Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-15 | 300/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.5 (597) | 30.35 (771) | 6.85 (174) 29.1% |
| Width inches (mm) | 7.09 (180) | 11.81 (300) | 4.72 (120) 66.7% |
| Circum. inches (mm) | 73.84 (1875.53) | 95.36 (2422.17) | 21.52 (546.64) 29.1% |
| Sidewall Height inches (mm) | 4.25 (108) | 7.68 (195) | 3.43 (87) 80.6% |
| Revolutions per mile (km) | 858.07 (533.18) | 664.42 (412.85) | -193.65 (-120.33) -22.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.83 mph (41.57 km/h) |
| 25 mph (40.23 km/h) | 32.29 mph (51.96 km/h) |
| 30 mph (48.28 km/h) | 38.74 mph (62.35 km/h) |
| 35 mph (56.33 km/h) | 45.2 mph (72.74 km/h) |
| 40 mph (64.37 km/h) | 51.66 mph (83.14 km/h) |
| 45 mph (72.42 km/h) | 58.12 mph (93.53 km/h) |
| 50 mph (80.47 km/h) | 64.57 mph (103.92 km/h) |
| 55 mph (88.51 km/h) | 71.03 mph (114.31 km/h) |
| 60 mph (96.56 km/h) | 77.49 mph (124.7 km/h) |
| 65 mph (104.61 km/h) | 83.94 mph (135.1 km/h) |
| 70 mph (112.65 km/h) | 90.4 mph (145.49 km/h) |
| 75 mph (120.7 km/h) | 96.86 mph (155.88 km/h) |
| 80 mph (128.75 km/h) | 103.32 mph (166.27 km/h) |
| 85 mph (136.79 km/h) | 109.77 mph (176.66 km/h) |
| 90 mph (144.84 km/h) | 116.23 mph (187.06 km/h) |
| 95 mph (152.89 km/h) | 122.69 mph (197.45 km/h) |
| 100 mph (160.93 km/h) | 129.15 mph (207.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1691 | 1964 | 2115 | 2209 | 2310 | 2382 | 2461 | 2554 | 2684 | 2813 | 2957 | 3072 | 3281 | 3511 | 3691 | 3806 | 3871 | 4108 | 4439 | 5159 |
Better Fuel Economy Factory Ratios Increased Power
