Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/30-21 | 235/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.5 (698.4) | 27.48 (697.9) | -0.02 (-0.5) -0.1% |
| Width inches (mm) | 10.83 (275) | 9.25 (235) | -1.57 (-40) -14.5% |
| Circum. inches (mm) | 86.38 (2194.09) | 86.32 (2192.52) | -0.06 (-1.57) -0.1% |
| Sidewall Height inches (mm) | 3.25 (82.5) | 3.24 (82.25) | -0.01 (-0.25) -0.3% |
| Revolutions per mile (km) | 733.49 (455.77) | 734.02 (456.1) | 0.53 (0.33) 0.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.99 mph (32.16 km/h) |
| 25 mph (40.23 km/h) | 24.98 mph (40.2 km/h) |
| 30 mph (48.28 km/h) | 29.98 mph (48.25 km/h) |
| 35 mph (56.33 km/h) | 34.97 mph (56.29 km/h) |
| 40 mph (64.37 km/h) | 39.97 mph (64.33 km/h) |
| 45 mph (72.42 km/h) | 44.97 mph (72.37 km/h) |
| 50 mph (80.47 km/h) | 49.96 mph (80.41 km/h) |
| 55 mph (88.51 km/h) | 54.96 mph (88.45 km/h) |
| 60 mph (96.56 km/h) | 59.96 mph (96.49 km/h) |
| 65 mph (104.61 km/h) | 64.95 mph (104.53 km/h) |
| 70 mph (112.65 km/h) | 69.95 mph (112.57 km/h) |
| 75 mph (120.7 km/h) | 74.95 mph (120.61 km/h) |
| 80 mph (128.75 km/h) | 79.94 mph (128.66 km/h) |
| 85 mph (136.79 km/h) | 84.94 mph (136.7 km/h) |
| 90 mph (144.84 km/h) | 89.94 mph (144.74 km/h) |
| 95 mph (152.89 km/h) | 94.93 mph (152.78 km/h) |
| 100 mph (160.93 km/h) | 99.93 mph (160.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1868 | 2170 | 2337 | 2440 | 2552 | 2631 | 2718 | 2822 | 2965 | 3108 | 3267 | 3394 | 3625 | 3879 | 4078 | 4205 | 4276 | 4539 | 4904 | 5699 |
Better Fuel Economy Factory Ratios Increased Power
