Not that I'm an expert by any stretch on this, but some primers are not sandable. I remember reading it on the can (was pretty cheap stuff though). Assuming it is 'sandable primer', I would lightly scuff between layers so it adheres better. I barely ever did this, because I was too damn impatient (seems to be a trend ) to let each layer dry completely.
Funny, I just picked up an extra set of rims at the yard and painted them. I didn't even use primer, just cleaned, scuffed and shot with a can of wheel paint from AutoZone. Mounted my 155s on them and sent my origional rims off to be powder coated white to match my car. I will probably get them back in 10 days or so, depending on his back log. No rush, cause I can't find any 145/80r12s to mount on them (tire rack has Yokohama's on back order) and everyone else stopped production (except for snow tires).
The CRX is a nice car. I would strip it so fast if I ever get one.
*custom exaust(lower weight than stock)
*take out spare and passenger seat. Replace driver's seat with lighweight seat.
*aluminum brake drunms
*take out the stereo, power steering, air conditioner.
*get cf hood and paint it stock color
*refuel only 5 gallons at a time
*full LED conversion to gain some more mpg
*tires inflated to max cold psi
*modified dizzy to shut off car while driving
Anyway, I decided I don't want to drive my car fully stripped. No a/c is fine but I like to listen to something to keep my from going crazy and have some interior (putting the front back in so people feel safe driving with me again). The rest sounds great, need to make matt find me some aluminum drums,