Evening all
I found a set of astra mk4 edition100 bbs rx alloys same as calibra ones altho i  4stud,would i have any issues in putting these on my calibra going to get low profile tire to keep same rolling radius as 15s on it now,posiibkey kw coilovers or -40mm springs shock drop on cards aswell

Not sure what size wheels you are talking about but i run et45 17'' bbs wheels with 215/40/r17 tyres and i just get away with the tyres not rubbing, might be a bit close with et35.  But like i said it depends what diameter wheels you are talking about.

 Thanks for the reply there astra edition 100 17inch il check the widt and see