25mm tyres

and smelly

Imagine walking across a room of broken glass barefoot vs tiptoe. If you're lucky, barefoot you might not get any splinters. If you're unlucky, tiptoes, and you hit a piece of glass you can guarantee you'll get a splinter! Same deal, the higher pressure your tyre runs, the greater your chance of puncture.

At a mates wedding a while ago, I was about 20 beers deep by the end of the meal... the dancefloor was in full swing and I was barefoot with my suit trousers rolled up to my knees and my tie around my head ninja style. My mate Koli came up and told that there was lots of broken glass on the dancefloor to which I replied "thats how I roll".

At 29 years of age, I needed to call my mum and spent the next day sitting on her porch as she used tweezers and needles to remove the fragments from my feet. Genius.

haha

28 Marathon+ FTW.

and smelly

Speak for yourself stinky!

What????

Sharp object meets soft object.

Try to push the sharp object into soft object.

Push too little and said sharp object won't go into soft object.

Push harder and at some point the sharp object will go into soft object.

For bike tyres, the amount of "push" is tyre pressure ("pounds per square inch"). Run higher pressures and the amount of push goes up, and the likelihood of something sharp going into your tyre increases. Run wider tyres and you can/should use lower pressures. (Without risk of snakebite punctures). So your puncture resistance goes up.

like a woman walking over a shag-piled carpet in heels makes more impression than an elephant (bare foot)

I would say that unless you ride over said sharp object with the exact centre of your 20mm 125 PSI tyre. It'll be pushed away. Whereas a softer wider tyre deforms around the sharp object allowing it time to penetrate.

Fat as possible off-road though.

like a woman walking over a shag-piled carpet in heels makes more impression than an elephant (bare foot)

Shite, I take it back. This ^^ is just too good an argument.

Not strictly true. Even a brick has aerodynamic properties and you can improve these properties in small and meaningful ways.

Yes, but I did say for a real benefit (i.e. not small). I was wrong however and it turns out it is 3 to 1 rather than 4 to 1 to minimise drag but I knew what I mean't :-)

That'll explain those nigh on 50mm deep hipster rims. The hipster is all about drag minimisation.

Running higher pressure should deflect objects. I'v occasionally run over stones and hard the shoot out from under the tyre instead of embedding into the rubber (hit a Taxi once, win)
I run about 140 psi in both tyres and rarely have problems.

"like a woman walking over a shag-piled carpet in heels makes more impression than an elephant (bare foot)"

But this just proves I'm right. Soft tyres, like the carpet will be penetrated easily. Replace the carpet with concrete and neither the elephant or stiletto heel makes a dent.

As if most fixie skidders need to worry about aerodynamics as they ponce around London! *

*with the exception of LaLeLiLoLu of course.

1.25" baby.

1.25" baby.

So thats your secret!

Now I know... maybe I to can one day hope to hit a 25mph average speed on my way to work :p

The hipster is all about drag minimisation.

Hense the deep drop stems used with risers ;)

So thats your secret!

Now I know... maybe I to can one day hope to hit a 25mph average speed on my way to work :p

Fucking lol :P

Running higher pressure should deflect objects. I'v occasionally run over stones and hard the shoot out from under the tyre instead of embedding into the rubber (hit a Taxi once, win)
I run about 140 psi in both tyres and rarely have problems.

"like a woman walking over a shag-piled carpet in heels makes more impression than an elephant (bare foot)"

But this just proves I'm right. Soft tyres, like the carpet will be penetrated easily. Replace the carpet with concrete and neither the elephant or stiletto heel makes a dent.

No, this is categorically not the case!

First off, small stones aren't your issue, it's sharp bits of crap, like glass, flint shards, thorns, nails...

The thing that puctures is your casing - the air simply holds the casing in place. Fill your casing with concrete and then run over glass and see how badly the casing punctures. It's all to do with pressure - can you puncture an uninflated tyre with no weight on it? No! Can you puncture the casing filled to infinite pressure (e.g. like our concrete) with a large amount of weight on it. Yes, everytime!

Ok, I'm bored of this now. Whatever works for ya, I'll stick to my method and stay relatively puncture free :)

I feel I've got to wade in with a non-fact based point.

Everyone says pump your tyres up to the max to avoid punctures... so I do. I very rarely get punctures now.

Also puncture proof tyres help.

Ok, I'm bored of this now. Whatever works for ya, I'll stick to my method and stay relatively puncture free :)

Dude, by all means! But graduate off your 23mm at 140psi and try 25mm tyres at 90psi for a week and I'll eat my hat if you don't go wow, that was a revalation ;-)

I cant think of anything worse than running my tyres at 80psi.

I cant think of anything worse than running my tyres at 80psi.

Losing an arm?

apart from that.

@ Courant, Errrr . . . no thanks. My set up is perfect for how I ride. But thanks anyway :)

@ Balki, me too!

@ Ant, good point!

also lets be honnest running 25mm tyres at 90psi isn't very cool...

... 19mm tubs at 150psi ftw!

apart from that.

Loosing two arms?