Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-21 | 235/60-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.97 (735.9) | 30.1 (764.6) | 1.13 (28.7) 3.9% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 91.02 (2311.9) | 94.57 (2402.06) | 3.55 (90.16) 3.9% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 5.55 (141) | 1.56 (39.75) 39.3% |
| Revolutions per mile (km) | 696.11 (432.54) | 669.98 (416.31) | -26.13 (-16.24) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.78 mph (33.44 km/h) |
| 25 mph (40.23 km/h) | 25.97 mph (41.8 km/h) |
| 30 mph (48.28 km/h) | 31.17 mph (50.16 km/h) |
| 35 mph (56.33 km/h) | 36.36 mph (58.52 km/h) |
| 40 mph (64.37 km/h) | 41.56 mph (66.88 km/h) |
| 45 mph (72.42 km/h) | 46.75 mph (75.25 km/h) |
| 50 mph (80.47 km/h) | 51.95 mph (83.61 km/h) |
| 55 mph (88.51 km/h) | 57.14 mph (91.97 km/h) |
| 60 mph (96.56 km/h) | 62.34 mph (100.33 km/h) |
| 65 mph (104.61 km/h) | 67.53 mph (108.69 km/h) |
| 70 mph (112.65 km/h) | 72.73 mph (117.05 km/h) |
| 75 mph (120.7 km/h) | 77.92 mph (125.41 km/h) |
| 80 mph (128.75 km/h) | 83.12 mph (133.77 km/h) |
| 85 mph (136.79 km/h) | 88.31 mph (142.13 km/h) |
| 90 mph (144.84 km/h) | 93.51 mph (150.49 km/h) |
| 95 mph (152.89 km/h) | 98.7 mph (158.85 km/h) |
| 100 mph (160.93 km/h) | 103.9 mph (167.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1705 | 1981 | 2133 | 2227 | 2329 | 2401 | 2481 | 2576 | 2706 | 2837 | 2982 | 3098 | 3308 | 3541 | 3722 | 3838 | 3903 | 4143 | 4476 | 5202 |
Better Fuel Economy Factory Ratios Increased Power
