What Tyres?

[SPHDS]

Hi, firstly, sorry if this is excessively blond, but I just wanted to be sure......!
Anyway, my sister came back from uni having found a rather tatty mountain bike in a skip for me to do up for her for when she goes back....all seems well and good, apart from the tyres, which were knackered - they were a pair 26x1.75's, which seemed impossible to get off the rims (I know tyres can be a bit difficult, but these snapped a plastic tyre lever and bent a metal one - ended up having to cut them off!) So obviously these are not the right size and were bodged on before the bike was put in the skip!
So I was wondering what the correct tyres would be for this bike (would 700's work, or 27's or 28's.......!)

 

[black'n'yellow]

The tyres will be 26s, so you will need another pair of the same diameter. Just because you could not get them off, does not mean they were not meant to be on there in the first place. Unless someone had skipped a 29er, which would not be unreasonable...

 

[biggs682]

+1 re above comments re 26" tyres , there should be some markings on the rim to show what size they are and from there you should be able to work out what size tyre to fit .

 

[PpPete]

The tyres will be 26s, so you will need another pair of the same diameter. Just because you could not get them off, does not mean they were not meant to be on there in the first place. Unless someone had skipped a 29er, which would not be unreasonable...

Wouldn't have got 26" tyres on a 29er.
Equally if you try a bigger size tyre than the rim is built for, the tyre will just fall off.

Looking at the fount of all knowledge (this page) suggests that there are no sizes close enough to the ISO 559mm (Mountain Bike 26") that could be bodged onto the wrong rim. That said, some combinations of supposedly compatibly sized rims and tyres are a lot harder than others to remove & refit. If this were 700c I could point you at easier combinations, but my knowledge of MTB tyres is woefully inadequate.