And just to kill the rumours, having slicks doesn't mean you can't go off-road. It just means you have less grip and therefore need to be a better rider.
In fact I'm tempted to say that knobby tyres are for wussies and amateurs..
..Okay okay, so I merely descended a muddy slope on the side of a bridge, just because it was the best way to get back on the canal path.
Still did better than the 2 modern full sussers that tried to follow me. Those guys had to pick their bikes back up at the bottom.
I haven't heard these rumours! Most of us older riders first took non specific bikes off road, often with the near slick tyres they came supplied with. What is rather ridiculous is the number of super grippy huge tread tyres seen on full sussers that never see an inch of mud!
Just for the sake of the argument though, try going back up that slope on 'slicks', and then try again with some serious knobblys.
The fact is, I feel, that 90% of what people are riding can be more efficiently done on smoother profile tyres. But since when has function interfered with people's desire to have the most gnarly, over the top machines?
One merely need observe the fools riding around on huge mud tyres in their 4x4s all summer when they rarely take them off tarmac, let alone into mud! I personally know a number of these fools!
The doctor diagnosed me with hereditary diarrhoea. I can't understand, I wear a kilt.