Board Thread:Game Discussion/@comment-27489835-20160112035355/@comment-27505406-20160114081944

Problem is that you need to already have some good amount of R$ to upgrade the cars that you use before the boss fights. At season 2 I had to spend some gold to upgrade RT cause I couldn't finish the last 2 races before I do the boss race and upgrade my rank so I could use the next pair of cars :(