in Improving your pride and joy and how to fix things
Sat Jul 09, 2022 9:36 am
• | 573 Posts
The size you need is 12 x 1.5mm R13 26mm thread length. The R13 bit is the radiused seat used on original Eriba steel wheels. I recently purchased a set of these but with the tapered seat to suit a pair of wheels I got with new tyres (kept the originals for winter storage). Bolts seem to come with 17mm heads in the UK rather than the original Eriba 19mm steel bolts. Doesn't make any difference other than making sure you have the right socket to fit them.
Here is is photo of the original and the tapered seat alternative (black one).