wookster, they seem fine. Only problem is a slight wobble in the tyres. There’s loads of latex residue and I think the insert has stuck to the inside of the tyre. Thought a ride would sort it but they need letting down and pulling straight. Started @ 18psi front and 22 rear. Mid ride let em down to 15 front and 18 rear. No rolling about on the rim and very surprisingly not much drag. It’s weird terrain here, very rocky and loose over hardpack.Bought the Cushcore to protect my carbon rims, time will tell.