25 or 28cc tyre?

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Dethagorf
Posts: 9
Joined: Thu Aug 10, 2017 15:04 pm

25 or 28cc tyre?

Postby Dethagorf » Fri May 17, 2019 11:40 am

Hello everyone, we want to buy tyre to our roadbikes do you recommend 25 or 28cc tyre to us?
We are not racing, we ride to enjoy.
Also we think buying the continental gatorskin? Is there anyone use it or should we look for anything else?

keef66
Posts: 12835
Joined: Tue Apr 29, 2008 09:46 am

Re: 25 or 28cc tyre?

Postby keef66 » Fri May 17, 2019 12:00 pm

If your frame will take them, choose the 28 mm tyre every time. Gatorskins have the reputation of being tough, but slippy in the wet.

Depends on what you want / how much you want to spend.

mamil314
Posts: 1092
Joined: Tue Mar 24, 2015 17:48 pm

Re: 25 or 28cc tyre?

Postby mamil314 » Fri May 17, 2019 14:44 pm

Hello, your Highness. Would you kindly use the ******* search function. Thank you
28mm Durano

NitrousOxide
Posts: 3680
Joined: Thu Mar 01, 2007 16:52 pm

Re: 25 or 28cc tyre?

Postby NitrousOxide » Fri May 17, 2019 15:38 pm

Wider for comfort, just be aware that tyre width sizing varies between manufacturers and even brands, for example 28mm Continental 4 Seasons and GP4000S IIs are ~29/31mm wide respectively in the real world.

Supposedly a tyre that meets the rim of the front tyre with less bulge has good aero benefits, so some might use a 25mm (or even 23mm in Conti GP40000S II case) up front and 28mm on the rear.
================
2017 Cube Attain GTC Pro Disc 2016
2016 Voodoo Wazoo

plymouthsteve
Posts: 99
Joined: Thu Sep 06, 2012 21:28 pm

Re: 25 or 28cc tyre?

Postby plymouthsteve » Fri May 17, 2019 23:09 pm

28.
No question

Dethagorf
Posts: 9
Joined: Thu Aug 10, 2017 15:04 pm

Re: 25 or 28cc tyre?

Postby Dethagorf » Sat May 18, 2019 07:45 am

NitrousOxide wrote:Wider for comfort, just be aware that tyre width sizing varies between manufacturers and even brands, for example 28mm Continental 4 Seasons and GP4000S IIs are ~29/31mm wide respectively in the real world.

Supposedly a tyre that meets the rim of the front tyre with less bulge has good aero benefits, so some might use a 25mm (or even 23mm in Conti GP40000S II case) up front and 28mm on the rear.


I wasnt know that until that.
Our bikes are : KTM Strada 2000 (2015) and B'TWIN ULTRA 900 AF
I am not sure that I can use 28" with these bikes. What do you think?

Zest28
Posts: 44
Joined: Sun Jul 22, 2018 15:12 pm

Re: 25 or 28cc tyre?

Postby Zest28 » Wed May 22, 2019 08:43 am

As already mentioned, if you frame takes it, go for the 28mm.

keef66
Posts: 12835
Joined: Tue Apr 29, 2008 09:46 am

Re: 25 or 28cc tyre?

Postby keef66 » Wed May 22, 2019 09:03 am

Dethagorf wrote:
NitrousOxide wrote:Wider for comfort, just be aware that tyre width sizing varies between manufacturers and even brands, for example 28mm Continental 4 Seasons and GP4000S IIs are ~29/31mm wide respectively in the real world.

Supposedly a tyre that meets the rim of the front tyre with less bulge has good aero benefits, so some might use a 25mm (or even 23mm in Conti GP40000S II case) up front and 28mm on the rear.


I wasnt know that until that.
Our bikes are : KTM Strada 2000 (2015) and B'TWIN ULTRA 900 AF
I am not sure that I can use 28" with these bikes. What do you think?


Measure how much extra space you have around the 25mm tyre?

Under brake calipers
Under the fork crown
Inside seatstays
Inside chainstays

Think I'd want to have at least 5mm space round a 25 to comfortably run a 28mm tyre


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