Alloy wheel fitment issue.

[VRDan]

Hey people 

I am looking to invest in some alloy wheels that are 15x7'' does anyone know if 205 50 15 tyres are a good fit or might problems occur? I may invest in some stretched rubber in the near future but would like to fit these for now if possible.
Also what ET should i look to get them in there are two choices ET20 and ET38, as i understand it the smaller the ''ET'' the further out in the arch the wheel sits. I have standard arches not rolled or anything, is ET20 a good fit or is that pushing it. Maby spacers is a better option?

Help appreciated as im eager to get rid of the standard wheels and some rims on sharpish. 

 

[Wayne]

Et38 would be better than et20 which would need the arches rolling.

[Wayne]

Refernece tyres, 205/50/15's would be fine or you could switch to 195/50/15 which are cheaper.

[VRDan]

OK cheers guys thanks for the help