How much pressure?

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User6179

Guest
Er - no they're not. No need to google it.




You can google 'routinely'. You can also google 'lower' - or you could ask 'eddie', as he originally quoted the word, not me.

Anyway, it's great to see that we all seem to have come to terms with the ground-breaking revelation that 'harder' tyres do not necessarily translate into 'faster' tyres. You can thank me later.


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hatler

Legendary Member
Again, that's completely flawed, unfathomable logic.
How so ? It's logic that works for me.

I pump them up to 120.
The ride is a bit harsher and freer rolling.
The tyres go down a tiny amount each day.
When they get noticeably soft I deploy the pump again.

I've saved time (by not continually checking the tyre pressures and topping up with a couple of strokes of the pump on a twice or thrice weekly basis, and I haven't gone so low as to get a pinch puncture.
 

S-Express

Guest
How so ? It's logic that works for me.

If you read the rest of the thread, your question is answered.

I pump them up to 120.
The ride is a bit harsher and freer rolling.
The tyres go down a tiny amount each day.
When they get noticeably soft I deploy the pump again.

I've saved time (by not continually checking the tyre pressures and topping up with a couple of strokes of the pump on a twice or thrice weekly basis, and I haven't gone so low as to get a pinch puncture.

If your only criteria is saving time not checking your pressures (you must be very busy), then just carry on doing that.
 

hatler

Legendary Member
And a perfectly hard tyre (solid rubber) is definitely slower. In Bicycling Science there is a graph (or equation) that shows how rolling resistance increases when tyres get to stupidly high pressures. (And no, I can't remember what 'stupidly high' equates to.)
 

hatler

Legendary Member
If you read the rest of the thread, your question is answered.



If your only criteria is saving time not checking your pressures (you must be very busy), then just carry on doing that.
It's not my fault if you can't fathom out my logic.
 

hatler

Legendary Member
If you read the rest of the thread, your question is answered.



If your only criteria is saving time not checking your pressures (you must be very busy), then just carry on doing that.
It's more CBA than 'busy'. And I will, thank you.
 

raleighnut

Legendary Member
The thing is mate - I'm not here to be your friend - or anyone elses. Ironically, your responses to me have been far more discourteous than any reply I have posted on this thread, including your initial post, which was nothing more than an ad hominem which added nothing. People asked for clarification of my earlier comments and that is exactly what I am providing. Do me a favour - go out for a ride tomorrow around the lanes of 'leafy Berkshire' (I know it well) with your tyres inflated to 150psi - hopefully your dentures will fall out.
If I don't pump the rear tyre on my Raleigh Road Ace (531c frame) up to 155-160psi I'll get 'pinch flats' mind you the tyres are Continental Grand Prix Supersonic 20x700c and are possibly the 'fastest' tyre available (they have the puncture resistance of a soggy fag paper though)
 

Dogtrousers

Kilometre nibbler
I use 6 and a bit bars usually. I try to get as close to 2 pi bars as possible, because this will ensure all the air fits in properly round the circumference of the wheel and will make the wheels rounder and thus make me go faster.
 

Dogtrousers

Kilometre nibbler
@hatler your approach to pumping up tyres is like my approach to haircuts. Get a good value severe cutting, No 2 clippers, and it will last a fair few months.
 

hatler

Legendary Member
That's not posturing. It's an explanation of how I manage my tyre pressures. I added the nugget to this thread to show that there are more ways to handle the apparently (and surprisingly) contentious topic of what pressure to run your tyres at. I don't have a lot else to add, other than a constant wonderment at how people can be so confrontational.

I'm outta here.
 
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