Tires: tire types mixing, worn tires, summer tires

Question
Hello Barry,    I have two all weather tires on the front of my car, and two summer tires on the back. They all have good rubber. Do I have a problem? or Is this a safe driving situation?    Thank You,  Bill

Answer
Bill,

First, the safest thing of all is to have 4 new tires of the same type.  So anything other than that is less safe.

I can't really tell if the positioning of these tires is a problem or not, except to say, that 1)  it is better to have the higher speed rated tires on the rear,  2)  it is better to have the least worn tires on the rear, 3)  It is better to have the summer tires on the rear.

Hope this helps.