From what I understand, the frameset should need no alterations if you use skinny tires (like the stelvios). But, as you;ve mentioned, you'll need different brakes. The canti studs are too low on the frame/fork to work with the taller 451 rims, so people mount road-style caliper brakes. Unfortunately, this effectively stops you from switching wheels easily since caliper brakes can't reach the 406 wheels.
Thanks for that alpa! I think what you're describing is the same set up as the attached pic.
(confirmations still welcome!
)
I was already planning on changing out my brakes, so going with calipers would be no prob.
Only thing, as mentioned, I've already got 406's on the way.....
And the shops fine-print on refunds/exchanges doesn't look promising. . . . If I had known, I'd have gone 451..kinda jumped the gun..
Still waiting on word back from them if they can get the 451's, if so, I'm going to try for an 'exchange/upgrade'.
Or, possibly put the 406's up for sale, NIB... (anyone interested?....) Pics are:
http://item.rakuten.co.jp/giro/mbw_aclassfolexw/