Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/65-10 | 215/40-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.49 (520.5) | 18.77 (476.8) | -1.72 (-43.7) -8.4% |
| Width inches (mm) | 8.07 (205) | 8.46 (215) | 0.39 (10) 4.9% |
| Circum. inches (mm) | 64.38 (1635.2) | 58.97 (1497.91) | -5.41 (-137.29) -8.4% |
| Sidewall Height inches (mm) | 5.25 (133.25) | 3.39 (86) | -1.86 (-47.25) -35.5% |
| Revolutions per mile (km) | 984.19 (611.55) | 1074.39 (667.59) | 90.2 (56.05) 9.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.32 mph (29.48 km/h) |
| 25 mph (40.23 km/h) | 22.9 mph (36.86 km/h) |
| 30 mph (48.28 km/h) | 27.48 mph (44.23 km/h) |
| 35 mph (56.33 km/h) | 32.06 mph (51.6 km/h) |
| 40 mph (64.37 km/h) | 36.64 mph (58.97 km/h) |
| 45 mph (72.42 km/h) | 41.22 mph (66.34 km/h) |
| 50 mph (80.47 km/h) | 45.8 mph (73.71 km/h) |
| 55 mph (88.51 km/h) | 50.38 mph (81.08 km/h) |
| 60 mph (96.56 km/h) | 54.96 mph (88.45 km/h) |
| 65 mph (104.61 km/h) | 59.54 mph (95.82 km/h) |
| 70 mph (112.65 km/h) | 64.12 mph (103.2 km/h) |
| 75 mph (120.7 km/h) | 68.7 mph (110.57 km/h) |
| 80 mph (128.75 km/h) | 73.28 mph (117.94 km/h) |
| 85 mph (136.79 km/h) | 77.86 mph (125.31 km/h) |
| 90 mph (144.84 km/h) | 82.44 mph (132.68 km/h) |
| 95 mph (152.89 km/h) | 87.02 mph (140.05 km/h) |
| 100 mph (160.93 km/h) | 91.6 mph (147.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
