Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 115/85-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 21.7 (551.1) | 0.36 (9.1) 1.7% |
| Width inches (mm) | 4.53 (115) | 4.53 (115) | 0 (0) 0% |
| Circum. inches (mm) | 67.04 (1702.74) | 68.16 (1731.33) | 1.13 (28.59) 1.7% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.85 (97.75) | 0.68 (17.25) 21.4% |
| Revolutions per mile (km) | 945.15 (587.29) | 929.54 (577.59) | -15.61 (-9.7) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.73 km/h) |
| 25 mph (40.23 km/h) | 25.42 mph (40.91 km/h) |
| 30 mph (48.28 km/h) | 30.5 mph (49.09 km/h) |
| 35 mph (56.33 km/h) | 35.59 mph (57.27 km/h) |
| 40 mph (64.37 km/h) | 40.67 mph (65.45 km/h) |
| 45 mph (72.42 km/h) | 45.76 mph (73.64 km/h) |
| 50 mph (80.47 km/h) | 50.84 mph (81.82 km/h) |
| 55 mph (88.51 km/h) | 55.92 mph (90 km/h) |
| 60 mph (96.56 km/h) | 61.01 mph (98.18 km/h) |
| 65 mph (104.61 km/h) | 66.09 mph (106.36 km/h) |
| 70 mph (112.65 km/h) | 71.18 mph (114.55 km/h) |
| 75 mph (120.7 km/h) | 76.26 mph (122.73 km/h) |
| 80 mph (128.75 km/h) | 81.34 mph (130.91 km/h) |
| 85 mph (136.79 km/h) | 86.43 mph (139.09 km/h) |
| 90 mph (144.84 km/h) | 91.51 mph (147.27 km/h) |
| 95 mph (152.89 km/h) | 96.6 mph (155.45 km/h) |
| 100 mph (160.93 km/h) | 101.68 mph (163.64 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
