I did a 4 hour ride on my MTB with 2.2 tyres , I did exactly the same ride on a bike with 4.8 tyres and I was only 5 min slower , reason is the fatter tyre was faster in parts the 2.2 couldn't handle and vice Verda. Prob got nothing to do with this thread just thought I would let you know.
Rolling Resistance of tyres.
- Thread starter Banjo
- Start date
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Ajax Bay
Guru
- Location
- East Devon
Ouch squared! Boot?
Ajax Bay
Guru
- Location
- East Devon
I used this bikecalculator.com to see what difference 15w (2 x 7.5w) would make if it was used up to counter the rolling resistance of heavier, less supple tyres, rather than propelling one forward (combating the increased drag from going faster). You can put your own figures in the calculator.
For an 80kg rider on a 12kg bike, riding a flat 25 miles generating on average 135w: the 'slower' tyres would mean taking 6 minutes longer (90 versus 96). This difference would be magnified if there were hills on this ride.
