i had all 4 tires of my car changed, i told the dealer that i could hear humming coming from the front of the car they checked and advised that my tires are cupping that i should change my tires, i went to americas tire they agreed that they are cupping so they changed it but upon asking why it happens they said it could be wheel balancing issue or my cars struts need replacing. how can i tell that my struts need replacing and how do i check for them.
My car has 93600 miles.
My car has an automatic transmission.
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