Tyre pressures

1 to 20 of 43 messages
29/09/2012 at 16:11

How hard should your tyres be?  Bought a track pump, pumped them up as much as I can, released nozzle and they`re still a bit squiggy.  Should they be rock solid or with a bit of give if you squeeze between finger and thumb.  It seems that when I release the nozzle, loads of the air i`ve just pumped in, comes out. No better than my small hand pump.

 

cougie    pirate
29/09/2012 at 16:15
Pretty solid.

Did you undo the valve on your inner tube ?
I'd let the air out and try again.
Does the track pump have a gauge on ? I do about 95 psi.
29/09/2012 at 18:10

I do mine up to 115 psi, is that too much? I've been doing it for over a year and not had any problems. Also the first time I pumped mine up it took me ages to figure out that you have to unscrew the little valve bit on the presta valve.

29/09/2012 at 18:34

I run mine at 100to 110 psi.

 

29/09/2012 at 18:40

just posting here so I can get everyones opinions as they come along. 

I changed the tyre back from a turbo training one last night and pumped the tyre up as  best as i could with a hand pump, then got my first puncture 20 minutes out on this mornings ride, I'm convinced the reason was not enough pressure but without a guage I could only guess.

after a roadside repair I came home and bought a track pump with guage, a quick google suggested 95-100 psi so I went for 100. 

found i lost a bit of air when removing the nozzle but with a bit of practice it was only a small loss and left the tyres feeling solid. if anyones got any tips for this i'd be glad to hear them.

29/09/2012 at 18:47

Oh .  So you undo the screwy bit.  How dumb am I!!!

29/09/2012 at 19:00

Just done them to about 105.  Now that i`ve done it properly, i now realise i`ve been riding around at about 65 psi .   Should have a bit more speed on harder tyres tomorrow .

 

29/09/2012 at 19:36
100-110 for me
K9
29/09/2012 at 20:21
110
29/09/2012 at 22:08

Something like 100-105 on the rear, 90-95 on the front.  The rear bears more weight and therefore flattens out more, so you want more pressure in the rear for similar tyre profiles on the road, innit.

About 120-125 / 110-115 on the track, but that's tubs on super smooth tarmac.   Probably more on boards but they haven't let me on at Stratford yet. 

I've read all sorts of things about ''correct'' pressure and I'm not sure there's a correct answer, but generally speaking I think it makes sense to have more in the rear than the front, and also to take into account variables such as tyre size - more pressure in narrower tyres - rider weight, and riding surface.  I'd probably take a few psi out for riding in the wet as well.

29/09/2012 at 22:15
Dreaming Of Magic wrote (see)

Just done them to about 105.  Now that i`ve done it properly, i now realise i`ve been riding around at about 65 psi .   Should have a bit more speed on harder tyres tomorrow .

 

On the upside, it is harder to ride at low psi, so you have been training even harder than you thought!

29/09/2012 at 22:57
Oops. I been going to 120 on my road bike. Note to self, let 10 psi out in the morning.
29/09/2012 at 23:06

I used to stick 120 in front and rear, use more like 110 now or a bit less because that seems to be the consensus, can't say I notice much difference either way.   

Blisters    pirate
29/09/2012 at 23:44

I'm putting about 105/110 in mine, using a track pump.

However I find that the valve doesn't always unstick when I try to put air in. Yes I always unscrew it. Yes, I even give it a little tap to let it off the valve seat. But when I pump up, the pump and line can go to 130 or more before there's a little pop and the true pressure is identified. It seems to drop 10 psi or more in a week.

If my tyre is as low as 90 it changes shape on bumps, and that's how I got a snakebite puncture.

Tommygun2    pirate
29/09/2012 at 23:49

Between 100- 110 for me to, thats the amount I was told by a seasoned bike rider so have pretty much stuck to that.

FoC
30/09/2012 at 08:22
On my Velocity 23mm wide rims I run 90 on the front and 95 on the rear. I was told by the chaps who built the them (Strada Wheels UK) the wider than normal rim meant I could run a lower than normal pressure which aids comfort without impacting the rolling resistance or upping the risk of pinch flats.
30/09/2012 at 08:32
When I upgrade my wheels I plan to go to Strada.
PSC    pirate
30/09/2012 at 08:40

110-115 for me.  Optimal tyre pressure depends on your weight, your tyres, the condition of the roads, the weather... so experiment and see what works best.

IronCat5    pirate
30/09/2012 at 11:15

What PSC says. Normally 110 on the racing wheels (23mm tyres), and 90 on my trainng wheels (25mm).

The Evil Pixie    pirate
30/09/2012 at 11:25

oh I just go to the red line! Couldn't tell you what that is but I was told to go to the red line

I have tiny 650s does that make a difference?

Talking of which why does my bike have 650s? Should I upgrade the wheels to "normal" ones?

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