Schwalbe land cruisers won't stay on rims

[Panter]

As title really!
I bought a pair to replace the original Kenda's after a couple of punctures.
Fitted the rear, inflated it, and it bulged off the rim. Tried a couple more times, same problem, then at lower pressure and all seemed fine.
Rode it to work and back yesterday, no problem, then on the way in this morning it bulged off the rim again.

I didn't have time to investigate, I had to limp home and grab the car so my question is...

Anyone else had any issues with the above match? I don't know if I have a defective tyre, or they're just not suitable for my rims.
By the time I get home this evening, and try the other tyre, if it's still no good then I won't get time to nip down to Halfords and pick up a different pair so will be in the car again tomorrow.
I could go out at lunchtime and buy some tyres, but I don't want to do that if it's just a defective tyre and the other one will be fine.

Any ideas?

Bike is a 2012 Giant TCX 3 (I think, it's the budget one) running Giant CR1 rims (from Googling)
Tyres are Schwalbe land cruisers 700 X 35

Cheers,
Chris

 

[Racing roadkill]

When you've got the tyres on the rim, and the tube only just inflated, gently push the valve upwards, that will ensure that the tube is right up inside the tyre, at the valved point. Then fully inflate the tube. I've found that most of the bulges I've found after fitting a new tube, are caused by this.

 

[Panter]

When you've got the tyres on the rim, and the tube only just inflated, gently push the valve upwards, that will ensure that the tube is right up inside the tyre, at the valved point. Then fully inflate the tube. I've found that most of the bulges I've found after fitting a new tube, are caused by this.

Thanks for that, would that also apply if it was the same inner tube and a differnt tyre though? I've refitted the original tyre twice on that tube now (Kenda small block 8) with no issues

 

[Racing roadkill]

Thanks for that, would that also apply if it was the same inner tube and a differnt tyre though? I've refitted the original tyre twice on that tube now (Kenda small block 8) with no issues

Yes, Schwalbe tyres are notorious for this, because of the protection they have, the tyre isn't as compliant when new, so giving the tube a bit of encouragement to seat up in the tyre all the way round is more necessary. It's always a good idea just to be sure, no matter which tyres are used.

 

[Panter]

Yes, Schwalbe tyres are notorious for this, because of the protection they have, the tyre isn't as compliant when new, so giving the tube a bit of encouragement to seat up in the tyre all the way round is more necessary. It's always a good idea just to be sure, no matter which tyres are used.

Thanks for that, I will give that a try.

 

[mjr]

Is it bulging off near the valve hole? If so, @Racing roadkill is probably good. If it's a threaded valve with a nut (like on Continentals), then don't tighten the nut all the way down before inflation - do it just enough to stop the tube retreating too far when the pump is attached.

 

[Panter]

Is it bulging off near the valve hole? If so, @Racing roadkill is probably good. If it's a threaded valve with a nut (like on Continentals), then don't tighten the nut all the way down before inflation - do it just enough to stop the tube retreating too far when the pump is attached.

No, it's not near the valve. I must admit I didn't check to see if it was bulging in the same place each time, I'll try it again this evening and will take it up to it's maximum pressure of 65 psi to test it as it let go at under 60 before.

I can't remember if it does have a threaded stem and locknut, but I don't use the locknut anyway.

 

[mjr]

I've had a couple of tyres that I've felt the need to "bed in" by riding along 500m of smooth tarmac at 40psi, warming the rim by gently applying the brake a few times, before inflating them fully.

I've also had one rim that had gone out of true and warped the tyre with it, that I only noticed when a new tyre refused to stay on it! You can check that by watching the rim carefully as it passes the brake blocks or a point on the forks/stays, maybe with a crayon rubber-banded to them. It should stay a consistent distance from the tip.

 

[Panter]

Well, no luck at all with this.
Tried re-seating the tyre and tube, same result.
Swapped it for the other tyre, and again, same thing.
Refitted the old tyre, pumped up to full pressure, absolutely fine.

It looks as if the tyre/rims aren't compatible, I think I'll just get a pair of M+

 

[Racing roadkill]

Well, no luck at all with this.
Tried re-seating the tyre and tube, same result.
Swapped it for the other tyre, and again, same thing.
Refitted the old tyre, pumped up to full pressure, absolutely fine.

It looks as if the tyre/rims aren't compatible, I think I'll just get a pair of M+

Fair enough, is the rim still completely round? Sometimes a slightly ovaled rim can cause issues with a perfectly round new tyre.

 

[Panter]

Fair enough, is the rim still completely round? Sometimes a slightly ovaled rim can cause issues with a perfectly round new tyre.

Yes, seems to be to my eyes, I don't really understand it!
The Landcruisers are a very loose fit, but then the original Kenda's are fairly loose too.
No problems at all on the original tyre on the way in this morning, I've ordered the M+ for the rear now, I can't imagine those being a loose fit on anything!!