Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-13 | 145/90-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.99 (533.2) | 23.28 (591.2) | 2.28 (58) 10.9% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 65.95 (1675.1) | 73.12 (1857.31) | 7.17 (182.21) 10.9% |
| Sidewall Height inches (mm) | 4 (101.5) | 5.14 (130.5) | 1.14 (29) 28.6% |
| Revolutions per mile (km) | 960.75 (596.98) | 866.49 (538.41) | -94.25 (-58.57) -9.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.18 mph (35.69 km/h) |
| 25 mph (40.23 km/h) | 27.72 mph (44.61 km/h) |
| 30 mph (48.28 km/h) | 33.26 mph (53.53 km/h) |
| 35 mph (56.33 km/h) | 38.81 mph (62.45 km/h) |
| 40 mph (64.37 km/h) | 44.35 mph (71.38 km/h) |
| 45 mph (72.42 km/h) | 49.89 mph (80.3 km/h) |
| 50 mph (80.47 km/h) | 55.44 mph (89.22 km/h) |
| 55 mph (88.51 km/h) | 60.98 mph (98.14 km/h) |
| 60 mph (96.56 km/h) | 66.53 mph (107.06 km/h) |
| 65 mph (104.61 km/h) | 72.07 mph (115.99 km/h) |
| 70 mph (112.65 km/h) | 77.61 mph (124.91 km/h) |
| 75 mph (120.7 km/h) | 83.16 mph (133.83 km/h) |
| 80 mph (128.75 km/h) | 88.7 mph (142.75 km/h) |
| 85 mph (136.79 km/h) | 94.25 mph (151.67 km/h) |
| 90 mph (144.84 km/h) | 99.79 mph (160.6 km/h) |
| 95 mph (152.89 km/h) | 105.33 mph (169.52 km/h) |
| 100 mph (160.93 km/h) | 110.88 mph (178.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2205 | 2562 | 2759 | 2881 | 3012 | 3106 | 3209 | 3331 | 3500 | 3669 | 3857 | 4007 | 4279 | 4579 | 4814 | 4964 | 5048 | 5358 | 5789 | 6728 |
Better Fuel Economy Factory Ratios Increased Power
