Oo - i have a few things to say to this. Agreed Michelins design, carcass structure, compounds and quality control are exceptional You are right to some extent, because a TRX would not take advantage of the developments of modern chassis design. However a TRX is still one of the best options for these 1970s designe Ferrari chassis set up. Hmm not quite so simple. The modern chassis set up has enabled a car to keep modern tyre footprints in contact with the road, and the very clever suspention and power steering has enabled modern cars to over come the handling deficiencies that are caused by modern wide low profile tyres. However lets not pretend that your modern Mercedes would be a nicer car to drive if it was put back on its standard 16" wheels rather than the silly 20" AMG wheels that are really a fashion accessory. No it hasn't. It has now given it exceptional levels of grip so you don't wheel spin as much, and it can stop on a sixpence. However what it does mean is that when you are flying round a fst sweeping corner you wont know you are going to spin untill it is all over. Unless you are racing, if you put it back on 165R15 Cinturato CA67 it will be much nicer to drive. People say that because classic cars do actually handle better with the right size tyre with a proper period carcass design. Ferrari did loads of testing before they decided on their tyre choice. it wasn't just guess work. its real live testing with proper test drivers. ( have you seen the Fangio film on here https://www.longstonetyres.co.uk/pirelli-collezione.html ) This extra grip thing is a funny enigma. When you are cornering in an old car it isn't clever enough to stop the inside of the tyre lifting when you corner like a modern car does. So extra grip that is lost suddenly, is not beneficial. Lets just dispell some of the theories about these classic tyres i am working so hard to try to flog you. modern tyres have more grip. well one of the main improvements in grip levels is down to improved compounds - well that isnt an advantage because the current productions of classic Pirelli and Michelin use the modern compounds so the levels of grip offered are improved. Yes they may have a smaller footprint. the amount of grip derived from a square inch of tyre foot print is increased by increasing the weight pushing it onto the tarmac. So yes you do get more grip per square inch with a thinner classic tyre, but yes it is true a wider tyre will give more grip and decrease wheel spin and improve braking, but that is only if the cars chassis set up is capable of keeping all that foot print actually in contact with the tarmac, and old classic cars do not do that unless you give it a load of adverse camber, stiffen the springs and slam it on the deck. none of which makes a nice road car. A modern classic tyre made by Michelin or Pirelli offers modern up to date compounds, phenominal build quality, all built onto a carcass that is intended to be used in conjunction with a classic car chassis. They handle better.
Let's just say we agree to disagree and I'm not selling anything on this site. But I believe you are making many erroneous statements regarding chassis and their tire interactions, as I very good friend was a preeminent chassis set up person. Worked on some of Joe Buzettas factory racing Porsches and other very high caliber cars including F1.
Thereby lies my point exactly. You aren't really properly reading what i have to say. You are basing your argument on something your mate knows about how to making a race car return better lap times on a perfectly smooth race track. What this discussion is about is tyres that are being made for road cars (often at the request of car manufacturers.) by the worlds best tyre manufacturers to compliment the chassis set up that is subtley different to that of a modern car.
