Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-21 | 245/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (695.9) | 26.75 (679.5) | -0.65 (-16.4) -2.4% |
| Width inches (mm) | 12.8 (325) | 9.65 (245) | -3.15 (-80) -24.6% |
| Circum. inches (mm) | 86.07 (2186.23) | 84.04 (2134.71) | -2.03 (-51.52) -2.4% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 3.38 (85.75) | 0.18 (4.5) 5.5% |
| Revolutions per mile (km) | 736.13 (457.41) | 753.89 (468.45) | 17.77 (11.04) 2.4% |
245/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.53 mph (31.43 km/h) |
| 25 mph (40.23 km/h) | 24.41 mph (39.29 km/h) |
| 30 mph (48.28 km/h) | 29.29 mph (47.14 km/h) |
| 35 mph (56.33 km/h) | 34.18 mph (55 km/h) |
| 40 mph (64.37 km/h) | 39.06 mph (62.86 km/h) |
| 45 mph (72.42 km/h) | 43.94 mph (70.71 km/h) |
| 50 mph (80.47 km/h) | 48.82 mph (78.57 km/h) |
| 55 mph (88.51 km/h) | 53.7 mph (86.43 km/h) |
| 60 mph (96.56 km/h) | 58.59 mph (94.29 km/h) |
| 65 mph (104.61 km/h) | 63.47 mph (102.14 km/h) |
| 70 mph (112.65 km/h) | 68.35 mph (110 km/h) |
| 75 mph (120.7 km/h) | 73.23 mph (117.86 km/h) |
| 80 mph (128.75 km/h) | 78.11 mph (125.71 km/h) |
| 85 mph (136.79 km/h) | 83 mph (133.57 km/h) |
| 90 mph (144.84 km/h) | 87.88 mph (141.43 km/h) |
| 95 mph (152.89 km/h) | 92.76 mph (149.28 km/h) |
| 100 mph (160.93 km/h) | 97.64 mph (157.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1919 | 2229 | 2400 | 2506 | 2621 | 2702 | 2792 | 2898 | 3045 | 3192 | 3355 | 3486 | 3723 | 3984 | 4188 | 4319 | 4392 | 4662 | 5037 | 5854 |
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