I don't like the p@h wheels. I had the same issue with the medium for a dwarf and it just doesn't spin nicely when attached to the bars even when it
does fit. Rattles like anything too. It's slightly better on a stand but again, it really rattles.
I have a vary high opinion of the trixie wheels, the 28cm one should fit in the criceti and it's got a narrow running surface so it's taking up less width as well. It's free standing which makes it a bit more flexible for positioning. Also cheaper than the p@h ones; the large is £17? Nah lol. I've had a trixie for 4 years now and I'm only just replacing it which is one heck of a lifespan.
https://www.zooplus.co.uk/shop/pet_b...et_toys/174195