Hi! Had this same rubbing issue when fitted my 195/65 R15 Dunlop Graspic DS2 Winter tyres on my non-VRS fabia,

also only left rear arch at one square point rubbing- solved by removing the plastic inner arch and ''hammering'' the rubbing spot a bit away, refitted the arch inner and no rubbing since!

UPDATE

70mph is actualy 72mpg on sat nav

We got a snow covering this friday while i was at work probabley a couple on inchs as i work in care we started to get tons of calls at the office saying day centres where shutting and 2 different clients and 2 different day centres where stuck there as taxis refused to pick them up. So i jumped in the car a went for them the difference with these tyres on is amazing it goes any where never lost traction once and every road had a good covering with no gritters in sight. I even went up a realy steep hill that normaly gets closed in bad weather no problems i even passed 3 crashed cars on it and one parked sideways half way down it and when i got to the top the police had closed it off to down traffic.

I would never have beleaved how good these actualy are until i had tryed them my self its like driveing on none snow coverd roads with summer tyres on grips and goes amazing totaly amazing.