International Power-Match

Hi,

bonus for achievements are the followings:

25% = 7GC

50% = 11GC

75% = 16GC

100% = ?

At the moment i'm at 52%, next race i unlock time trial for 650S GT3. This car is limited edition and available in 10 days only. Do i have to wait 10 days to unlock time trial and get 20% off or as it's a limited edition there won't have 20% of and then i can continue the career ?