The number of stars required in Grand Theft Auto: Vice City, to attract what is referred to as "federal love." Federal love entails being pursued by multiple Black SUV's driven by the FBI. A truly magnificentkilling spree generally precedes the acquisition of 5 wanted stars.
I thought I could handle all the S.W.A.T. vehicles and cop cars when Bam! I killed yet another police officer and my wanted rating inflated to the dreaded 5 stars. Then I knew a whole new world of hurt.
R8 5 stars is used in HW (Happy Wheels) Levels. Stars are a ranking system , 1 star is lowest and 5 being the highest. This can boost their levels higher on the user created levels board. Usually acompanied by "If you enjoyed" or "if you survived".