Thanks Denalio for your answers.
Trying to upgrade the wheels/tires from stock 18" is somewhat challenging. Between RFT, TPMS, all-season vs. summer, cost, etc. maybe the best answer is stick with what I have. Certainly no bling, but it does its job well.

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2011 BMW 740i
2011 Toyota Sienna Limited
2008 X5 3.0 Space Gray (sold)