Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/80-15 | 115/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.24 (565) | 22.7 (576.5) | 0.45 (11.5) 2% |
| Width inches (mm) | 4.53 (115) | 4.53 (115) | 0 (0) 0% |
| Circum. inches (mm) | 69.88 (1775) | 71.3 (1811.13) | 1.42 (36.13) 2% |
| Sidewall Height inches (mm) | 3.62 (92) | 3.85 (97.75) | 0.23 (5.75) 6.2% |
| Revolutions per mile (km) | 906.67 (563.38) | 888.59 (552.14) | -18.09 (-11.24) -2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.41 mph (32.84 km/h) |
| 25 mph (40.23 km/h) | 25.51 mph (41.05 km/h) |
| 30 mph (48.28 km/h) | 30.61 mph (49.26 km/h) |
| 35 mph (56.33 km/h) | 35.71 mph (57.47 km/h) |
| 40 mph (64.37 km/h) | 40.81 mph (65.68 km/h) |
| 45 mph (72.42 km/h) | 45.92 mph (73.89 km/h) |
| 50 mph (80.47 km/h) | 51.02 mph (82.11 km/h) |
| 55 mph (88.51 km/h) | 56.12 mph (90.32 km/h) |
| 60 mph (96.56 km/h) | 61.22 mph (98.53 km/h) |
| 65 mph (104.61 km/h) | 66.32 mph (106.74 km/h) |
| 70 mph (112.65 km/h) | 71.42 mph (114.95 km/h) |
| 75 mph (120.7 km/h) | 76.53 mph (123.16 km/h) |
| 80 mph (128.75 km/h) | 81.63 mph (131.37 km/h) |
| 85 mph (136.79 km/h) | 86.73 mph (139.58 km/h) |
| 90 mph (144.84 km/h) | 91.83 mph (147.79 km/h) |
| 95 mph (152.89 km/h) | 96.93 mph (156 km/h) |
| 100 mph (160.93 km/h) | 102.04 mph (164.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2261 | 2627 | 2829 | 2954 | 3089 | 3185 | 3291 | 3416 | 3589 | 3762 | 3955 | 4109 | 4388 | 4696 | 4936 | 5090 | 5177 | 5494 | 5937 | 6899 |
Better Fuel Economy Factory Ratios Increased Power
