Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 235/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 22.4 (569) | 0.63 (16) 2.9% |
| Width inches (mm) | 8.46 (215) | 9.25 (235) | 0.79 (20) 9.3% |
| Circum. inches (mm) | 68.4 (1737.3) | 70.38 (1787.57) | 1.98 (50.27) 2.9% |
| Sidewall Height inches (mm) | 3.39 (86) | 3.7 (94) | 0.31 (8) 9.3% |
| Revolutions per mile (km) | 926.35 (575.6) | 900.3 (559.42) | -26.05 (-16.19) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.58 mph (33.12 km/h) |
| 25 mph (40.23 km/h) | 25.72 mph (41.4 km/h) |
| 30 mph (48.28 km/h) | 30.87 mph (49.68 km/h) |
| 35 mph (56.33 km/h) | 36.01 mph (57.96 km/h) |
| 40 mph (64.37 km/h) | 41.16 mph (66.24 km/h) |
| 45 mph (72.42 km/h) | 46.3 mph (74.52 km/h) |
| 50 mph (80.47 km/h) | 51.45 mph (82.8 km/h) |
| 55 mph (88.51 km/h) | 56.59 mph (91.08 km/h) |
| 60 mph (96.56 km/h) | 61.74 mph (99.35 km/h) |
| 65 mph (104.61 km/h) | 66.88 mph (107.63 km/h) |
| 70 mph (112.65 km/h) | 72.03 mph (115.91 km/h) |
| 75 mph (120.7 km/h) | 77.17 mph (124.19 km/h) |
| 80 mph (128.75 km/h) | 82.31 mph (132.47 km/h) |
| 85 mph (136.79 km/h) | 87.46 mph (140.75 km/h) |
| 90 mph (144.84 km/h) | 92.6 mph (149.03 km/h) |
| 95 mph (152.89 km/h) | 97.75 mph (157.31 km/h) |
| 100 mph (160.93 km/h) | 102.89 mph (165.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2291 | 2662 | 2866 | 2993 | 3130 | 3227 | 3334 | 3461 | 3636 | 3812 | 4007 | 4163 | 4446 | 4758 | 5001 | 5157 | 5245 | 5567 | 6015 | 6990 |
Better Fuel Economy Factory Ratios Increased Power
