Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/30-21 | 265/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.73 (704.4) | 28.3 (718.9) | 0.57 (14.5) 2.1% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 87.12 (2212.94) | 88.92 (2258.49) | 1.79 (45.55) 2.1% |
| Sidewall Height inches (mm) | 3.37 (85.5) | 3.65 (92.75) | 0.29 (7.25) 8.5% |
| Revolutions per mile (km) | 727.24 (451.89) | 712.57 (442.77) | -14.67 (-9.11) -2% |
265/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.41 mph (32.85 km/h) |
| 25 mph (40.23 km/h) | 25.51 mph (41.06 km/h) |
| 30 mph (48.28 km/h) | 30.62 mph (49.27 km/h) |
| 35 mph (56.33 km/h) | 35.72 mph (57.49 km/h) |
| 40 mph (64.37 km/h) | 40.82 mph (65.7 km/h) |
| 45 mph (72.42 km/h) | 45.93 mph (73.91 km/h) |
| 50 mph (80.47 km/h) | 51.03 mph (82.12 km/h) |
| 55 mph (88.51 km/h) | 56.13 mph (90.34 km/h) |
| 60 mph (96.56 km/h) | 61.24 mph (98.55 km/h) |
| 65 mph (104.61 km/h) | 66.34 mph (106.76 km/h) |
| 70 mph (112.65 km/h) | 71.44 mph (114.97 km/h) |
| 75 mph (120.7 km/h) | 76.54 mph (123.19 km/h) |
| 80 mph (128.75 km/h) | 81.65 mph (131.4 km/h) |
| 85 mph (136.79 km/h) | 86.75 mph (139.61 km/h) |
| 90 mph (144.84 km/h) | 91.85 mph (147.82 km/h) |
| 95 mph (152.89 km/h) | 96.96 mph (156.04 km/h) |
| 100 mph (160.93 km/h) | 102.06 mph (164.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
