Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/80-15 | 30/10-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.17 (741) | 30 (762) | 0.83 (21) 2.8% |
| Width inches (mm) | 8.86 (225) | 10 (254) | 1.14 (29) 12.9% |
| Circum. inches (mm) | 91.65 (2327.92) | 94.25 (2393.89) | 2.6 (65.97) 2.8% |
| Sidewall Height inches (mm) | 7.09 (180) | 7.5 (190.5) | 0.41 (10.5) 5.8% |
| Revolutions per mile (km) | 691.32 (429.57) | 672.27 (417.73) | -19.05 (-11.84) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.37 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.65 km/h) |
| 35 mph (56.33 km/h) | 35.99 mph (57.92 km/h) |
| 40 mph (64.37 km/h) | 41.13 mph (66.2 km/h) |
| 45 mph (72.42 km/h) | 46.28 mph (74.47 km/h) |
| 50 mph (80.47 km/h) | 51.42 mph (82.75 km/h) |
| 55 mph (88.51 km/h) | 56.56 mph (91.02 km/h) |
| 60 mph (96.56 km/h) | 61.7 mph (99.3 km/h) |
| 65 mph (104.61 km/h) | 66.84 mph (107.57 km/h) |
| 70 mph (112.65 km/h) | 71.98 mph (115.85 km/h) |
| 75 mph (120.7 km/h) | 77.13 mph (124.12 km/h) |
| 80 mph (128.75 km/h) | 82.27 mph (132.4 km/h) |
| 85 mph (136.79 km/h) | 87.41 mph (140.67 km/h) |
| 90 mph (144.84 km/h) | 92.55 mph (148.95 km/h) |
| 95 mph (152.89 km/h) | 97.69 mph (157.22 km/h) |
| 100 mph (160.93 km/h) | 102.83 mph (165.5 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 | 1987 | 2140 | 2235 | 2337 | 2410 | 2490 | 2584 | 2715 | 2846 | 2992 | 3109 | 3320 | 3553 | 3735 | 3851 | 3917 | 4157 | 4492 | 5220 |
Better Fuel Economy Factory Ratios Increased Power
