believe it or not, all 3 RHD standard bugs that i have personally lowered myself and fitted with wider rims, have all had less clearance on the left side too!!!
go figure?? the issue is not with the actual ride height being lower on one side, all 3 cars sat even.. but its just that there seems to be more track on the left side... very strange... nearly everyone ive spoken to about this, has experienced the same thing. on my blue bug i solved the problem by running excessive negative camber and rims with the correct offset for the width...