D
DrC
Guest
Hi - I would really appreciate some help with tyre sizes as I am
totally confused!
My bike (Trek 1200) currently has 700x28 tyres fitted. They are meant
to be puncture resistant but are, in fact, rubbish and I frequently get
punctures! This is mainly due to the fact they "retain" slivers of
stone in the tread that then gnaw into the inner tube as I ride.
I have seen some tyres that I think will be much better but they are
only available down to 700x30.
Does the 30 rather than the 28 mean that they are 2mm wider than the
originals width ways? 2mm greater diameter? 2mm greater
circumference? Any of these 2mm measurements would seem to be
insignificant, but maybe they need 2mm wider / longer / rounder wheels
and so wont fit at all?
Or maybe the whole 2mm thing is a red herring I just invented?
Any advice greatly recieved.
Thanks,
David
totally confused!
My bike (Trek 1200) currently has 700x28 tyres fitted. They are meant
to be puncture resistant but are, in fact, rubbish and I frequently get
punctures! This is mainly due to the fact they "retain" slivers of
stone in the tread that then gnaw into the inner tube as I ride.
I have seen some tyres that I think will be much better but they are
only available down to 700x30.
Does the 30 rather than the 28 mean that they are 2mm wider than the
originals width ways? 2mm greater diameter? 2mm greater
circumference? Any of these 2mm measurements would seem to be
insignificant, but maybe they need 2mm wider / longer / rounder wheels
and so wont fit at all?
Or maybe the whole 2mm thing is a red herring I just invented?
Any advice greatly recieved.
Thanks,
David