Back on the topic of wheels,
Here are a couple of pics of the Australian Volvo 850 Super Touring ride car (ie for corporate guests, and is in no way close in spec to a BTCC car or ASTC car - in the day it would have been quick enough to make sponsors squeal though). Its an 850T5 or 850R. Bootlid says it's an R, but it has 1994 style tail lights and really it's hard to tell from any of the rest of it.
These are largely really old pics, taken with whatever digital camera technology was around 10 years ago -
These two are from a visit to the Bathurst Museum we did in 2004
Obviously they're a Titan wheel, but certainly not using a typical 850 style wheel bolt. Nuts are sitting proud of the rim surface which would make sense with the sleeves that are in mine.
This car may very well be the same one but I cant confirm. Pic was circa 2006 maybe.
I had the details of the owner, but have long since lost them and he was doing some sort of improved production racing with it, but I dont have any further detail.