Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 220/65-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 23.26 (590.8) | 1.61 (41) 7.5% |
| Width inches (mm) | 6.89 (175) | 8.66 (220) | 1.77 (45) 25.7% |
| Circum. inches (mm) | 68 (1727.25) | 73.07 (1856.05) | 5.07 (128.81) 7.5% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 5.63 (143) | 0.81 (20.5) 16.7% |
| Revolutions per mile (km) | 931.74 (578.95) | 867.08 (538.78) | -64.66 (-40.18) -6.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.49 mph (34.59 km/h) |
| 25 mph (40.23 km/h) | 26.86 mph (43.23 km/h) |
| 30 mph (48.28 km/h) | 32.24 mph (51.88 km/h) |
| 35 mph (56.33 km/h) | 37.61 mph (60.53 km/h) |
| 40 mph (64.37 km/h) | 42.98 mph (69.17 km/h) |
| 45 mph (72.42 km/h) | 48.36 mph (77.82 km/h) |
| 50 mph (80.47 km/h) | 53.73 mph (86.47 km/h) |
| 55 mph (88.51 km/h) | 59.1 mph (95.11 km/h) |
| 60 mph (96.56 km/h) | 64.47 mph (103.76 km/h) |
| 65 mph (104.61 km/h) | 69.85 mph (112.41 km/h) |
| 70 mph (112.65 km/h) | 75.22 mph (121.06 km/h) |
| 75 mph (120.7 km/h) | 80.59 mph (129.7 km/h) |
| 80 mph (128.75 km/h) | 85.97 mph (138.35 km/h) |
| 85 mph (136.79 km/h) | 91.34 mph (147 km/h) |
| 90 mph (144.84 km/h) | 96.71 mph (155.64 km/h) |
| 95 mph (152.89 km/h) | 102.08 mph (164.29 km/h) |
| 100 mph (160.93 km/h) | 107.46 mph (172.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2207 | 2563 | 2761 | 2883 | 3014 | 3108 | 3211 | 3333 | 3502 | 3671 | 3859 | 4009 | 4282 | 4582 | 4817 | 4967 | 5052 | 5361 | 5793 | 6732 |
Better Fuel Economy Factory Ratios Increased Power
