How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dr. Hamman Your Own Question
Dr. Hamman
Dr. Hamman, Automotive Engineer
Category: Car
Satisfied Customers: 6286
Experience:  30 years experience, Repairing, building, & designing, automobiles.
Type Your Car Question Here...
Dr. Hamman is online now
A new question is answered every 9 seconds

2008 GMC: Car starts shaking when

Customer Question

2008 GMC Acadia - Car starts shaking when approaching 60mph.
Stays on course, no pulling. Recent tire repair, two nails.
Could the repair people be the cause , unbalanced tires ?
I follow my service and tire rotations schedule faithfully w/GMC.
Submitted: 6 years ago.
Category: Car
Expert:  Dr. Hamman replied 6 years ago.
Chat Conversation Started
Dr. Hamman :

If the damage from the nails caused structural problems with the tire the belts can separate, and the tire can be delamination, which can end in a blowout. The best way to check for this is to jack the vehicle up and spin the tire by hand. Hold your hand on the tread and feel for lumps in the tread, or other unevenness. If the tire seems perfectly round with no deformations then it will be fine and shouldn't have any structural issues. I would also suggest getting the balance of the tires checked, a wheel weight could have come off. You especially need to check the tire that was repaired. Patches although light could alter the balance, as well as the position the tire was remounted in.