Tubulars 19mm vs 23 mm ?

Discussion in 'Cycling Equipment' started by toxdoc, Mar 9, 2005.

  1. toxdoc

    toxdoc New Member

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    Just purchased some new tubulars for racing. What are pros and cons of 19 mm vs 23mm ? What about RR vs TT ?
     
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  2. supanort

    supanort New Member

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    23mm would handle better. For example riding on the track if you have to turn up and down the track, or in a crit/RR. For TT I reckon they would be a smoother more comfortable ride.
     
  3. Fat Hack

    Fat Hack New Member

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    In my opinion the 19s would be too dangerous for fast cornering, therefore there's no way I'd use them in a criterium, and I don't see the point of using them in a road race. I'm not sure about time-trials, but I don't know why you'd be going as narrow as a 19mm because most of the Vittoria tubulars are 21mm, with their TT model being 20mm, although most of the Continentals a 19s.


    http://www.vittoria.com/index3.asp?lingua=en

    http://www.conti-online.com/generator/www/de/en/continental/bicycle/themes/tires/race/folder_en.html

    Before people start talking about contact patch and deformation, just be aware that these factors are different for clinchers and tubulars
     
  4. Blasp

    Blasp New Member

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    I tried several 19mm tires and my experiences are: on 19mm tubular I feel faster than on 23mm. I have no problems with stability anywhere. But theese tubulars need to be inflated more to be fast (12-15 bar) and it is not much comfortable to ride it. So I just bought several only for TTs on my new ZIPPs. For training or normal races I think that 23mm or something like that is ideal.

    My experiences are with TUFO JET tubulars. Fast, but hard.
     
  5. ct2

    ct2 New Member

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    23 mms have less rolling resistance than a 21 or a 19, so would be 'faster.' The 23s would also probably be a little more comfortable, due to the lower rolling resistance, as well. Wider tires also corner better due to a larger contact patch.

    The 21 or 19 would provide an aero advantage on the front wheel as compared to a 23 mm. That aero advantage would be outweighed by the higher rolling resistance in a peleton, but the aero would probably outweigh the rolling resistance in a TT. Potentially a gram or so of weight savings (19 mm) as well.

    Of course, we're talking about tenths of a second here - at most. in other words, you wouldn't know the difference.

    I've ridden a 19mm front with a 23 mm rear in all types of races and haven't had any problems. My next front will probably be a 23 since I ride mostly road/stage/crits.
     
  6. domaindomain

    domaindomain New Member

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    The 23mm will feel much better to ride - they have a little more give in them and will be more comfortable.

    The 19mm may feel a little faster but the difference will hardly be perceptible.

    Cheers

    bicyclerubber.com

    All the rubber your bikes need !
     
  7. Fat Hack

    Fat Hack New Member

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    I don't have the data, but I think this is different for tubulars because they deform differently, which is one reason why Vittoria make several tubulars in 21mm
     
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