I started a thread a couple of weeks ago trying to find the correct size for the rear folding step bolts for a 90, without any success, which amazed me. All the knowledge on the site and couldn't find the answer to what was a simple question. I said I would post the size when I sorted it, so here it is.
I first thought it was M8 but on closer inspection I found the pre-threading in the base of the crossmember was clogged with waxoyl and when cleaned out
it was in fact M10 which was what I expected but was not certain wether it could have been 3/8 inch. So the size is now on the site for anyone in the future.
Alan.