Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/70-13 | 155/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.2 (589.2) | 22.76 (578.2) | -0.43 (-11) -1.9% |
| Width inches (mm) | 7.28 (185) | 6.1 (155) | -1.18 (-30) -16.2% |
| Circum. inches (mm) | 72.88 (1851.03) | 71.51 (1816.47) | -1.36 (-34.56) -1.9% |
| Sidewall Height inches (mm) | 5.1 (129.5) | 4.88 (124) | -0.22 (-5.5) -4.2% |
| Revolutions per mile (km) | 869.43 (540.24) | 885.97 (550.52) | 16.54 (10.28) 1.9% |
155/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.59 km/h) |
| 25 mph (40.23 km/h) | 24.53 mph (39.48 km/h) |
| 30 mph (48.28 km/h) | 29.44 mph (47.38 km/h) |
| 35 mph (56.33 km/h) | 34.35 mph (55.28 km/h) |
| 40 mph (64.37 km/h) | 39.25 mph (63.17 km/h) |
| 45 mph (72.42 km/h) | 44.16 mph (71.07 km/h) |
| 50 mph (80.47 km/h) | 49.07 mph (78.97 km/h) |
| 55 mph (88.51 km/h) | 53.97 mph (86.86 km/h) |
| 60 mph (96.56 km/h) | 58.88 mph (94.76 km/h) |
| 65 mph (104.61 km/h) | 63.79 mph (102.65 km/h) |
| 70 mph (112.65 km/h) | 68.69 mph (110.55 km/h) |
| 75 mph (120.7 km/h) | 73.6 mph (118.45 km/h) |
| 80 mph (128.75 km/h) | 78.51 mph (126.34 km/h) |
| 85 mph (136.79 km/h) | 83.41 mph (134.24 km/h) |
| 90 mph (144.84 km/h) | 88.32 mph (142.14 km/h) |
| 95 mph (152.89 km/h) | 93.23 mph (150.03 km/h) |
| 100 mph (160.93 km/h) | 98.13 mph (157.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2255 | 2619 | 2821 | 2945 | 3080 | 3176 | 3281 | 3406 | 3579 | 3751 | 3943 | 4097 | 4375 | 4682 | 4922 | 5075 | 5162 | 5478 | 5920 | 6879 |
Better Fuel Economy Factory Ratios Increased Power
