Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-21 | 275/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (695.9) | 28.58 (725.9) | 1.18 (30) 4.3% |
| Width inches (mm) | 12.8 (325) | 10.83 (275) | -1.97 (-50) -15.4% |
| Circum. inches (mm) | 86.07 (2186.23) | 89.78 (2280.48) | 3.71 (94.25) 4.3% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 3.79 (96.25) | 0.59 (15) 18.5% |
| Revolutions per mile (km) | 736.13 (457.41) | 705.7 (438.5) | -30.42 (-18.9) -4.1% |
275/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.86 mph (33.57 km/h) |
| 25 mph (40.23 km/h) | 26.08 mph (41.97 km/h) |
| 30 mph (48.28 km/h) | 31.29 mph (50.36 km/h) |
| 35 mph (56.33 km/h) | 36.51 mph (58.76 km/h) |
| 40 mph (64.37 km/h) | 41.72 mph (67.15 km/h) |
| 45 mph (72.42 km/h) | 46.94 mph (75.54 km/h) |
| 50 mph (80.47 km/h) | 52.16 mph (83.94 km/h) |
| 55 mph (88.51 km/h) | 57.37 mph (92.33 km/h) |
| 60 mph (96.56 km/h) | 62.59 mph (100.72 km/h) |
| 65 mph (104.61 km/h) | 67.8 mph (109.12 km/h) |
| 70 mph (112.65 km/h) | 73.02 mph (117.51 km/h) |
| 75 mph (120.7 km/h) | 78.23 mph (125.9 km/h) |
| 80 mph (128.75 km/h) | 83.45 mph (134.3 km/h) |
| 85 mph (136.79 km/h) | 88.66 mph (142.69 km/h) |
| 90 mph (144.84 km/h) | 93.88 mph (151.09 km/h) |
| 95 mph (152.89 km/h) | 99.1 mph (159.48 km/h) |
| 100 mph (160.93 km/h) | 104.31 mph (167.87 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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