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Old 26-01-14, 15:44
Pleiades Pleiades is offline
XT-Moto SuperStar
 
Join Date: Aug 2010
Location: North Norfolk
Posts: 5,320
Pleiades is on a distinguished road
Quote:
Originally Posted by marques View Post
The off road terrain is rocks, rocks and more rocks with the occasional mud bath. But mainly it's a bike that I use to get to and from work. A road bike and a Sunday in the mountains.

So I think (without any good reference) the 2.5 would be more nimble in the rocks. But 3.0 would be a bit more durable.
2.5" is the default choice, and probably the way to go. Better suited to the terrain you ride, it's also stronger and will be better protected by the tyre's side wall.