I noticed no real change in performance or ride with the alloy rims, but I am not a fast rider anymore. OTOH, the alloy rat-traps are noticable compared to the very heavy rubber blocks and steel pedals that were on it previously. I am very slowly upgrading the bicycle with careful attention to not changing the period look. While the paint on the frame has held up nicely, the mud guards and chain guard need refinishing as there is rust bleading through the paint, that is my next project I think. I am thinking of using satin black to match the old enamel on the frame as closely as I can. I like old things that look like they have had a long life of tender loving care, I do not care for restorations that look better than new; but that is just me, I do not say people have to do it my way.