Talk:Cars (Fully Upgraded)/@comment-26926892-20150917170301/@comment-26249703-20150917175803

The RSR is indeed more expensive to fully-upgrade however:

RSR:

PR:84 (Racing Spirit)=235GC

PR:85 (Masters of Speed)=410 GC

PR:86=690 GC

GTE

PR:84 (Racing Spirit)=390 GC

PR:85 (Masters of Speed)=510 GC

PR:86=780 GC

So the RSR is cheaper to buy and cheaper to upgrade to high PRs, this is only outweighed if you were able to earn it for free, which I gather you weren't.