Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-21 | 265/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.2 (716.4) | 28.3 (718.9) | 0.1 (2.5) 0.3% |
| Width inches (mm) | 12.01 (305) | 10.43 (265) | -1.57 (-40) -13.1% |
| Circum. inches (mm) | 88.61 (2250.64) | 88.92 (2258.49) | 0.31 (7.85) 0.3% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 3.65 (92.75) | 0.05 (1.25) 1.4% |
| Revolutions per mile (km) | 715.06 (444.32) | 712.57 (442.77) | -2.49 (-1.55) -0.3% |
265/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.07 mph (32.3 km/h) |
| 25 mph (40.23 km/h) | 25.09 mph (40.37 km/h) |
| 30 mph (48.28 km/h) | 30.1 mph (48.45 km/h) |
| 35 mph (56.33 km/h) | 35.12 mph (56.52 km/h) |
| 40 mph (64.37 km/h) | 40.14 mph (64.6 km/h) |
| 45 mph (72.42 km/h) | 45.16 mph (72.67 km/h) |
| 50 mph (80.47 km/h) | 50.17 mph (80.75 km/h) |
| 55 mph (88.51 km/h) | 55.19 mph (88.82 km/h) |
| 60 mph (96.56 km/h) | 60.21 mph (96.9 km/h) |
| 65 mph (104.61 km/h) | 65.23 mph (104.97 km/h) |
| 70 mph (112.65 km/h) | 70.24 mph (113.05 km/h) |
| 75 mph (120.7 km/h) | 75.26 mph (121.12 km/h) |
| 80 mph (128.75 km/h) | 80.28 mph (129.2 km/h) |
| 85 mph (136.79 km/h) | 85.3 mph (137.27 km/h) |
| 90 mph (144.84 km/h) | 90.31 mph (145.35 km/h) |
| 95 mph (152.89 km/h) | 95.33 mph (153.42 km/h) |
| 100 mph (160.93 km/h) | 100.35 mph (161.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1813 | 2107 | 2269 | 2369 | 2477 | 2554 | 2639 | 2739 | 2878 | 3017 | 3171 | 3295 | 3519 | 3766 | 3959 | 4082 | 4151 | 4406 | 4761 | 5533 |
Better Fuel Economy Factory Ratios Increased Power
