Should I buy 25c tyres for 95kg weight?

[Mr Haematocrit]

I run 24c for that exact reason

 

[MrWill]

I run 24c for that exact reason

What tyres?

 

[Mr Haematocrit]

Specialized S-Works Turbo 24c
Amazing tyre, seriously fast imho

 

[MrWill]

Bloody hell they cost as much as some car tyres!

 

[MrGrumpy]

marginal gains etc

 

[Mr Haematocrit]

Bloody hell they cost as much as some car tyres!

Tyre amnesty at the moment so £30

http://www.specializedconceptstore.co.uk/the-hub/the-specialized-tyre-amnesty

 

[Smurfy]

I'd take manufacturer stated tyre widths with a pinch of salt. I've just pumped 23, 25, and 28 tyres up to just over 100psi. Measuring six tyres with calipers gives:
23mm = 23.4, 23.4
25mm = 26.4, 26.8
28mm = 26.6, 26.7

 

[mickle]

I've just ridden 25C GP 4000S through the winter months and found them OK, comfort wise especially on broken tarmac and speed wise, apart for when you hit an head wind and then you feel that extra drag. Its because of that reason that they are not that popular in races, when it comes to a sprint and you hit a high speed, the drag factor kicks in as they do not slice through the air as clean as a 23 or less

Beware though that if you have the clearance, note how much, and if its marginal, then you have to think about it could be ride over if you get a slight buckle. On my Madone, its only marginal between the frame, front and back and also height wise too between the forks. I stopped dead one day climbing a steep hill, it was caused by a stone sticking to the outside of the tyre and jamming in the bridge of the fork, but with a 23, theres loads of clearance. Perhaps if I learnt to climb hills faster, centrifugal force would have kicked it off and prevented it happening.

It's just not possible to tell the difference in aerodynamic drag between a 23mm tyre and a 25mm tyre. It's all in your mind.

 

[zacklaws]

It's just not possible to tell the difference in aerodynamic drag between a 23mm tyre and a 25mm tyre. It's all in your mind.

Its not in the mind but in the body, when your in harmony with your bike with many miles on it, you know when something is not right. Its a bit like that slow puncture, you feel the extra drag long long before its flat enough to notice 100% whats wrong, but you suspect whats wrong.

 

[mickle]

Its not in the mind but in the body, when your in harmony with your bike with many miles on it, you know when something is not right. Its a bit like that slow puncture, you feel the extra drag long long before its flat enough to notice 100% whats wrong, but you suspect whats wrong.

Nah. I don't believe it for a minute. The difference in air volume via ride quality maybe, but in the aerodynamic drag between 23 and 25? I call BS.