Given
88%
while driving a
Lexus IS350
(225/45 R17) on
a combination of roads
for 15,000
spirited miles
I've had these on a Lexus IS350 F Sport for about 3 months, had the factory Dunlop SP Sport Max on there before. My previous car was a Mazda 3 SP25 which came with the same Dunlops from the factory, changed those to Michelin Pilot Sport 4 after 90,000kms. Put 30,000 kms on the Michelins on the Mazda, and about 15,000 on the Goodyears so far.
I also fitted slightly wider 235/40 18 fronts (original 225/40 18) and 265/35 18 rears (original 255/35 18). I did the same for the Mazda, 225/35 18s instead of 215/40 18s factory.
I can say that the Goodyears have firmed up the steering much more, in good way, where there is resistance and feel on turn-in that was not there with the Dunlops. much more grip in all conditions, esp. in the wet. No tire squeal at the limit either (unlike the Dunlops). The ride is much smoother than the Dunlops as well.
The Michelin PS4 was also a much grippier tire than the Dunlops on the Mazda (absolutely incredible grip in the wet, can pretty much drive as if the road is dry), but much less feel and they felt much softer and more of a touring tire than a sporty tire, quieter than the both the Dunlops and Goodyears. The Goodyears are a better balance between the hard sidewalled and low grip Dunlops and the massively grippy but overly soft Michelins.
I would sum up by saying the Michelins are the better tire overall UNLESS you value sporty dynamics and feel and feedback highly, in which case the Goodyears are a better compromise, albeit with slightly less overall grip. Either way, much much better than the Dunlops. Hope that helps!
BTW, thanks to tire-reviews.com for all the reviews and detail that helped me make my choice, very very useful!