph (130.88 km/h) |
| 95 mph (152.89 km/h) | 85.84 mph (138.15 km/h) |
| 100 mph (160.93 km/h) | 90.36 mph (145.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
