Normal
heheh generally yes, but im going off memory here, and thats not so reliable since its usually pickled pretty good, but i swear it was on here somewhere. Someone had their tires chunking out real bad at like 4-5k miles, took em back to ford and got them all replaced, and then never had the problem again. then a buncha others chimed in having the same thing. i coulda totally dreamed this up in a drunken stupor, but it seems real anyways!