Ola

Please my Subaru shaken when driven on highway. it was inspected by the dealer they couldn't found nothing. What they told me is that I should replace / change the front rotors and brake pads. I changed it, but still doing the same, whenever the odometer reach 35mph or 40 above when 'am driven. So I don't know what to do. Please anyone who have similar problem about this vehicle before. Please do not hesitate to give advise or opinion what to do. Thank you.