Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 205/25-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 22.04 (559.7) | 0.26 (6.7) 1.2% |
| Width inches (mm) | 8.46 (215) | 8.07 (205) | -0.39 (-10) -4.7% |
| Circum. inches (mm) | 68.4 (1737.3) | 69.23 (1758.35) | 0.83 (21.05) 1.2% |
| Sidewall Height inches (mm) | 3.39 (86) | 2.02 (51.25) | -1.37 (-34.75) -40.4% |
| Revolutions per mile (km) | 926.35 (575.6) | 915.26 (568.71) | -11.09 (-6.89) -1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.58 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.36 mph (48.87 km/h) |
| 35 mph (56.33 km/h) | 35.42 mph (57.01 km/h) |
| 40 mph (64.37 km/h) | 40.48 mph (65.15 km/h) |
| 45 mph (72.42 km/h) | 45.55 mph (73.3 km/h) |
| 50 mph (80.47 km/h) | 50.61 mph (81.44 km/h) |
| 55 mph (88.51 km/h) | 55.67 mph (89.59 km/h) |
| 60 mph (96.56 km/h) | 60.73 mph (97.73 km/h) |
| 65 mph (104.61 km/h) | 65.79 mph (105.87 km/h) |
| 70 mph (112.65 km/h) | 70.85 mph (114.02 km/h) |
| 75 mph (120.7 km/h) | 75.91 mph (122.16 km/h) |
| 80 mph (128.75 km/h) | 80.97 mph (130.31 km/h) |
| 85 mph (136.79 km/h) | 86.03 mph (138.45 km/h) |
| 90 mph (144.84 km/h) | 91.09 mph (146.6 km/h) |
| 95 mph (152.89 km/h) | 96.15 mph (154.74 km/h) |
| 100 mph (160.93 km/h) | 101.21 mph (162.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2329 | 2706 | 2914 | 3043 | 3182 | 3281 | 3390 | 3519 | 3697 | 3875 | 4074 | 4232 | 4520 | 4837 | 5085 | 5243 | 5332 | 5659 | 6115 | 7106 |
Better Fuel Economy Factory Ratios Increased Power
