Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-21 | 295/30-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27 (685.9) | 27.97 (710.4) | 0.96 (24.5) 3.6% |
| Width inches (mm) | 12.01 (305) | 11.61 (295) | -0.39 (-10) -3.3% |
| Circum. inches (mm) | 84.84 (2154.82) | 87.87 (2231.79) | 3.03 (76.97) 3.6% |
| Sidewall Height inches (mm) | 3 (76.25) | 3.48 (88.5) | 0.48 (12.25) 16.1% |
| Revolutions per mile (km) | 746.86 (464.08) | 721.1 (448.07) | -25.76 (-16) -3.4% |
295/30-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.71 mph (33.34 km/h) |
| 25 mph (40.23 km/h) | 25.89 mph (41.67 km/h) |
| 30 mph (48.28 km/h) | 31.07 mph (50 km/h) |
| 35 mph (56.33 km/h) | 36.25 mph (58.34 km/h) |
| 40 mph (64.37 km/h) | 41.43 mph (66.67 km/h) |
| 45 mph (72.42 km/h) | 46.61 mph (75.01 km/h) |
| 50 mph (80.47 km/h) | 51.79 mph (83.34 km/h) |
| 55 mph (88.51 km/h) | 56.96 mph (91.68 km/h) |
| 60 mph (96.56 km/h) | 62.14 mph (100.01 km/h) |
| 65 mph (104.61 km/h) | 67.32 mph (108.34 km/h) |
| 70 mph (112.65 km/h) | 72.5 mph (116.68 km/h) |
| 75 mph (120.7 km/h) | 77.68 mph (125.01 km/h) |
| 80 mph (128.75 km/h) | 82.86 mph (133.35 km/h) |
| 85 mph (136.79 km/h) | 88.04 mph (141.68 km/h) |
| 90 mph (144.84 km/h) | 93.21 mph (150.01 km/h) |
| 95 mph (152.89 km/h) | 98.39 mph (158.35 km/h) |
| 100 mph (160.93 km/h) | 103.57 mph (166.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1835 | 2132 | 2296 | 2397 | 2507 | 2585 | 2671 | 2772 | 2913 | 3053 | 3209 | 3334 | 3561 | 3811 | 4006 | 4131 | 4201 | 4459 | 4818 | 5599 |
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