irk miller said:Bigger tires up front will tend to slog in the turns and they add extra weight. You can do it just fine, but it's a trade off. I ran pretty fat dual sport tires front and back on mine, but it was a purpose built bike not meant to be nimble in the twisties.
nairb87 said:is there a difference in size from a 110/90-18 front and a 110/90-18 rear?
advCo said:Depends on the tire, but probably just the tread pattern. A lot of times there's a central channel on a front tire to aid with water removal
advCo said:Personally I wouldn't go more than 1 size above/below what the manufacturer recommends