Replacing mountain tyres with street tyres

[isnibs]

I want to replace my mountain bike tyres (size 26x1.95) with ordinary street ones. What size should I get and do I need to replace the tyres also?

[Count-A-Strong]

You still need 26" ones but the width (1.95") will just be narrower. A bike shop will be able to advise.

[snags]

I wouldn't go too narrow (nothing below 1.5) and obviously go for a tyre with tread, even if minimal, rather than slicks for the wet/winter months...

[jomifl]

Yo do not need tread on a bicycle tyre. Nobody has ever aquaplaned on a bicycle, or even a motorcyle, the tyre has the wrong section. Tread does not give grip, contact area does.

[alavahalf]

If you keep it below 107 mph you should be fine with out tread ... https://www.youtube.com/watch?v=rDUgNTQqmgo

[Toureman]

So why do GP motorcycle riders have treaded tyres on their motor bikes when the track is wet jomifl?

I would ever ride my motorcycle without treaded tyres, in fact it's illegal !

You have never ridden a motorcycle in the wet I presume.