I purchased a 2008 Dodge Grand Caravan last year and had my old tires on my car installed on it because the van tires were shot and the car tires were in good shape. Only issue was that while they did fit...the van took a 65 and the middle number on the car tire was 60. The hub caps have not made a peep until now. I just had brand new tires of the correct size and spec installed and the instant I rolled away I noticed it sounds like I have gravel in my tire treads. Is there a way to quiet down these plastic hub caps? These are the ones that bolt on with the wheel.