Out of curiosity, what tires are you running on your sienna. I'm assuming those are 16" rims. I put zenna sport lines on my Sienna. They're okay but despite being the correct load rating, I don't trust them. Tempted to go to a light truck tire as ours is also pulls double duty as a work van.
Edit: idk if they live in a city or not because accounting for extended service intervals, some vehicles may end up getting ill maintained.
Like say someone buys a car and the oil service intervals is 20k km, they don't reach that mileage but they've had it a few years. They won't change the oil. Stuff like that. Lots of stop start cycles but not much heat gets into the oil so milky oil and the like.
20k km is easily doable for me but my commute is mainly highway.