Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/75-15 | 30/9.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.52 (673.5) | 29.99 (761.78) | 3.48 (88.28) 13.1% |
| Width inches (mm) | 7.68 (195) | 9.49 (241) | 1.81 (46) 23.6% |
| Circum. inches (mm) | 83.3 (2115.86) | 94.22 (2393.2) | 10.92 (277.34) 13.1% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 7.5 (190.39) | 1.74 (44.14) 30.2% |
| Revolutions per mile (km) | 760.61 (472.62) | 672.46 (417.85) | -88.14 (-54.77) -11.6% |
30/9.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.62 mph (36.41 km/h) |
| 25 mph (40.23 km/h) | 28.28 mph (45.51 km/h) |
| 30 mph (48.28 km/h) | 33.93 mph (54.61 km/h) |
| 35 mph (56.33 km/h) | 39.59 mph (63.71 km/h) |
| 40 mph (64.37 km/h) | 45.24 mph (72.81 km/h) |
| 45 mph (72.42 km/h) | 50.9 mph (81.91 km/h) |
| 50 mph (80.47 km/h) | 56.55 mph (91.01 km/h) |
| 55 mph (88.51 km/h) | 62.21 mph (100.12 km/h) |
| 60 mph (96.56 km/h) | 67.86 mph (109.22 km/h) |
| 65 mph (104.61 km/h) | 73.52 mph (118.32 km/h) |
| 70 mph (112.65 km/h) | 79.18 mph (127.42 km/h) |
| 75 mph (120.7 km/h) | 84.83 mph (136.52 km/h) |
| 80 mph (128.75 km/h) | 90.49 mph (145.62 km/h) |
| 85 mph (136.79 km/h) | 96.14 mph (154.73 km/h) |
| 90 mph (144.84 km/h) | 101.8 mph (163.83 km/h) |
| 95 mph (152.89 km/h) | 107.45 mph (172.93 km/h) |
| 100 mph (160.93 km/h) | 113.11 mph (182.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1711 | 1988 | 2141 | 2236 | 2338 | 2410 | 2490 | 2585 | 2716 | 2847 | 2993 | 3109 | 3321 | 3554 | 3736 | 3852 | 3918 | 4158 | 4493 | 5221 |
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