Board Thread:Game Discussion/@comment-34956162-20180529222034/@comment-28169398-20180530164221

96.49.214.129 wrote: "A new Career Series, Endurance Legends, will be added to the Career to retain all of the 10 lap races from Endurance Kings. This Series will be a mixture of old races - with their Fame and R$ rewards carried over to the new series - and some new long format races."

They are adding this new Endurance Legends series to Career, not Motorsport - where only a single car is required to get to 100%. It could be quite possible that you will need ALL the LMP1 cars upgraded to a certain PR to gain access to the new 10-lapper. I don't think there is precedent for that. I do not recall any multicar series, where one of the cars upgraded enough cannot reach the last race of the last tier, even without owning the other cars.

The other cars are only usually needed for showcases to get 100% Completion.

And if they keep the EK 10-lappers the same, the minimum PR is 86.0... though that is kind of moot as you need to upgrade into the mid 90's on an LMP1 to unlock the tier.