I like forged wheels myself but trully casted wheels are not bad. I know that a race team in japan uses casted enkeis on there n2 enduro skyline. I think its n2 but u can check the ad is in every mag i own. It has to do with warping under high temps supposedly casted rims won't warp as forged will but I really don't know just what I read. I would call gruppe-s talk to PJ he is a good friend of mine. This is a little off subject but, I hate going to gruppe-s! Last time I went there outside they had their silver R33 GTR, a blue evo8, a black STI, and a blue S4 showed up and there I am with my mazdaspeed lookin like a a girl in a training bra at hooters! I would have rather been there in my 86.