95 with C5 rims & rear end question
 

I just purchased a 1995 with this week with the C5 chrome rims. I changed the brake pads yesterday and noticed all four rims have spacers behind the rims on the lugs. Are the spacers neccessary and because of the C5 rims or were they on with the origional rims? I also noticed while doing rear pads, that the back bearings do not have a grease cap over the nuts and cotter pin. Is this normal or are the caps missing?
Wayne