Are they still using chassis grommets as buffers?
Be sure to get advice from the supplier about 'fitting with a slight twist' as I could not get mine to a clear my tyres. I ended up removing these and fitting original VW pipes instead. I never did bottom the reason, I re-positioned them 3 times after advice from the supplier, before giving up on them and fitting new VW parts.
My only through was my bus has factory power steering so different uprights but then it is just a standard VW. The standard Carat wheels fitted with normal 185R14C tyres, had worn through the outer black plastic (both sides were catching on full lock) and although the braiding underneath was still intact, I figured the MOT station would fail it anyway and I just didn't feel comfortable with them catching and wearing though so off they came.
I was told my situation was unique and they had never heard of another case...so you should be OK then.
Martin