Will your wheel shack if you got two new tires and a front alignment but old tires on the back?

Yes, your wheel may shake if you have new tires on the front and old tires on the back. The difference in tread wear and balance between the new and old tires can lead to uneven handling and vibrations. It's important to ensure all tires are in good condition and balanced for optimal performance and safety. Consider replacing the old tires as well to avoid issues.