700 x 23 to 25

Oceanblue
Oceanblue Posts: 158
edited October 2011 in Road beginners
How much difference (slower/faster etc) does changing your tyres from 700 x 23 to 700 x 25 make? Ie does it make so much difference that its worth reprogramming my computer? By my own admission I'm a tad anal when it comes to being accurate with speed & distance...

Comments

  • thescouselander
    thescouselander Posts: 549
    Yes, its probably worth changing your computer. I usually set mine over a distance - 1 mile if you know of a road with 1 mile markers. I've always found the charts you get aren't that good.
  • ddraver
    ddraver Posts: 26,708
    If you re anal then it's worth it - but tbh, the difference is pretty minimal even between 26in and 700c tyres
    We're in danger of confusing passion with incompetence
    - @ddraver
  • thescouselander
    thescouselander Posts: 549
    To be specific the difference in circumference between the two tyres will be in the region of 0.5%
  • unixnerd
    unixnerd Posts: 2,864
    23s are slightly more aero and lighter but 25s are a tiny bit comfier and actually have lower rolling resistance. I'd not bother changing the computer.
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  • Oceanblue
    Oceanblue Posts: 158
    Thanks I'll think I'll leave it!!
  • andrewjoseph
    andrewjoseph Posts: 2,165
    Just remember, that as the tyre wears, make adjustments to your computer to take this into account.

    :twisted:
    --
    Burls Ti Tourer for Tarmac, Saracen aluminium full suss for trails
  • AndyOgy
    AndyOgy Posts: 579
    Oceanblue wrote:
    Thanks I'll think I'll leave it!!

    I see what you mean about being 'anal'

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