Tire to Fork clearance safety margin?
I've been considering springing for a set of wider wheels -- currently I run some old Mavic Ksyrium Elite wheels (ca. 2004) which probably are no wider than ~19mm on the outside rim, but not sure. Mounted on these are 25mm Pro4 SCs V2.
As it stands, back wheel isn't an issue. Front wheel I have about 3mm clearance either side of the tire. With a wider wheel I've read that the tire will tend to inflate wider than it does on a narrower wheel. Without buying a wheel and later finding out it doesn't work, what's your guess? Nominally the tire/wheel should still fit fine, but how much allowance is there to be safe for wheel or fork flexing?
FYI, wheels I'm looking at include the Boyd Altamont and the November Alloy Nimbus Ti's with the Pacenti SL23 v2 wheels.