Tyre seal breaking

[DIYspanner]

Had a valve leaking around the stem base so tried applying a bit silicone (tyre deflated) to try and seal it but no go, still fizzled a bit.

I fitted a new valve and all is well.

To break the seal, if its any use to anyone, car up on the trolley jack and use the car jack on the jacking point with a wood plank on the tyre wall, using the car jack to push on the plank to break the tyre seal - its very effective.

Only hassle is sealing the trye back on the rim. 12v tyre inflators don't push enough air so its a trip to the local filling station a mile along the road.

£1 for a pack of tyre valves. A cracking job done.

I remember my dear Papa and his mates running over a tyre laid on the deck trying to get the seal broken - used to take ages of backwards and forwards.

 

[Burnerman]

You can sometimes get the tyre to seat on the rim by using a rope tourniquet around the periphery of the tyre and turning it really tight. Only if the carcass hasnt been distorted though!
John

 

[DIYspanner]

You can sometimes get the tyre to seat on the rim by using a rope tourniquet around the periphery of the tyre and turning it really tight. Only if the carcass hasnt been distorted though!
John

Thanks John!

One for the knowledge bank.

There's some puncture repair kits on ebay so may get one and do my own repairs and save £10/repair. Tyre/wheel needs to marked so they're back in the right place for balance.

So long as the puncture is 3/4" or more from the shoulder, you can repair.

 

[Burnerman]

I think I could go for the 36mm diameter mushroom patches that the tyre fitters use, together with the vulcanising solution.....the other types, fixed from the outside are recommended strictly just to get you home.
A good point about marking the tyre / rim position to do,away with rebalancing!
John

 

[DIYspanner]

I think I could go for the 36mm diameter mushroom patches that the tyre fitters use, together with the vulcanising solution.
John

Noted John, thanks!

 

[cdbe]

Squirt WD40 in tyre and throw match at it.

I used to have a work bench made from scaffold tubes set in concrete so used to fix another long tube at right angles with a swivel coupling to make a sort of scissor lever to press down and break the seal.

 

[DIYspanner]

Squirt WD40 in tyre and throw match at it.

I saw that done on Ice Road Truckers but with butane.

Lots of improvising on IRT

 

[cdbe]

Yes, it really does work, but on a normal car tyre you had to get your inflator going straight away as the hot gas would cool down really quickly and start to suck the tyre back off the rim if you weren't careful. I used to do it when all the local garages replaced their proper high pressure pumps with little things that would only pump up a flat tyre.

 

[DIYspanner]

Yes, it really does work, but on a normal car tyre you had to get your inflator going straight away as the hot gas would cool down really quickly and start to suck the tyre back off the rim if you weren't careful.

Just an idea, before spraying and igniting, take the valve out of the stem to act as a vent and stop excessive suction from the cooling gas.

 

[fixitflav]

To break the seal, if its any use to anyone, car up on the trolley jack and use the car jack on the jacking point

I lay the wheel down flat and rest a hefty plank with the end on the sidewall. Drive the car up the plank. If the bead doesn't come right off the lip finish it with a boot heel. Works fine.

 

[DIYspanner]

I lay the wheel down flat and rest a hefty plank with the end on the sidewall. Drive the car up the plank.

So the plank acts like a car ramp?

Isn't there a risk of damaging the tyre carcass if the seal breaks and flattens the tyre on the deck?

 

[Peter.N.]

In the olden days before tubeless tyres I used to drive the front wheel up on to and around the tyre - that used to do it.

Peter

 

[fixitflav]

So the plank acts like a car ramp?

That's right

Isn't there a risk of damaging the tyre carcass if the seal breaks and flattens the tyre on the deck?

I don't do it very often, but it never has yet. Tyres are pretty tough! Also if it's done because the tyre is worn out or damaged beyond repair it doesn't matter anyway. But good to see an alternative method, for when there isn't room for the plank route.

 

[DIYspanner]

Well now we have the secret of easy tyre seal breaking, may as well get a portable wheel balance machine, get new tyres delivered and fit them at home.

The likes of Maxiss 195 65 15 are about £50 delivered from suppliers on ebay.

 

[Burnerman]

Good luck with getting the new rubber over the rim.....!
Just a point of interest, Maxxis are good tyres but they make a lot of road noise. Its for this reason I dont use them anymore.
John