Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/30-21 | 275/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.26 (692.4) | 28.58 (725.9) | 1.32 (33.5) 4.8% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 85.64 (2175.24) | 89.78 (2280.48) | 4.14 (105.24) 4.8% |
| Sidewall Height inches (mm) | 3.13 (79.5) | 3.79 (96.25) | 0.66 (16.75) 21.1% |
| Revolutions per mile (km) | 739.85 (459.72) | 705.7 (438.5) | -34.14 (-21.22) -4.6% |
275/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.97 mph (33.74 km/h) |
| 25 mph (40.23 km/h) | 26.21 mph (42.18 km/h) |
| 30 mph (48.28 km/h) | 31.45 mph (50.62 km/h) |
| 35 mph (56.33 km/h) | 36.69 mph (59.05 km/h) |
| 40 mph (64.37 km/h) | 41.94 mph (67.49 km/h) |
| 45 mph (72.42 km/h) | 47.18 mph (75.92 km/h) |
| 50 mph (80.47 km/h) | 52.42 mph (84.36 km/h) |
| 55 mph (88.51 km/h) | 57.66 mph (92.8 km/h) |
| 60 mph (96.56 km/h) | 62.9 mph (101.23 km/h) |
| 65 mph (104.61 km/h) | 68.14 mph (109.67 km/h) |
| 70 mph (112.65 km/h) | 73.39 mph (118.1 km/h) |
| 75 mph (120.7 km/h) | 78.63 mph (126.54 km/h) |
| 80 mph (128.75 km/h) | 83.87 mph (134.98 km/h) |
| 85 mph (136.79 km/h) | 89.11 mph (143.41 km/h) |
| 90 mph (144.84 km/h) | 94.35 mph (151.85 km/h) |
| 95 mph (152.89 km/h) | 99.6 mph (160.29 km/h) |
| 100 mph (160.93 km/h) | 104.84 mph (168.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1796 | 2086 | 2247 | 2346 | 2453 | 2530 | 2614 | 2713 | 2850 | 2988 | 3141 | 3263 | 3485 | 3729 | 3920 | 4043 | 4111 | 4364 | 4715 | 5479 |
Better Fuel Economy Factory Ratios Increased Power
