I understood the purpose of Denovos as they had canisters of some sort of magic instant fix around the well of the rim and they could be driven deflated. VRG 77T, my Pageant Blue Clubman Estate, was supplied with Denovos and they actually looked quite good too, thanks to their low profile and wider tread - all accommodated without those silly wheelarch extensions that later minis were given.
Now you come to mention the difference between the brands of TD, I recall that Ma's earlier TD-equipped Metro, B662HTY, came with Michelins and F781JVK came with Dunlops. There was a noticeable difference between the two cars in terms of how much they understeered but when Dad got involved and complained following a damaged Michelin on HTY having to be replaced with a Dunlop, he was told that the TD tyres were all made to the same very specific recipe which meant that both brands would be entirely compatible with each other. It wasn't KwikFit that gave him this information so perhaps there was some truth to it but I always believed that there was a very detectable difference in the handling of cars equipped with the different brands. Now - thank goodness - the awful things are long since extinct and most surviving Metros roll on either the earlier, imperial 12" wheels with 135 or 155/70 rubber, or they've acquired those attractive alloys from very late 4" cars. I know of a few Metros that still run TDs and that worries me because a) I don't have much else to worry about and b) surely these tyres are now all so old that they should be disposed of on the grounds of age?
On 1980s car ads though; in 1986, I bought my first ever split new, previously unmolested, factory fresh car, this was a bright red FSO 125P - D641WTF. I actually enjoyed that quite a lot but then it did drive so much better than the Lada Estate I'd had a few years earlier and was much livelier than my beloved Morris Oxford, if nowhere near as quiet, comfortable or reliable.
Then I remembered this:
https://www.youtube.com/watch?v=4Da8TOyJ_YA
Doesn't that make you want to rush out and buy a 125?
So then I found a nice A60 and the Polski had to go. I'd owned it for six months and had sorted all of its factory-induced maladies myself during that time so it was well sorted and had acquired - from a scrapyard just by Staines - an Italian 125's dashboard, in as-new condition and complete with woodwork, to replace the creaky, fragile Polish issue plastic dash. The supplying dealer (In Reading, near where I stayed when I bought the car) bought it back from me and get this: They gave me a £10 profit on the price I'd paid as they'd suddenly found themselves with a waiting list and no cars to fill the orders which allowed them to add rather a lot to the retail price and they were just grateful to have the chance to satisfy that order! Shame that doesn't happen so much these days, with the possible exception of the BMW Minis during their first year.