Originally Posted by
cc700
use your words...
if you mean handling, it will make it turn easier and twitch more, as well as fall over easier at speed. that is if the wheel clears.
Surprisingly it's actually the opposite. Because the contact point of the tire is behind a straight line going down from the headtube, decreasing the rake moves the contact point further back behind that line thereby
increasing the trail. This makes the bike more stable (generally) rather than more twitchy.