widest

Hi all, I am looking to fit to my car (Pre FL cupra) wider tires. the size i am interested in is 255X35X18 , fitted over 18X8.5 ET ~45 I know that in the GTi this is possible but marginal , but i have no clue about the Leon. does anyone know if that will fit (at around 2 degrees...

Has anyone Fit 10 inches on the leon? Has it been done? Im seriously after doing it. Im getting my arches rolled out by 1 inch. will i need to go more. What offsets and sizes should i be looking at. The wheels in question are 18's (and no they are not porsche!)

Im looking into purchasing some speelines or MO'S and after reading Bills acheivements running 245 x 17" i was wondering what other wide set ups poeple were running. My cars a daily driver but i need more grip, i'd like 17" x 225 mo's but they aren't releasing the 6 spoke version for another...

as above really.I have a set of mint michelin pilot tyres in my shed that are 255/35/18's you reckon they would fit ??