I have got a 2002 audi a4 b6 1.8t avant. I have got some 8x18 et 41 mercedes wheels with 215/35 18 tyres i want to put on. The holes are already the right size so no drilling required. Got spigot rings 66.6 to 57.1 The problem is the wheel bolts off my standard 16" audi alloys barely poke through the wheels. I need to get some new longer wheel bolts but i dont know what length i need anybody have any ideas? Also what size spacers will fit? the car will be getting slammed on coilovers soon. Thanks.