Hey Guest!
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> Here's How << 
I don't have a TR6 but of course that doesn't stop me from having an opinion. The Vredestein Sprint Classics in 185/15 look like a good choice for obtaining original handling from a quality tire. I have them on my 'non TR' LBC. Only possible problem is that there has been a disruption in production and they may not be available for the next 6 months.
On my TR4 I have Bridgestone Potenzas in 165/95 and like the handling, does not feel heavy to me - but that is with a wider wheel.
Choices abound.
Only possible problem is that there has been a disruption in production and they may not be available for the next 6 months.
...165HR15; not 185 as some prefer. I am sticking with stock...