I've used the 8J clio cup wheels with 225s and they didnt rub, I've now got 8J Alleggeritas with 225s and still don't rub that I can notice/see on standard suspension.
The gap at full lock is small so under compression I'm sure they might rub but it depends how much lock you're putting on, normal driving you're not going to take many corners at full lock.
Either way it should be fine, as for side wall height I'm sure we've all watched F1 cars and they don't seem to mind having a big sidewall so I doubt the what.. 4mm'ish? difference is going to make much difference on a Clio.