i run et25 15x7 195/50r15 tyres on my car at the mo, and it does scrub when there people in the back. the scrub is only enough to rub the letterin of the tyres its not cutting into the tyres
if you where to run 195/45r15 tyres i reckon u wouldnt get scrubbage, either that or 195/50 tyres that have a straight tyre wall instead of rim protector ones