I have the feeling that anything that say Energy/Eco better millage a gallon is not the tire for our Murena's.
At the moment I use tires that are out of production and the car feels perfectly fine.
My 2.2 setup is no longer original so my opinion doesn't count anymore.
Robert has the Uniroyals ( bit back in this topic) but was not impressed.
It's difficult to give a advice, but my best bet is to go for a harder sidewall at the rear.
Also shocks that are 30 years old can be of influence.
The 1.6 I have shortly has original wheels.
It was also a bit loose at the rear.
I mounted 2.2 springs and road-handling improved dramatic.
My conclusion is that the back needs to be a bit stiff for better road-handling.
The car is aa few cm higher at the rear now.
On the front I put new Koni's and stiffer rubber in the stabilizers.
I am not afraid to take high speed curves with this car.
Later on I put Spax on this car to.
It made a big improvement on the 2.2 and I expect it will work for this car to.
I try to keep the original wheels this time.
Not much help i'm afraid,
Greetings herman