Quote:
Originally Posted by
RickM
Will await your views with interest jinxit! I didn't want to fit a 140/80 due to the higher gearing effect and reduced clearance between tyre and swinging arm.
Incidentally, a prominant supplier assured me that the 140/80 made no difference to tyre diameter because the "80" was an absolute measurement (80mm) and not a percentage of tyre width!!
My new supplier is Mick at tyre-finder.co.uk.
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Mmn. I went for the 140 as a) it was in stock and b) the mitas is quite a flat tyre and squashing it onto a narower rim should give it a bit more roundness. My theroy any way.
It is a bit naughty telling you that the profile is not related to the tyre width though. My calculations give a 8mm difference wich is only the tred depth so not concerned there. I run a 14 tooth front sprocket anyway so shouldn't be a problem. It will be interesting to see if the speedo changes any. I have a speedo healer so it will be obvious.