Writing about the Michelin Energy Saver
Driving on a combination of roads
for 1000 spirited
Replaced some old goodyear eco tyres with these, and my comments are as follows. First of all, the fuel economy of the car improved slightly from about 9.9l/100km to 9.3l/100km (this is the real life value calculated from amount of fuel put in at the pump, and tripmeter reading - averaged over the 3 months prior to buyng and the 3 months after buying the tyres). Same air pressure in both cases. Car also feels like it has less rolling resistance - the same press on the gas pedal now results in slightly more acceleration than before.
The dry grip is quite good. Not perfect, it's quite easy to get the car to understeer or skid if you try. But the grip under braking is phenomenal. Goes from 80km/h to zero in under 3 seconds in a car with no ABS. The wet grip is good - the grip limit is almost identical to the dry grip in fact (I only got into a tiny skid in the wet going round a sharp corner on a steep hill - it was more of a shimmy than a skid actually).
Road feedback. Hmm, the steering gets quite soft and non-feedback-ey under certain conditions (ultra heavy rain with puddles), but the grip is still there. When skidding there's enough feedback to let you feel your way out of the skid. Even in the wet (which is the only time I got into an unintended skid - but managed to arrest it within a second and didn't even get out of my lane; similar skid with my old tyres and the car oscillated 3 times before it stopped moving).
Progressiveness is ok. You can feel them starting to lose traction, and if you keep pushing a skid gradually develops, but it's quite predictable.
Wear - haven't driven enough to say, but so far no discernible difference in tread depth
Comfort - no different to my other tyres. What's different is that since eco tyres use silica instead of carbon black, so the skid marks are much less visible, and when you feed in too much power and spin the wheels, they make a scraping noise instead of a screech. I might buy them again, but they cost me â‚¬97 each (total â‚¬388) compared to something like the Dunlop Sport 01 being at about â‚¬70 each. But with my low mileage I will probably change the car before the tyres get worn out.