One clarification for those looking at this thread as this caused me a lot of confusion when I changed the tyres.
The CrossClimate and the Agilis CrossClimate (both mentioned in this thread) are different tyres altogether (with very confusing names).
The CrossClimate is a car tyre. You can still fit it on a California provided you get the right size and load rating. There’s been 3 versions of it: the original CrossClimate, the improved CrossClimate 2 released in 2020 and the CrossClimate 3 released last year in 2025. There hasn’t been a CrossClimate 4 yet.
The Agilis CrossClimate is a heavy-duty tyre for commercial vans with reinforced sidewalls and overall construction. It will be more durable if you hit the curb a lot, drive on rough roads or enjoy potholes. But it’s noisier and less confortable. There’s only been two versions: the original Agilis CrossClimate and the new Agilis CrossClimate 2, released last year in 2025 (unrelated to the CrossClimate 2, which was released 5 years earlier). The Agilis CrossClimate 2 is not yet available in the UK or Ireland however (seems to be US and Canada-only for now). So in practice, if you want the heavy duty tyre, you have to go for the original Agilis CrossClimate.
When I went to the tyre shop, I asked them to fit the CrossClimate 3 but they came back and said that the only tyres that fitted my T6.1 were the Agilis CrossClimate. I knew little at the time so I went with their recommendation. But now realise I should have insisted on the CrossClimate 3 since I don’t need heavy duty tyres and was looking for quiet and comfortable tyres for long journeys.
In practice the Agilis CrossClimate are fine. Don’t seem to be any worse than whatever Bridgestones were fitted from factory anyway.