Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-19 | 235/20-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.77 (654.6) | 24.7 (627.4) | -1.07 (-27.2) -4.2% |
| Width inches (mm) | 8.46 (215) | 9.25 (235) | 0.79 (20) 9.3% |
| Circum. inches (mm) | 80.96 (2056.49) | 77.6 (1971.04) | -3.36 (-85.45) -4.2% |
| Sidewall Height inches (mm) | 3.39 (86) | 1.85 (47) | -1.54 (-39) -45.3% |
| Revolutions per mile (km) | 782.57 (486.27) | 816.5 (507.35) | 33.93 (21.08) 4.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.17 mph (30.85 km/h) |
| 25 mph (40.23 km/h) | 23.96 mph (38.56 km/h) |
| 30 mph (48.28 km/h) | 28.75 mph (46.27 km/h) |
| 35 mph (56.33 km/h) | 33.55 mph (53.99 km/h) |
| 40 mph (64.37 km/h) | 38.34 mph (61.7 km/h) |
| 45 mph (72.42 km/h) | 43.13 mph (69.41 km/h) |
| 50 mph (80.47 km/h) | 47.92 mph (77.12 km/h) |
| 55 mph (88.51 km/h) | 52.71 mph (84.84 km/h) |
| 60 mph (96.56 km/h) | 57.51 mph (92.55 km/h) |
| 65 mph (104.61 km/h) | 62.3 mph (100.26 km/h) |
| 70 mph (112.65 km/h) | 67.09 mph (107.97 km/h) |
| 75 mph (120.7 km/h) | 71.88 mph (115.69 km/h) |
| 80 mph (128.75 km/h) | 76.68 mph (123.4 km/h) |
| 85 mph (136.79 km/h) | 81.47 mph (131.11 km/h) |
| 90 mph (144.84 km/h) | 86.26 mph (138.82 km/h) |
| 95 mph (152.89 km/h) | 91.05 mph (146.54 km/h) |
| 100 mph (160.93 km/h) | 95.84 mph (154.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2078 | 2414 | 2599 | 2714 | 2838 | 2927 | 3024 | 3139 | 3298 | 3457 | 3634 | 3775 | 4032 | 4315 | 4536 | 4677 | 4757 | 5049 | 5455 | 6340 |
Better Fuel Economy Factory Ratios Increased Power
