Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-21 | 275/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.74 (780.9) | 28.58 (725.9) | -2.17 (-55) -7% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 96.59 (2453.27) | 89.78 (2280.48) | -6.8 (-172.79) -7% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 3.79 (96.25) | -1.08 (-27.5) -22.2% |
| Revolutions per mile (km) | 656 (407.62) | 705.7 (438.5) | 49.7 (30.88) 7.6% |
275/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.59 mph (29.92 km/h) |
| 25 mph (40.23 km/h) | 23.24 mph (37.4 km/h) |
| 30 mph (48.28 km/h) | 27.89 mph (44.88 km/h) |
| 35 mph (56.33 km/h) | 32.53 mph (52.36 km/h) |
| 40 mph (64.37 km/h) | 37.18 mph (59.84 km/h) |
| 45 mph (72.42 km/h) | 41.83 mph (67.32 km/h) |
| 50 mph (80.47 km/h) | 46.48 mph (74.8 km/h) |
| 55 mph (88.51 km/h) | 51.13 mph (82.28 km/h) |
| 60 mph (96.56 km/h) | 55.77 mph (89.76 km/h) |
| 65 mph (104.61 km/h) | 60.42 mph (97.24 km/h) |
| 70 mph (112.65 km/h) | 65.07 mph (104.72 km/h) |
| 75 mph (120.7 km/h) | 69.72 mph (112.2 km/h) |
| 80 mph (128.75 km/h) | 74.37 mph (119.68 km/h) |
| 85 mph (136.79 km/h) | 79.01 mph (127.16 km/h) |
| 90 mph (144.84 km/h) | 83.66 mph (134.64 km/h) |
| 95 mph (152.89 km/h) | 88.31 mph (142.12 km/h) |
| 100 mph (160.93 km/h) | 92.96 mph (149.6 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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