I am getting approx 0.2 miles per kW less than when I had the Hankooks. It does improve with wear, so now maybe only 0.1 less, but overall they are softer tyres.
Overall on balance I would say definitely the Michelins are better. Hankook is a little better for efficiency, but all else goes heavily in Michelin's favour.
I am on PS5 (currently only on the rear), but all need replacing soon. I would not recommend the Michelin PS4S for an EV, but the PS4 or PS5 yes.
In saying that I have not yet decided on what I will replace mine with. Maybe Goodyear F1 Asymmetric 6, or there is a Continental Sport 7, but in the past I found Continental wear really fast so were not economical to run (That was on ICE vehicles, so I expect even worse for an EV).
I'm trying to find the best efficiency, while not loosing too much of the driving enjoyment, wear and performance that the PS5 gave me.
Unfortunately tyre reviews mostly are for marketing and clicks and really do not give solid usable information. The tyres tested and the way data is conveyed can be misleading. For example an 18" 45 profile 225 width tyre may be great in the test, but will not necessarily translate the same to a 19" 40 profile 255 width version. Also being tested on light weight ICE cars.
I'm doing a lot of reading to try and narrow down my options - will probably in the end make a mistake anyway...
