hi people im crap with offset so was wondering if i put 17inch wheels with an offset of et30 onto my girlfriends fiesta st would they sit out too far or need spacers as original offset is 52.5 i believe

 

its the opposite way of thinking mate the lower the ET the further they stick out from the hub, as et30 alloys will be the same as fitting a 22mm spacer so on most fiesta's that would be perfect on the rear as the axles sit in too much anyway but may stick out a tad past the arch on the front, as thats rwd or foreign offset

 

This is Cherie's Fiesta ST with 12.5mm axle spacers on the rear, 17 x 7 alloys with a ET34 (so are in towards the car 4mm than ET30) and lowered on H&R:









You wouldn't really want to go much lower or wider (lower ET) as it might start to catch. 4mm might be ok though and easier if not lowered. Doesn't catch anywhere at the moment though.

 

ah right thanks for advice guys think ill have to leave them