Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Surface finish on 1970s plus 8 alloy wheels

I was thinking of getting the alloys on my 1977 plus 8 refurbished by powder coating them. Looking at the current state of the wheels though, the surface finish seems to be quite rough. Is this a characteristic of 1970s plus 8 allow wheels - ie the original casting was not particularly smooth? Or should I expect to find corrosion to be found underneath the existing paint? If the original casting was just not to a particularly smooth finish, is there anyway to improve the finish - eg a thick filler coat before applying the top (powder bake) coat?

Here are some pics of the current state of the wheels:








Many thanks