road bike tyre s

[n gordon]

follks : i currently use a road bike with 700 x 25 tyres and need a new back tyre .

whats the difference between a 25 and 23 ??

cheers

niall

 

[jowwy]

2mm

 

[MattHB]

Nothing at all other than a harder ride and a higher risk of punctures (for the 23mm)

 

[400bhp]

... a higher risk of punctures (for the 23mm)

how do you work that out?

 

[Edge705]

not a great deal at all at a push one would argue the 25 is more comfortable but Ive ridden both and dont notice any - However some 23's are not as wide as others strange I know but yuo can get a 23 thats as fat as a 25 for example on the back I have a 23 gator skin hardshell on the front I have a 23 pro race - the pro race is not as wide the gatorskin because of its contour and my gatorskin 23 looks the same width as my conti city race 25.

 

[ianrauk]

how do you work that out?

Indeed....

 

[ianrauk]

not a great deal at all at a push one would argue the 25 is more comfortable but Ive ridden both and dont notice any - However some 23's are not as wide as others strange I know but yuo can get a 23 thats as fat as a 25 for example on the back I have a 23 gator skin hardshell on the front I have a 23 pro race - the pro race is not as wide the gatorskin because of its contour and my gatorskin 23 looks the same width as my conti city race 25.

Specialized Armadillo's for instance.

 

[fossyant]

Oh and don't go putting mismatched tyres on a road bike - it's just wrong.

 

[MattHB]

Indeed....

Doesn't a higher pressure increase the risk?

 

[ianrauk]

Doesn't a higher pressure increase the risk?

No, the opposite.

 

[Scilly Suffolk]

follks : i currently use a road bike with 700 x 25 tyres and need a new back tyre .

whats the difference between a 25 and 23 ??

Broadly speaking, the fatter the tyre, the more comfortable it is (bigger cushion); conversely, thinner tyres are faster (less rolling resistance).

You're most unlikely to notice with tyres just 2mm different; but over, say, 10mm you probably would.

 

[biggs682]

i doubt most of us would not notice the differance on same tread pattern and differant widths

 

[andrew_s]

A fatter tyre can be run a little softer without increasing the risk of snakebite punctures.

The softer tyre gets you a little more comfort, and less rolling resistance on rough roads (think coarse chippings), but a little more rolling resistance on smooth roads (fresh rolled tarmac).
A fatter tyre has less rolling resistance at the same pressure than a narrower one, but more aerodynamic drag.

The only speed difference that can get noticeable is the rough road difference.

I generally use 28mm tyres (nominal), which I can run at 85-95psi