Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/85-16 | 205/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.37 (618.9) | 26.88 (682.7) | 2.51 (63.8) 10.3% |
| Width inches (mm) | 4.92 (125) | 8.07 (205) | 3.15 (80) 64% |
| Circum. inches (mm) | 76.55 (1944.33) | 84.44 (2144.77) | 7.89 (200.43) 10.3% |
| Sidewall Height inches (mm) | 4.18 (106.25) | 4.44 (112.75) | 0.26 (6.5) 6.1% |
| Revolutions per mile (km) | 827.71 (514.31) | 750.36 (466.25) | -77.35 (-48.06) -9.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.06 mph (35.5 km/h) |
| 25 mph (40.23 km/h) | 27.58 mph (44.38 km/h) |
| 30 mph (48.28 km/h) | 33.09 mph (53.26 km/h) |
| 35 mph (56.33 km/h) | 38.61 mph (62.13 km/h) |
| 40 mph (64.37 km/h) | 44.12 mph (71.01 km/h) |
| 45 mph (72.42 km/h) | 49.64 mph (79.89 km/h) |
| 50 mph (80.47 km/h) | 55.15 mph (88.76 km/h) |
| 55 mph (88.51 km/h) | 60.67 mph (97.64 km/h) |
| 60 mph (96.56 km/h) | 66.19 mph (106.51 km/h) |
| 65 mph (104.61 km/h) | 71.7 mph (115.39 km/h) |
| 70 mph (112.65 km/h) | 77.22 mph (124.27 km/h) |
| 75 mph (120.7 km/h) | 82.73 mph (133.14 km/h) |
| 80 mph (128.75 km/h) | 88.25 mph (142.02 km/h) |
| 85 mph (136.79 km/h) | 93.76 mph (150.9 km/h) |
| 90 mph (144.84 km/h) | 99.28 mph (159.77 km/h) |
| 95 mph (152.89 km/h) | 104.79 mph (168.65 km/h) |
| 100 mph (160.93 km/h) | 110.31 mph (177.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910 | 2218 | 2389 | 2495 | 2608 | 2690 | 2779 | 2885 | 3031 | 3177 | 3340 | 3470 | 3705 | 3965 | 4168 | 4298 | 4372 | 4640 | 5014 | 5826 |
Better Fuel Economy Factory Ratios Increased Power
