Can I put bigger tyre to slim rim?

[cwah]

Hello,

I've noticed my rim has a 2 X 1.75 size, so ideally I should get something like this 1.75 size:
https://www.bike24.de/1.php?content=8;navigation=1;product=65511;backlink=9|2||1000,2,103,106|||||||||

But this size doesn't allow me to get these downhill thick tube:
https://www.bike24.de/1.php?content=8;navigation=1;menu=1000,2,103,106;search=downhill+tube;product=91464

The tube is for 2.5 to 2.7 diameter.

I wonder if I'd have trouble if I get a downhill tube that is thicker than it should? I had lots and lots of flats recently and I'd like to avoid them as much as possible.


Or can I only get a small one like this?
https://www.bike24.de/1.php?product=63804;content=8

Thank you

 

[baldylox]

You'd be better off with a tube to fit the tyre. A tube to fit 1.75 - 2.1 should be OK though, I wouldn't use a thick downhill tube unless you are going to fit fatter tyres. I have fitted 2.25 width tyres to a 26" rim which equally support a 1.75 on my old Saracen MTB without any problems.
As for flat tyre avoidance the reinforced protection of the schwalbe tyre should help but you might want to try adding slime to your tube... I've not had a flat since I added slime and I do a lot of rough off road stuff!

 

[cwah]

Yes it may fit with a slightly bigger tyre, but would that make it stronger or the opposite? because if it's the opposite it may be better to get the exact right 1.75 size?

I'm now considering between these 2 tubes:
Reinforced:
https://www.bike24.de/1.php?content=8;navigation=1;product=57890;page=1;menu=1000,2,103,106;mid=0;pgc=0

Self healing:
https://www.bike24.de/1.php?content=8;navigation=1;menu=1000%2C2%2C103%2C106;search=Michelin+Protek+Max+C4+Inner+Tube;product=22746

 

[anotherkiwi]

I am running 26x1.85 instead of 26x1.75 and I think up to 2 should fit OK.

 

[Twangman]

I replaced my 1.75's with 2" schwalbe big apples. Ideally would have like to gone up to 3" but doubt they would fit on my rims.

 

[cwah]

Yes makes sense, will do that thanks