I bought used tires from a friend...

[gtboost]

A vibration under braking only is not a tire or wheel issue.

 

[motorhoney]

well, the good news is that the leaky tire was due to a loose valve stem, fixed for free.

I have all new brakes and everything rode FINE with my Eagle GTs on. I switched to the Eagle F1s (cupped, worn all over the place and not consistent) and I began to get the vigrations and noise.

I basically just bought these to burn through for the summer.

 

[Jahan]

I had the F1 A/S on my car when I bought it, and within 7000 miles they were ridiculously noisy. According to a freind who is an engineer for GY, these tires are well known to have a noise problem. I got them replaced for free (it pays to have friends) with the Eagle GT's, and after 12000 miles, the GT's are WAY better. If I was paying, I would have gotten Michelins or Contis, but for free I'm happy with the GT's. You have two choices . . . get rid of the tires, or live with the noise.

 

[Jahan]

unreal. My friend insists that they "turn into winter tires" when mounted backwards, and claims great results...

I don't know about mounting them backwards, but I will agree that the F1 A/S were awesome in the winter. Much better than my eagle GT's.

 

[EuroBoost]

maybe the road force test wasnt in spec when you had them mounted.