The bbs wheels where 7.5" with et35 and they rubbed against the coil overs all round.
The wheels on there now are mini d90's, 6" i think with et35 and they clear by about 1cm.
I dont know how different it is on a mk1 with the mounting of the hottunings, mk2 stock offset is et38 though and mk1 is 25 so i gues you would have a bit more room depending on width.
I have read that hottuning coilovers mount alot closer to the wheel than other brands.
Hope that helps a little.
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