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My 2020 LR+ is currently at the service center for the same issue with 4,500 miles on the odometer. Rep said they can replace the half shafts as a temporary fix, but they're still awaiting a long term fix from engineering.
Order four identical P245/45R19 as specified in the owner's manual on page 214. I also confirmed that's what I have factory-installed on my LR+ with the Tempest wheels.