Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/70-14 | 30/10-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.5 (698.6) | 30 (762) | 2.5 (63.4) 9.1% |
| Width inches (mm) | 9.65 (245) | 10 (254) | 0.35 (9) 3.7% |
| Circum. inches (mm) | 86.41 (2194.72) | 94.25 (2393.89) | 7.84 (199.18) 9.1% |
| Sidewall Height inches (mm) | 6.75 (171.5) | 8 (203.2) | 1.25 (31.7) 18.5% |
| Revolutions per mile (km) | 733.28 (455.64) | 672.27 (417.73) | -61.01 (-37.91) -8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.82 mph (35.11 km/h) |
| 25 mph (40.23 km/h) | 27.27 mph (43.89 km/h) |
| 30 mph (48.28 km/h) | 32.72 mph (52.66 km/h) |
| 35 mph (56.33 km/h) | 38.18 mph (61.44 km/h) |
| 40 mph (64.37 km/h) | 43.63 mph (70.22 km/h) |
| 45 mph (72.42 km/h) | 49.08 mph (78.99 km/h) |
| 50 mph (80.47 km/h) | 54.54 mph (87.77 km/h) |
| 55 mph (88.51 km/h) | 59.99 mph (96.55 km/h) |
| 60 mph (96.56 km/h) | 65.45 mph (105.32 km/h) |
| 65 mph (104.61 km/h) | 70.9 mph (114.1 km/h) |
| 70 mph (112.65 km/h) | 76.35 mph (122.88 km/h) |
| 75 mph (120.7 km/h) | 81.81 mph (131.66 km/h) |
| 80 mph (128.75 km/h) | 87.26 mph (140.43 km/h) |
| 85 mph (136.79 km/h) | 92.71 mph (149.21 km/h) |
| 90 mph (144.84 km/h) | 98.17 mph (157.99 km/h) |
| 95 mph (152.89 km/h) | 103.62 mph (166.76 km/h) |
| 100 mph (160.93 km/h) | 109.08 mph (175.54 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
