You've got 19" wheels on though, right ? 224s are 18", same size as my 108s. My car is lowered, but I can take the spacers off because of the offset on the 224s... So they should fit fine with 255/35/18 tyres. M fitment tyres are 255/40/18 but that's not what most non-M drivers use on 224s. Not keen on stretched tyres either because of the way they look, and the fact it simply exposes the rim to damage.
At the moment I can still get Sessanta's from the supplier I'm looking at, just need them to stay in stock for another couple of weeks