If a vehicle is equipped with radial tires on the front you can place non radial tires on the rear?

It's generally not recommended to mix radial and non-radial tires on the same vehicle, even if they are placed on different axles. This can lead to uneven handling and stability issues, especially during cornering or in wet conditions. For optimal performance and safety, it's best to use the same type of tires on all four wheels. If you must mix them, consult the vehicle's manufacturer for specific guidance.