Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 250/70-15 | 30/10-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.78 (731) | 30 (762) | 1.22 (31) 4.2% |
| Width inches (mm) | 9.84 (250) | 10 (254) | 0.16 (4) 1.6% |
| Circum. inches (mm) | 90.41 (2296.5) | 94.25 (2393.89) | 3.83 (97.39) 4.2% |
| Sidewall Height inches (mm) | 6.89 (175) | 7.5 (190.5) | 0.61 (15.5) 8.9% |
| Revolutions per mile (km) | 700.78 (435.44) | 672.27 (417.73) | -28.51 (-17.71) -4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.85 mph (33.55 km/h) |
| 25 mph (40.23 km/h) | 26.06 mph (41.94 km/h) |
| 30 mph (48.28 km/h) | 31.27 mph (50.33 km/h) |
| 35 mph (56.33 km/h) | 36.48 mph (58.72 km/h) |
| 40 mph (64.37 km/h) | 41.7 mph (67.1 km/h) |
| 45 mph (72.42 km/h) | 46.91 mph (75.49 km/h) |
| 50 mph (80.47 km/h) | 52.12 mph (83.88 km/h) |
| 55 mph (88.51 km/h) | 57.33 mph (92.27 km/h) |
| 60 mph (96.56 km/h) | 62.54 mph (100.66 km/h) |
| 65 mph (104.61 km/h) | 67.76 mph (109.04 km/h) |
| 70 mph (112.65 km/h) | 72.97 mph (117.43 km/h) |
| 75 mph (120.7 km/h) | 78.18 mph (125.82 km/h) |
| 80 mph (128.75 km/h) | 83.39 mph (134.21 km/h) |
| 85 mph (136.79 km/h) | 88.6 mph (142.6 km/h) |
| 90 mph (144.84 km/h) | 93.82 mph (150.98 km/h) |
| 95 mph (152.89 km/h) | 99.03 mph (159.37 km/h) |
| 100 mph (160.93 km/h) | 104.24 mph (167.76 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
