Just recently got a used 2005 Boxster S with 48K. I've noticed a rattle over rough/uneven pavement when the top is up but it goes away when the top is down. Therefore I assume it is the top. Is this to be expected/common? The last convertible was Mom's '69 Chevelle - in '69! So I really don't have a reference to go by as far as convertibles and noisy tops go. Thanks.
Sam