The wheels do look small compared to the 21" ones, seems they don't fill the wheel well as much.
Most reports cited the 21's as being a bit overkill, since you can feel their weight. I can attest to that from driving the presser, and also to some impact harshness. I expect the 19's to be better in that respect, but my only drive so far is the 5-10 min trek from the dealer. I will verify tire pressures before posting other observations, other than the 21's do look better on this.
The vehicle is so new that Mazda doesn't have splash guards listed yet, and I'm on the "Notice me!" list from WeatherTech Canada for floor liners, not available yet. Mazda's oem mats are expensive for the CX-90 and for the same price I'd rather have the WT's added protection.
One of the sales reps at the dealer also directed us to ... Amazon for navigation SD cards. All Mazda products are navigation-ready and you only need to add the SD cards to activate it. The oem card is about $560 for all vehicles, but the CX-90's is an extra $100 for some reason. Bootleg cards on amazon are ... $50 to $70. They don't have one yet for the CX-90 but I will order one as soon as they offer one. My daughter will do the same for her CX-30 when it arrives.