Join Date: Oct 2005
Location: Manhattan / Vancouver
Bikes: a bunch.
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451mm is the ISO wheel size of a BMX wheel.
I have no idea what kind of bike would take 406 wheels... kids bike?
Does the frame have clearance for the larger diameter wheels and tires?
Assuming the wheels would clear the frame and fork, the most inexpensive way to get the brakes working is to cut off the brake bosses, and have a muffler shop re-weld them on.