I think the TT100 tyre (with Dunlop K81 identification) followed the KR73 (front) and KR76 (rear) in production. The latter 2 were race tyres whereas the K81 was a road tyre. All were triangular in profile.
Agreed - starter rollers are a great piece of kit for starting a high compression four stroke without kickstart. I had a friend fabricate a set for me and it’s still in the garage.
