There's no standard tire. My suggestion to you is continental cross contact . I just put a set on my Mex and they run very quiet and do great in the snow.
Hello Anne. The "standard" tires that came on your RDX were Michelin P235/60 R18 high-performance all-season. These are the tires that were matched with the RDX for peak performance characteristics - fuel economy, road noise, etc.
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