Running a fat knobby tyre in the back and slicker type tyre in the front?
Because I am running this on my Giant that I use for paths and thrashing round on rough trails and stuff and I am wondering if this could be dangerous or put any unneeded pressure on my bike or whatever?
Most people do it the other way around, get all the steering and control from the knobby. let the slicker tire just do the pushing.
More of your weight would be biased over the rear tire when you sit and pedal...the rear slick would make it pedal easier. Only advantage going with the knobby in the back and slick in front would be if you just climb all the time and need the bike...then there'd be no reason for a slick up front.