Quote:
Originally Posted by spetsnazos
Typically an OEM such as BMW will source tires from two suppliers to ensure that demand can be met if there are production/shipment issues. That said, for a small car line such as the M2C, I wouldn't be surprised that they sole-source Michelin(which they did).
The OEM tire is specifically designed for the car. It's gone through numerous iterations on the M2C for optimal performance in dry limit handling, dry handling, wet limit handling, wet handling, snow handling, snow stopping, braking, acceleration, noise and treadwear. It was built and tested in the exact size that is on our car.
The replacement tire is designed to whatever car the manufacturer decided to test with, could have been an S4 for all you know...or maybe it was extrapolated from a different tire size(225 instead of a 245 or 255) altogether.
Thats not how it works at all. When a new car is being built, tire manufacturers will submit tires to an OEM through a fairly robust RFI/RFP/etc process. After the development starts, there are multiple iterations from both tire manufacturers and oem manufacturers to ensure that the performance targets are met.
OEM's don't just grab "pre-approved" tires off the shelf.
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A Michelin PSS is a Michelin PSS, there's not a "special" one for the M2C! Sure there are different marketing variations for Mercedes and BMW with rim protection etc, but not bespoke versions. The same standard PSS can go on any vehicle, size permitting.
Are you saying the OE (factory fit) tyre is different from any available retail, therefore you can never buy the same tyre again?? What possible benefit would that give either BMW or the tyre manufacturer?
Re terminology, an OEM (original equipment manufacturer) is the tyre or part manufacturer, BMW isn't an OEM.
OE parts are those fitted by BMW at build.