Tyre width help

[gene hunt]

Looking to run if I can narrower tyres on the Sirrus the rims are Alex 622x18 could I get away with 25 or would I need to stick with 28's.

[sojournermike]

I'm inclined to ask why you would want to run narrower tyres?

Increasingly they seem to offer less comfort and no speed advantage in comparison to equivalent tyres in a bigger width?

It it were me I'd just try it, but others will have more experience of skinny tyres on wide rims than me.

Mike

[Gus]

should be possible. test ride it first, the feeling with skinny tires in a wide rim is very different compared to what you are use too.

[vorsprung]

this chart ...

http://sheldonbrown.com/tire-sizing.html#width

..is a very conservation interpretation of the received (old skool) wisdom on the internal width of a rim and what size tyre suits

in recent years opinions have altered somewhat.  Running narrow tyres with wider rims is considered a good thing.  For example, the Velocity A23 has an internal width of 17.5mm and is considered good to use with 23mm tyres.

[gene hunt]

Thanks all, I will try 25's I think