I've bought a good few Honda 500's both new and used, and always fitted TT100's to them, as I have with the Benelli Sei and the CB750's. They're standard fit on the Trident, too.
To me, they are the perfect tyre, except for wear rate, which can often seem a little high. I usually manage around 4000 miles from a rear, and more from a front tyre. I've ridden friends bikes of the same type as mine fitted with modern tyres that appear to have a lower profile, and they just feel odd, perhaps because of my familiarity with TT100's.
When I was buying new in the 1970's, the dealer that I used most would always recommend a change to TT100 tyres, always 4:10 front and rear, although the 3:60 was available for the front, even then.
Perhaps it's just a habit that's stayed with me ever since, but I've never seen the need to move away from them?
