JJDT Posted March 3, 2017 Share I need to replace the tyres on my roadbike. I have noticed that there are now different sizes 23c and 25c. What I also noticed sometimes is that the 25c is somewhat cheaper than the 23c. Question what is the benefit of a 25 over a 23? Thanks Link to comment Share on other sites More sharing options...
s14phoenix Posted March 3, 2017 Share In short 25c are wider (roughly 25mm wide). Some have different shapes where they are taller than what they are wide and some are wider than tall... They provide less rolling resistance than 23c. Link to comment Share on other sites More sharing options...
Growler1 Posted March 3, 2017 Share Lower pressures...more comfort. More grip Less rolling resistance Better puncture resistance (for me) Link to comment Share on other sites More sharing options...
Geronimo Posted March 3, 2017 Share I have only recently gone the 25 route and the difference is noticed immediatley. Will never go back to 23. Link to comment Share on other sites More sharing options...
Nibali Posted March 3, 2017 Share Fitted my roadie with the Spez Turbo 26c, noticeable difference over my Conti GP2000's 23c. Ride is plusher, feels faster and I actually feel that I can push them harder through turns. Lean in an go, perfect! Will definitely stick with the wider tyres. Also very well priced (R470) Link to comment Share on other sites More sharing options...
T-Bob Posted March 3, 2017 Share Good to get 25c if you've got wider rims as they fill out the profile and you don't have a mushroom effect. Not so beneficial if you're running 14mm internal rims and drop the pressure to 80psi. Just check your current frame can take wider tyres. For example my 2015 Evo couldn't take 25c so I got a nice set of AMC wheels with 23mm internals, strapped some 23mm Pro One Tubeless and the profile was nice n fat. Link to comment Share on other sites More sharing options...
Pure Savage Posted March 3, 2017 Share I need to replace the tyres on my roadbike. I have noticed that there are now different sizes 23c and 25c. What I also noticed sometimes is that the 25c is somewhat cheaper than the 23c. Question what is the benefit of a 25 over a 23? ThanksJust get one with a cotton side wall, game changer. Link to comment Share on other sites More sharing options...
Pure Savage Posted March 3, 2017 Share Fitted my roadie with the Spez Turbo 26c, noticeable difference over my Conti GP2000's 23c. Ride is plusher, feels faster and I actually feel that I can push them harder through turns. Lean in an go, perfect! Will definitely stick with the wider tyres. Also very well priced (R470)They dont last that long though... Link to comment Share on other sites More sharing options...
s14phoenix Posted March 3, 2017 Share Good to get 25c if you've got wider rims as they fallen out the profile and you don't have a mushroom effect. Not so beneficial if you're running 14mm internal rims and drop the pressure to 80psi. Just check your current frame can take wider tyres. For example my 2015 Evo couldn't take 25c so I got a nice set of AMC wheels with 23mm internals, strapped some 23mm Pro One Tubeless and the profile was nice n fat. Funny you mention the Schwalbes in 23c on a wider rim... I fitted the 25c Ones and they are a lot fatter than the Fredestein Fortezza Senso 25c I had before. Not sure I like their profile. Link to comment Share on other sites More sharing options...
eddy Posted March 3, 2017 Share Just get one with a cotton side wall, game changer. Indeed. If comfort is your aim, an open tubular with high thread-count casing is the clincher answer to riding FMB, Clement or Dugast tubbies. Add a bit of width, say 25c or even 28c, a latex tube, a bit less pressure and gum-walls, and life gets even better. Better grip, better acceleration, cooler looking and with literally unbelievable (as in "holy 5h!t, i did no know that tires can make such a difference to how my bike rides") ride comfort. Having said that, I must admit I get more Km/ZAR on a set of Gatorskins???? Link to comment Share on other sites More sharing options...
'Dale Posted March 3, 2017 Share It makes you faster Do it 25c Link to comment Share on other sites More sharing options...
JacBrand Posted March 3, 2017 Share "Having said that, I must admit I get more Km/ZAR on a set of Gatorskins" +1 Same here... Lots on Bike Radar about 23 vs 25 vs 28. If 25C fits your frame, go for it. Link to comment Share on other sites More sharing options...
Nibali Posted March 3, 2017 Share They dont last that long though... Yeah, that is a problem. Idea was to use them for races only, will see how keen I am to take them off after L'Etape. Link to comment Share on other sites More sharing options...
Skubarra Posted March 3, 2017 Share They provide less rolling resistance than 23c. Why would a 25c have less rolling resistance than 23c? Seems a bit counter-intuitive to me? Link to comment Share on other sites More sharing options...
'Dale Posted March 3, 2017 Share Why would a 25c have less rolling resistance than 23c? Seems a bit counter-intuitive to me?Yes It hurts my brain The bigger the contact surfaceThe less the rolling resistance ???? Something about metric pressure ???? Link to comment Share on other sites More sharing options...
s14phoenix Posted March 3, 2017 Share Indeed. If comfort is your aim, an open tubular with high thread-count casing is the clincher answer to riding FMB, Clement or Dugast tubbies. Add a bit of width, say 25c or even 28c, a latex tube, a bit less pressure and gum-walls, and life gets even better. Better grip, better acceleration, cooler looking and with literally unbelievable (as in "holy 5h!t, i did no know that tires can make such a difference to how my bike rides") ride comfort. Having said that, I must admit I get more Km/ZAR on a set of Gatorskins "Having said that, I must admit I get more Km/ZAR on a set of Gatorskins" +1 Same here... Lots on Bike Radar about 23 vs 25 vs 28. If 25C fits your frame, go for it. Gatorskins.... eeeeeeeuuuuuuw!!!! I just cant stand the sight of them no matter how good everyone says they are... besides I had more punctures on the set of gatorskins than all the other tyres I had combined. To me punctures have proven 80% bad luck 20% tyre protection - but that's just me... Why would a 25c have less rolling resistance than 23c? Seems a bit counter-intuitive to me? http://www.bicyclerollingresistance.com/ Just an example - but it has been proven - something about the shape of the fooprint and size and deflection of the tyre creating the combined rolling resistance. the worst part is... they now say 28c is even better - especially if you are heavier than average. (which most of us SA gents are) Link to comment Share on other sites More sharing options...
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