Originally Posted By: CapriRacer
Lots of misunderstanding here. Allow me to clear it up.
The JD Powers tire survey is an off-shoot of their new car survey. It is done at the same time and with the same people.
So it is a survey of OEM tires - but it is also a survey of how well the consumer liked the car. I remember looking at the very first survey some 30 years ago and it was obvious then that there was a *halo effect* - if the consumer liked the car, they liked the tires.
Soooooo,
Because Michelin can afford to be picky about which car they get sourced on, they can pick and choose cars that are going to result in happy customers.
No, Michelin has to provide tires to the OEM specs - and the specs are the same for EVERY tire supplier - BUT - Not all the specs are the same for every car (truck), so once again, Michelin can pick and choose.
The fact that Firestone is delineated out as different than Bridgestone kind of shows how unsophisticated the survey is. Bridgestone gets to pick which car gets which brand - and I would guess that they reserve the [censored] brand (pun intended!) for the higher end vehicles. I am sure all the other tire suppliers do the same thing.
One of the really weird things is that a tire supplier can supply the same exact tire to 2 different platforms and get completely different results.
And because Michelin has a certain image, it does well in these surveys.
Ya know the funny thing is....I don't find that weird at all based on some experiences with OE tires. My guess would be that some OEM specs are "more equal than others" in relation to the particular application. If the same spec and tire are used on a car that's 600 lbs. lighter and with different suspension geometry, it stands to reason that they potentially would've have the same performance or the same perceived performance. Not to mention the buyer demographic might be significantly enough different than the other model/platform.
It reminds me of Tire Rack's tests where they usually employ the same 3 Series BMWs as test mules. My car is a 1000 lbs. lighter than these BMWs and has considerably different underpinnings. I don't view TR tests as particularly applicable to what works on my vehicle other than an acknowledgement that they're using an equalizer methodology. The same may hold true related to differences in these surveys where, depending on the model/platform, some buyers are looking for more performance capability than OE and others are looking for more comfort, etc. ....but most just want to love their new car and tires.