Forum home Mountain biking forum MTB general

garmin tyre size

cyclostevecyclosteve Posts: 150
edited August 2014 in MTB general
hi all I just got new bike its got 650 wheels and 2.2 tyres I cant find a size on garmin site for this size can anyone help so I can fit my comp on bike

Posts

  • stubsstubs Posts: 5,001
    edited August 2014
    ...
    Fig rolls: proof that god loves cyclists and that she wants us to do another lap
  • BriggoBriggo Posts: 3,537
    Is this for an edge series Garmin and do you have the cadence sensors?

    If so it'l automatically calculate wheel size.
  • cyclostevecyclosteve Posts: 150
    its the edge 510 I don't use the sensors ive put wheel sizes in manually on road bikes
  • edninoednino Posts: 684
    cyclosteve wrote:
    its the edge 510 I don't use the sensors ive put wheel sizes in manually on road bikes

    What do you need wheel size for? It's using GPS to get your speed if you don't have sensors
  • declan1declan1 Posts: 2,470
    As above if you don't have the sensors there is literally no need for the wheel size.

    Road - Dolan Preffisio
    MTB - On-One Inbred

    I have no idea what's going on here.
  • HortonHorton Posts: 327
    If you're not using any sensors then wheel size simply isn't relevant your computer will use the gps. If you have a wheel sensor though it'll be more accurate than gps for speed which gets hampered by trees, cliffs etc occasionally (unless I really did manage 200mph+ for 5 seconds on one ride)

    If you've put wheel size in manually for road bikes why not put it in for your mtb manually? Put the valve at the bottom of the wheel, mark a line on the floor, roll forwards one complete revolution till the valve is back at the bottom and mark another line then measure the distance in mm between the two lines. To be most accurate you should be sat on it with tyres pumped to your usual psi.
  • cyclostevecyclosteve Posts: 150
    thanks for that folks will let gps do the work
Sign In or Register to comment.