Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/75-15 | 30/9.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.97 (583.5) | 29.99 (761.78) | 7.02 (178.28) 30.6% |
| Width inches (mm) | 5.31 (135) | 9.49 (241) | 4.17 (106) 78.5% |
| Circum. inches (mm) | 72.17 (1833.12) | 94.22 (2393.2) | 22.05 (560.08) 30.6% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 7.5 (190.39) | 3.51 (89.14) 88% |
| Revolutions per mile (km) | 877.93 (545.52) | 672.46 (417.85) | -205.46 (-127.67) -23.4% |
30/9.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.11 mph (42.02 km/h) |
| 25 mph (40.23 km/h) | 32.64 mph (52.53 km/h) |
| 30 mph (48.28 km/h) | 39.17 mph (63.03 km/h) |
| 35 mph (56.33 km/h) | 45.69 mph (73.54 km/h) |
| 40 mph (64.37 km/h) | 52.22 mph (84.04 km/h) |
| 45 mph (72.42 km/h) | 58.75 mph (94.55 km/h) |
| 50 mph (80.47 km/h) | 65.28 mph (105.05 km/h) |
| 55 mph (88.51 km/h) | 71.8 mph (115.56 km/h) |
| 60 mph (96.56 km/h) | 78.33 mph (126.06 km/h) |
| 65 mph (104.61 km/h) | 84.86 mph (136.57 km/h) |
| 70 mph (112.65 km/h) | 91.39 mph (147.07 km/h) |
| 75 mph (120.7 km/h) | 97.92 mph (157.58 km/h) |
| 80 mph (128.75 km/h) | 104.44 mph (168.08 km/h) |
| 85 mph (136.79 km/h) | 110.97 mph (178.59 km/h) |
| 90 mph (144.84 km/h) | 117.5 mph (189.1 km/h) |
| 95 mph (152.89 km/h) | 124.03 mph (199.6 km/h) |
| 100 mph (160.93 km/h) | 130.55 mph (210.11 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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