Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-21 | 275/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.66 (753.4) | 28.58 (725.9) | -1.08 (-27.5) -3.7% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 93.18 (2366.88) | 89.78 (2280.48) | -3.4 (-86.39) -3.7% |
| Sidewall Height inches (mm) | 4.33 (110) | 3.79 (96.25) | -0.54 (-13.75) -12.5% |
| Revolutions per mile (km) | 679.94 (422.5) | 705.7 (438.5) | 25.76 (16.01) 3.8% |
275/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.27 mph (31.01 km/h) |
| 25 mph (40.23 km/h) | 24.09 mph (38.77 km/h) |
| 30 mph (48.28 km/h) | 28.9 mph (46.52 km/h) |
| 35 mph (56.33 km/h) | 33.72 mph (54.27 km/h) |
| 40 mph (64.37 km/h) | 38.54 mph (62.02 km/h) |
| 45 mph (72.42 km/h) | 43.36 mph (69.78 km/h) |
| 50 mph (80.47 km/h) | 48.17 mph (77.53 km/h) |
| 55 mph (88.51 km/h) | 52.99 mph (85.28 km/h) |
| 60 mph (96.56 km/h) | 57.81 mph (93.04 km/h) |
| 65 mph (104.61 km/h) | 62.63 mph (100.79 km/h) |
| 70 mph (112.65 km/h) | 67.44 mph (108.54 km/h) |
| 75 mph (120.7 km/h) | 72.26 mph (116.3 km/h) |
| 80 mph (128.75 km/h) | 77.08 mph (124.05 km/h) |
| 85 mph (136.79 km/h) | 81.9 mph (131.8 km/h) |
| 90 mph (144.84 km/h) | 86.71 mph (139.55 km/h) |
| 95 mph (152.89 km/h) | 91.53 mph (147.31 km/h) |
| 100 mph (160.93 km/h) | 96.35 mph (155.06 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 |
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