why cant i pump my tyre up to max?

[photography27]

trying to pump my 23mm up and they willnot go to the max, my gauge says 120 but the tyres still feel soft and i can tell they aint pumped up when i ride.
i use a stand pump, and i have them slime innertubes.....starting to get on my nerves abit now

maybe best to get new inner's

thanks for any help

mik

 

[fossyant]

Try / borrow a new pump to see if the gauge is faulty?

 

[steve52]

dogey pump at 120 they is up' lol i have some that say 145 max and i belive its possible to get tyers to take 160 but its possible to blow the rims open, rattling like a goodun at 120 and im 15 st

 

[Alembicbassman]

The valve may be stuck, you may be just compressing the air in the pump to get the 120psi

Unscrew the valve locking collar and depress the valve attach the pump, then inflate

 

[slowmotion]

The valve may be stuck, you may be just compressing the air in the pump to get the 120psi

Unscrew the valve locking collar and depress the valve attach the pump, then inflate

Absolutely. That's happened to me on a number of occasions.

 

[photography27]

is the valve locking collar the screw thingy next to the rim?

if i dont unscrew this, how come this will keep my valve from sticking?

i will give it a go in the morning
thank you

 

[Alembicbassman]

The valve has a little knurled ring on threaded brass plunger, you need to unscrew this before inflation.

 

[guitarpete247]

I have a Lidl/Aldi (can't remember which) pump with a head that did both Presta and Schrader. It was somehow blocked and refused to allow any air through but was showing high pressure. When I took the pump off air shot out. I ended up cutting the head off and fitted an adapter like this.

I can then use a standard Schrader pump adapter when I want to pump up MTB tyres. I can also get the 100+psi for the road tyres.

I know I should have taken the pump back but I knew I could make it work easily enough and when the problem occured the bike week was over and the pump out of stock.

 

[gbb]

Slime innertubes ?
I can't remember if they're what i had on a bike years ago, but where there'd been a puncture, the slime did its bit and sealed the innertube...to the degree where i had 'hard spots' in the tube where it was very difficult to get air in equally
might not have been slime tubes...but sounds similar.

 

[looe]

I have a Lidl/Aldi (can't remember which) pump with a head that did both Presta and Schrader.

I know I should have taken the pump back but I knew I could make it work easily enough and when the problem occured the bike week was over and the pump out of stock.

I bought a footpump at Lidl as well and I had the same problem. I chucked it away and bought a Joe Blow Turbo.