Tires: tire wear--vibration, ford ranger truck, michelin tires

Question
I have a '97 Ford Ranger truck.  I have a vibration that I believe is in the front of my truck at speeds of 65-70mph.  Not below that speed.  I notice my tires are worn--wavy like?--on the inside tread on both front tires.  When I bought the tires I had the front end aligned.  I believe this is my second time with this problem in as many sets of tires. Help?  Suggestions for new tire purchase.  Thanks Rick

Answer
Hello, Rick
I need a little more information form you. What size and kind of tire are you using? Do you have the stock rims on the truck? When you rotate the tires, does the problem go away? I had a 1995 Ranger and put more than 100K miles on it with no problems. I ran stock rims with P225/70R14 inch tires. Stock Firestones then BFGoodrich T/A's. Then Michelin tires when I sold it.