Just got the thread mention ay, bit slow, lol...
Yeah i get scrubbing, mainly front tho & only have the front guards rolled/slightly pumped (courtesy of 'Sydney Guard Rolling' - iirc his name is Nelson) he did also mention the turbo guards are slightly different than the normal TS styles, ie the inner plastic guard & the return of the lip etc...
Different brands of tyres also have varying edge constructions, ie some will scrub less/more than others... atm im running Hankook's front & still have the original tyres on the rear (came with rims)