front hubs and bearings for 09 smart cabrio

getting grease on front wheels along with normal brake dust. so would like source for bearings and maybe rotors and pads too. I think rotors (disks) and pads are easy to find but I can't find source for bearings and I think inner bearings are part of hubs. I've got 30k miles on buggy so hate to take a chance. Also they recommend new bolts everytime you remove calipers (any thoughts on this?)

Thanks, Larry