Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-15 | 245/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.04 (610.5) | 28.5 (724) | 4.47 (113.5) 18.6% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 75.51 (1917.94) | 89.55 (2274.51) | 14.04 (356.57) 18.6% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 6.75 (171.5) | 2.23 (56.75) 49.5% |
| Revolutions per mile (km) | 839.1 (521.39) | 707.56 (439.65) | -131.54 (-81.74) -15.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.72 mph (38.17 km/h) |
| 25 mph (40.23 km/h) | 29.65 mph (47.71 km/h) |
| 30 mph (48.28 km/h) | 35.58 mph (57.26 km/h) |
| 35 mph (56.33 km/h) | 41.51 mph (66.8 km/h) |
| 40 mph (64.37 km/h) | 47.44 mph (76.34 km/h) |
| 45 mph (72.42 km/h) | 53.37 mph (85.88 km/h) |
| 50 mph (80.47 km/h) | 59.3 mph (95.43 km/h) |
| 55 mph (88.51 km/h) | 65.23 mph (104.97 km/h) |
| 60 mph (96.56 km/h) | 71.15 mph (114.51 km/h) |
| 65 mph (104.61 km/h) | 77.08 mph (124.06 km/h) |
| 70 mph (112.65 km/h) | 83.01 mph (133.6 km/h) |
| 75 mph (120.7 km/h) | 88.94 mph (143.14 km/h) |
| 80 mph (128.75 km/h) | 94.87 mph (152.68 km/h) |
| 85 mph (136.79 km/h) | 100.8 mph (162.23 km/h) |
| 90 mph (144.84 km/h) | 106.73 mph (171.77 km/h) |
| 95 mph (152.89 km/h) | 112.66 mph (181.31 km/h) |
| 100 mph (160.93 km/h) | 118.59 mph (190.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1801 | 2092 | 2253 | 2352 | 2460 | 2536 | 2620 | 2720 | 2858 | 2996 | 3149 | 3272 | 3494 | 3739 | 3931 | 4053 | 4122 | 4375 | 4728 | 5494 |
Better Fuel Economy Factory Ratios Increased Power
