if your vehicle is lower than 1.25, always good idea to have one.

 

It's great to know you paid enough attention to your tires not to realize that the thread was all gone... poor accord

 

if your front is squealing while cornering at relatively low speeds.. it could be two factors.. 1) your tires are old as heck and hard as a rock now.. 2) you probably have too much toe-in which makes the car plow and squeal even at low cornering speeds..

the vibrations you feel at 60 is most likely a tire out of balance..

edit: nevermind.. i just saw that you took care of it a while ago and for some reason this thread was brought back up.. bleh.. :thinking: