Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/60-15 | 33/13.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.35 (771) | 33.1 (840.62) | 2.74 (69.62) 9% |
| Width inches (mm) | 12.8 (325) | 13.5 (343) | 0.71 (18) 5.5% |
| Circum. inches (mm) | 95.36 (2422.17) | 103.97 (2640.89) | 8.61 (218.72) 9% |
| Sidewall Height inches (mm) | 7.68 (195) | 9.05 (229.81) | 1.37 (34.81) 17.9% |
| Revolutions per mile (km) | 664.42 (412.85) | 609.4 (378.66) | -55.03 (-34.19) -8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.81 mph (35.09 km/h) |
| 25 mph (40.23 km/h) | 27.26 mph (43.87 km/h) |
| 30 mph (48.28 km/h) | 32.71 mph (52.64 km/h) |
| 35 mph (56.33 km/h) | 38.16 mph (61.41 km/h) |
| 40 mph (64.37 km/h) | 43.61 mph (70.19 km/h) |
| 45 mph (72.42 km/h) | 49.06 mph (78.96 km/h) |
| 50 mph (80.47 km/h) | 54.51 mph (87.73 km/h) |
| 55 mph (88.51 km/h) | 59.97 mph (96.51 km/h) |
| 60 mph (96.56 km/h) | 65.42 mph (105.28 km/h) |
| 65 mph (104.61 km/h) | 70.87 mph (114.05 km/h) |
| 70 mph (112.65 km/h) | 76.32 mph (122.83 km/h) |
| 75 mph (120.7 km/h) | 81.77 mph (131.6 km/h) |
| 80 mph (128.75 km/h) | 87.22 mph (140.37 km/h) |
| 85 mph (136.79 km/h) | 92.68 mph (149.15 km/h) |
| 90 mph (144.84 km/h) | 98.13 mph (157.92 km/h) |
| 95 mph (152.89 km/h) | 103.58 mph (166.69 km/h) |
| 100 mph (160.93 km/h) | 109.03 mph (175.47 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1551 | 1802 | 1940 | 2026 | 2118 | 2184 | 2257 | 2343 | 2461 | 2580 | 2712 | 2818 | 3009 | 3220 | 3385 | 3491 | 3550 | 3768 | 4072 | 4732 |
Better Fuel Economy Factory Ratios Increased Power
