Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-14 | 185/85-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.54 (572.6) | 26.38 (670.1) | 3.84 (97.5) 17% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 70.82 (1798.88) | 82.88 (2105.18) | 12.06 (306.31) 17% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 6.19 (157.25) | 1.92 (48.75) 44.9% |
| Revolutions per mile (km) | 894.64 (555.9) | 764.47 (475.02) | -130.17 (-80.88) -14.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.41 mph (37.67 km/h) |
| 25 mph (40.23 km/h) | 29.26 mph (47.08 km/h) |
| 30 mph (48.28 km/h) | 35.11 mph (56.5 km/h) |
| 35 mph (56.33 km/h) | 40.96 mph (65.92 km/h) |
| 40 mph (64.37 km/h) | 46.81 mph (75.34 km/h) |
| 45 mph (72.42 km/h) | 52.66 mph (84.75 km/h) |
| 50 mph (80.47 km/h) | 58.51 mph (94.17 km/h) |
| 55 mph (88.51 km/h) | 64.37 mph (103.59 km/h) |
| 60 mph (96.56 km/h) | 70.22 mph (113 km/h) |
| 65 mph (104.61 km/h) | 76.07 mph (122.42 km/h) |
| 70 mph (112.65 km/h) | 81.92 mph (131.84 km/h) |
| 75 mph (120.7 km/h) | 87.77 mph (141.25 km/h) |
| 80 mph (128.75 km/h) | 93.62 mph (150.67 km/h) |
| 85 mph (136.79 km/h) | 99.47 mph (160.09 km/h) |
| 90 mph (144.84 km/h) | 105.32 mph (169.5 km/h) |
| 95 mph (152.89 km/h) | 111.18 mph (178.92 km/h) |
| 100 mph (160.93 km/h) | 117.03 mph (188.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1945 | 2260 | 2434 | 2541 | 2657 | 2740 | 2831 | 2939 | 3088 | 3237 | 3402 | 3535 | 3775 | 4040 | 4247 | 4379 | 4454 | 4727 | 5108 | 5936 |
Better Fuel Economy Factory Ratios Increased Power
