I absolutely love the Michelin AS4's on my wifes F15 X5. They stick like glue on that thing, are very quiet and are wearing well. I sell a lot of AS4's to clients in the shop, it is my go to all season for normal people wanting a quality non-RFT replacement.
I think they would work well on the F90, but obviously won't be up to the task of translating all of the torque into forward thrust at low speeds.
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