shivy

Hello, Today replaced the old/original wheels with the Audi A3 19565R15. Yes they are bigger, but... they do not rub on the plastic covers, even if full lock I have 1 finger clearance (1cm). Car is a bit higher so better for pot holes and bumps However I would like your suggestions about the following points: 1) the centre bore is the same diameter but it does not stick out as the old/original rims, all the way through the old ones, but only about 1cm or less on the new ones (see pictures) But the ET is the same as Ibiza. Does this mean the new wheels are not well secured ? 2) the acceleration has gone, does it mean they are too heavy for the car ? But many ibizas have 17" on them and no problem. Will braking also be affected ? 3) will the bearings suffer and die prematurely ? 4) less fuel efficiency with big wheels ? Same time the acceleration peaks are gone, so no extra fuel injected for that ? Thank you