Tire help..
 

So im driving home from a trip this past weekend out in the country (PA) and on my way home my car starts to violently shake at 30mph and more so at higher speeds i pull over and see no issues or problems of the sort. I decide to drive a lil further and check my mirrors...my left rear is wobbling like crazy so jack the car and take it off. The inside of the ties has 2 indentations and a bubble that goes half the length of the tire. All this is on the inside wall? i didnt hit anything so im thinkin maybe its a defect in the tire? Any help would be great....

Should i purchase a new tire or go to dealer or call Advan? I take the bus everyday to work so its not a huge rush...

Any picture? Before buying new tires, I'd go to either dealer or contact tire manufacturer if you think it wasn't your fault.

Lets continue the discussion in Wheel/tires section thread you created http://www.the370z.com/wheels-tires/...tire-help.html