Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 115/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 19.34 (491.2) | -2 (-50.8) -9.4% |
| Width inches (mm) | 4.53 (115) | 4.53 (115) | 0 (0) 0% |
| Circum. inches (mm) | 67.04 (1702.74) | 60.75 (1543.15) | -6.28 (-159.59) -9.4% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.17 (80.5) | 0 (0) 0% |
| Revolutions per mile (km) | 945.15 (587.29) | 1042.9 (648.02) | 97.75 (60.74) 10.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.13 mph (29.17 km/h) |
| 25 mph (40.23 km/h) | 22.66 mph (36.46 km/h) |
| 30 mph (48.28 km/h) | 27.19 mph (43.76 km/h) |
| 35 mph (56.33 km/h) | 31.72 mph (51.05 km/h) |
| 40 mph (64.37 km/h) | 36.25 mph (58.34 km/h) |
| 45 mph (72.42 km/h) | 40.78 mph (65.63 km/h) |
| 50 mph (80.47 km/h) | 45.31 mph (72.93 km/h) |
| 55 mph (88.51 km/h) | 49.85 mph (80.22 km/h) |
| 60 mph (96.56 km/h) | 54.38 mph (87.51 km/h) |
| 65 mph (104.61 km/h) | 58.91 mph (94.8 km/h) |
| 70 mph (112.65 km/h) | 63.44 mph (102.1 km/h) |
| 75 mph (120.7 km/h) | 67.97 mph (109.39 km/h) |
| 80 mph (128.75 km/h) | 72.5 mph (116.68 km/h) |
| 85 mph (136.79 km/h) | 77.03 mph (123.97 km/h) |
| 90 mph (144.84 km/h) | 81.56 mph (131.27 km/h) |
| 95 mph (152.89 km/h) | 86.1 mph (138.56 km/h) |
| 100 mph (160.93 km/h) | 90.63 mph (145.85 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
