Focer font of knowledge Cycling

[Gnasher]

I really only mentioned puncture through lack of thinking of anything else that may separate a very cheap tyre compared to a more expensive one.
I also have an 80s halfords fold up bike that I am getting back on the road 20 x 1 3/8

As it goes got a pair of tyres for the Mrs bike yesterday, cycle tyres sizes are a real faff are they not :rolleyes

This may be of help https://www.cyclinguk.org/cyclists-libra...tyre-sizes although it's not complete I couldn't find tyres I was looking for on it  :rolleyes 

This explains how all the different sizes work https://www.evanscycles.com/coffeestop/a...asurements