Many thanks lads, LiamC, 1275 , nissan boy, for an outbreak of uncommon common sense support on the MSC to an unintended DIY created serious safety hazard of using/running oversize 185 tyres/wheels/spacers in a potentially dangerous combination that has resulted in part shredded rear tyres. 
This dangerous situation should be immediately rectified by a competent person before that vehicle is driven on the road again. 
Make your own good luck.