The new HZ steering wheel produced by Rare Spares is as per original, including the imperial size threads on all the screws. this means the caps, adaptors etc are all interchangeable with original ones.
Current ADR requirement is that the wheel spokes must conform to the required thickness and performance. These wheels are ADR approved. earlier HQ series had the thicker spokes.
Here are a couple of comments from restoration specialists."Had a look and feel of the new GTR/GTS/SLR/SS steering wheel at Rares Virginia yesterday, fantastic job, they are perfect."
"Got my brand new gts steering wheel yesterday in the mail from Rare Spares looks like a brand new genuine wheel.It has the 3 mm thick spokes like hx hz wb, not the 5 mm thick hq and hj, but you would be hard pushed to pick the differance between this wheel and an original other than it has zero wear." so my recommendation is that people look at the new wheels and will be then able to make a judgement.