622x14 Best Tyre Size

[MY95]

Hi guys

Running the standard PR2's with the original Giant PR3 tyres (23mm), what size tyre would be the fastest with the 14mm inner width?

Looking at a few second hand pairs of GP4000's on eBay at the moment. Would upgrade to Shimano RS010s but think there is only 1-200g in it.

I understand that there is a ratio involved with how low and high in mm you can go for tyres on certain sized rims, but cant quite get my head around it all to work out which size would be the fastest.

Cheers!

 

[vickster]

I'd buy a new tyre in a 23 or 25 myself

What's wrong with the current tyres? Frequent punctures?

 

[Yellow Saddle]

You are overthinking things. Ride, drink beer, get on with life.

 

[MY95]

Current tyres will need replaced soon, so wondered whether 25mm is quicker or slower than 23mm with the narrow 14mm rim width.

 

[TheDoctor]

I find fatter is normally a bit faster.
Not so much for aerodynamic or rolling resistance reasons, but because the fatter tyre is more comfortable and doesn't vibrate me so much I can't see!
Get 25mm and go for a ride. To the pub

 

[MY95]

Thanks all

Have found Conti GP's for £19 in 23mm and £21 in 25mm, worth buying 23/23, 25/25, or 23 front and 25 rear?

Cheers.

 

[Shaun]

25mm for both. Job done. The difference between 23mm vs 25mm won't be all that noticeable for general riding and you'll get slightly lower rolling resistance for the 25mm at similar pressure / bit more comfort.

 

[Yellow Saddle]

25mm for both. Job done. The difference between 23mm vs 25mm won't be all that noticeable for general riding and you'll get slightly lower rolling resistance for the 25mm at similar pressure / bit more comfort.

No, you'll get better rollling resistance on the 25s, all else being equal.

Rolling resistance goes down as tyre width increases, as long as pressure remains the same or goes up.