Spiggot rings take the gap away that may be there if the centre bore of the disk is different from the centre bore of the vauxhall disks.MarkyG said:what exactly are the spiggot rings? and why wont correct sized holes do the job? im not sure but those 5 stud holes look like 108PCD, on the porsche discs the PCD is 5x130 which suggests to me the holes may not even have to cross.
Yeah you could do,make sure it is central though,don't go wrecking the porsche disks.MarkyG said:so i just print that out, check the scale, tack it to my discs and go drill happy on them?
Yes, sorry, that's right - I had wheels in my head not discs!MarkyG said:surely i need the diameter of the hole in the centre of the disc and the diameter of the bit the disc sits on on the hub (56.6mm) and the ring just sits in the gap between the two?
The wheels will still sit in the same place they are now. If the bore or the wheel is bigger, but you have been alright up to now, then I wouldn't bother with any spiggots for the wheel, but they may be an idea also.MarkyG said:what function does the flange perform, cos ive got aftermarket wheels on at the moment and im pretty sure they have a centre bore much larger than the hub.