[LEAKYSEALS951]

I own A BMC pro machine from the same era.

The geometry is all different from regular bikes. I need to look this up when I have more brainpower, but BMC geometry is different. I bought a 51 frame (or was it a 52?) (which in TT and ST lenths is identical to a 54 frame, however the wheelbase is shorter, which wasn't listed. Also HT lengths are all different on BMC's compared to regular bikes.. Like Look said HT lengths on BMC's are longer.. I think... that' the lay of the land.

I would almost say- if you ride a 54 BMC, buy a 54 regular bike and don't think a minute more on this- but let me think about this tomorrow A.M.

Dont take my word on it right now. Life is too complex, however, finding a right size frame is important.