I believe so they have now gone to a ZZS tyre as a new replacement, seams the stock of CR500's has sold out before they have released the ZZS.


The 245 40 15 ZZS is due for release Q3 2015 but no sign of it yet, only takes a 6 month delay and your screwed if you need any.


The tyre was made specially for Caterham and they have been sold out on there parts web site for at least the last 12 months and still are.