I have an oldish Rando tyre on my single speed, and they seem to be developing small cracks around the sidewalls.
I have had tyres do this before, while others don’t. Do I need to be concerned about such cracks developing? Is it the sign of a cheap tyre?
I had the same thing happen on a set of mine. They were probably 18mths plus and getting pretty worn by that stage, so I played it safe and binned them. They make em tough and the sidewalls probably aren’t likely to burst, but with your luck?!.. I’d buy a new tyre.
i had a similar thing happen to a rubino. i think it happened when i had a slow puncture and ended up riding on very low pressure for a while, it kind of squished the tyre flat and damaged the sidewalls. I still kept riding on it after that for quite a while though and it held up okay.