Just wondering switching from clincher to tubular tire should I be running the same tire pressure or should it increase ?
Depends on if you are after comfort or (supposed) decreased rolling resistance.
Just wondering switching from clincher to tubular tire should I be running the same tire pressure or should it increase ?
As with many things in life…just because you can it doesn’t mean you should 
search on things like pressure, Crr, rolling resistance, etc…
edit: BTW, what pressures you should run in a particular tire (for given loading and conditions) is more a function of the tire construction (i.e. casing and tread properties) than how it’s attached to a rim.
depends on many, many things:
your bodyweight
your tire width(s)
the road surface
the list goes on …
depends on many, many things:
your bodyweight
your tire width(s)
the road surface
the list goes on …
I guess what he is asking is “should I change pressure when I move to clinchers?” as opposed to “what tire pressure should I have”
Same body weight
Same tire width
Same road surface
Same ‘what ever’
But clincher instead of tubular
So let’s play that 110 psi is the perfect pressure for him today with tubulars. When he switches to clinchers (same brand/model version) what would the optimal pressure be?
Bjorn
depends on many, many things:
your bodyweight
your tire width(s)
the road surface
the list goes on …
I guess what he is asking is “should I change pressure when I move to clinchers?” as opposed to “what tire pressure should I have”
Same body weight
Same tire width
Same road surface
Same ‘what ever’
But clincher instead of tubular
So let’s play that 110 psi is the perfect pressure for him today with tubulars. When he switches to clinchers (same brand/model version) what would the optimal pressure be?
Bjorn
If it’s an “apples to apples” switch…i.e. similar casing materials and tread…110psi.
How the tire is attached to the rim has no bearing on the “proper” pressure.
well, the brand of clinchers matters. very few clinchers are made with the identical materials to equivalent tubulars. for a start, he could refer to manufacturer’s suggestions. this one will work if he’s using michelin clinchers:
http://www.michelinbicycletire.com/michelinbicycle/img/pressurechart121405B.jpg
How the tire is attached to the rim has no bearing on the “proper” pressure.
I’m not entirely sure that’s true. I all the testing that I’ve seen (and in my own), tubulars seem to be less affected as a whole by lower pressures, and I could see how the rim/tire interface could be part of the cause.
For tires of ‘nearly identical construction’ (for instance the Bonty RXL Pros), I DO run different pressure tubular vs. clincher–about 10 psi less in the tubular–better grip and comfort, and most likely better Crr on really rough roads, but less chance of pinch flatting and less deterioration of ‘good road’ Crr.
I believe Zipp has different pressure recommendations for their clinchers vs. their tubulars, too. That seems pretty close to “apples to apples,” but I could be wrong.