7* SLK55 AMG

[richieluv76]

so recently there have been slk 55 amg bps on replayable events, i had the car at 6* with all legendary parts fully maxed at 6* and that comes out at 803pr, ive just collected enough bps to up the car to 7* and the pr has dropped to 798!

i know when changing a 6* epic part for a 5* lengendary part you'll get a pr drop but i dont think ive ever seen a pr drop when increasing the star level of the car......... so what gives?