Z or W Tyre Repair

I've always assumed that the law says that tyre repairs must meet
BS159F and therefore Z or W rated tyres cannot legally be repaired.

Every new tyre I've bought has needed a repair within the first month. Apart
from the Azaro's which lasted a year but need a repair right now, but I'll
be changing them instead though.

Yeah, same here and I've never given a repaired tyre a 2nd thought when
riding.

This seems logical and makes sense. Whether it's overkill or not is
another issue.

However, surely the temporary repairs the RAC et al offer are also
illegal since they cannot possibly meet BS159F. Surely you're not
allowed to drive a temporarily unroadworthy vehicle?

So could it be that BS159F is a guideline for the industry rather than
law?

This is true BS159F is not a legal requirement hence the confusion. Many
manufacturers believe it is perfectly acceptable to repair these tyres and I
would respect their opinion especially when it goes against their commercial
interests.

I'm beginning to wonder if the whole BS159F thing is an excuse to sell
more tyres.