Arrrgh - tyre keeps exploding!

[earlestownflya]

One bad experience equates to poor quality across the whole range?

shut up legs had a bad experience too..so there's two.."marathon plus tyres which KEPT coming off the rim".tell me another brand which has done this?

 

[earlestownflya]

Two bad experiences equate to poor quality across the whole range?

yes

 

[earlestownflya]

Give it up, it is embarrassing to watch.

if you bought a car..say a renault megane.and it was a pile of crap..you would'nt then go and buy a renault scenic..poor standards run through entire ranges..it's the same throughout industry...you really need to wise up

 

[Paulus]

After exhaustive work by myself, I bought a new tyre, tubes and fitted said tyre and tube and the same thing happened. On closer examination the rim has no lips either side of it for the bead of the tyre to sit under. The rim is a Birmalux and I think it is a tubular rim. How the previous tyre stayed on, even at low pressure confounds me. So I am going to find a local bike shop who can rebuild the wheel with a clincher rim on it.
I have only owned the bike for a few weeks and I thought the front wheel felt a bit strange when riding it.

 

[youngoldbloke]

Maybe not a tubular rim - this might be of interest

 

[Ian H]

This is a sprint rim, or tubular rim.

 

[Paulus]

Yesterday with new tyre and tube fitted, (for the second time), I pumped the tyre up to 70 psi and although the tube didn't explode, the tyre was already off of the rim. I shall try again today with 60 psi, but the tyre would be quite soft and maybe prone to pinch flats at that pressure.

 

[Venod]

Is it time for a new set of tyres

Or maybe a new pressure gauge !

 

[Paulus]

Or maybe a new pressure gauge !

I have two track pumps, and I have tried both.

 

[Tim Hall]

Yesterday with new tyre and tube fitted, (for the second time), I pumped the tyre up to 70 psi and although the tube didn't explode, the tyre was already off of the rim. I shall try again today with 60 psi, but the tyre would be quite soft and maybe prone to pinch flats at that pressure.

So it's because your rims aren't hooked. Photos would help.

 

[Paulus]

I am not very good at this new fangled smart phone stuff just yet. But here is the rim.

 

[youngoldbloke]

Definitely NOT a tubular rim. Did you check out my link above?

 

[ChrisEyles]

I had a pair of wheels like this on my old 1960s ten speed. I could get up to around 70psi but any higher and the tyre would lift out of the rim. A more modern clincher rim will have a hook on the edge to hold the tyre in place rather than the straight up-and-down profile on you rim.

Running a 27" x 1.25" tyre at 60 psi is OK as an easy fix. If you want to run a higher pressure tyre you'll have to swap wheels - I did this to run some 95psi panaracer paselas and was very pleased with the result.

 

[Paulus]

I have put the tyre on and at 60psi it is staying on the rim but is quite soft. I have bought a new rim and after speaking to my lbs they will build me a wheel using the existing 36 hole hub.