I have a 2007 Mazda3 hatchback which, apparently only when I first drive in the morning (we can't get it to do it now! Dang!), makes a muted grinding or crunching sound when turning right. Only happens when turning right, sound comes from wheelwell. Mechanic doesn't find anything wrong at first look, won't investigate further till he hears the intermittant elusive noise. This car has had new struts at one point, could that be it? It sounds like something is rubbing or being devoured, but then ... vanishes?.