unfortunatly most chrome rims tend to pit/bubble and peel these days, my odyssey hazzard lites are shockingly bad, my primo 7005 balance light rim is only 3 months old and has started to  bubble up even though its never seen water 
 
as for lightness im pretty sure the primo 7005 balance light rim is one of the lighest around at the mo and they weigh about  430 grams