Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/70-15 | 185/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.47 (647) | 23.2 (589.2) | -2.28 (-57.8) -8.9% |
| Width inches (mm) | 7.48 (190) | 7.28 (185) | -0.2 (-5) -2.6% |
| Circum. inches (mm) | 80.02 (2032.61) | 72.88 (1851.03) | -7.15 (-181.58) -8.9% |
| Sidewall Height inches (mm) | 5.24 (133) | 5.1 (129.5) | -0.14 (-3.5) -2.6% |
| Revolutions per mile (km) | 791.76 (491.98) | 869.43 (540.24) | 77.67 (48.26) 9.8% |
185/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.21 mph (29.31 km/h) |
| 25 mph (40.23 km/h) | 22.77 mph (36.64 km/h) |
| 30 mph (48.28 km/h) | 27.32 mph (43.97 km/h) |
| 35 mph (56.33 km/h) | 31.87 mph (51.3 km/h) |
| 40 mph (64.37 km/h) | 36.43 mph (58.62 km/h) |
| 45 mph (72.42 km/h) | 40.98 mph (65.95 km/h) |
| 50 mph (80.47 km/h) | 45.53 mph (73.28 km/h) |
| 55 mph (88.51 km/h) | 50.09 mph (80.61 km/h) |
| 60 mph (96.56 km/h) | 54.64 mph (87.93 km/h) |
| 65 mph (104.61 km/h) | 59.19 mph (95.26 km/h) |
| 70 mph (112.65 km/h) | 63.75 mph (102.59 km/h) |
| 75 mph (120.7 km/h) | 68.3 mph (109.92 km/h) |
| 80 mph (128.75 km/h) | 72.85 mph (117.25 km/h) |
| 85 mph (136.79 km/h) | 77.41 mph (124.57 km/h) |
| 90 mph (144.84 km/h) | 81.96 mph (131.9 km/h) |
| 95 mph (152.89 km/h) | 86.51 mph (139.23 km/h) |
| 100 mph (160.93 km/h) | 91.07 mph (146.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2213 | 2570 | 2768 | 2890 | 3022 | 3116 | 3220 | 3342 | 3512 | 3681 | 3870 | 4020 | 4293 | 4595 | 4830 | 4981 | 5065 | 5376 | 5809 | 6751 |
Better Fuel Economy Factory Ratios Increased Power
