IMO, 19" wheels are the perfect size for the HRV and 245/45/19 tires are perfect for stock height. I have 245/40/19 and will be lowering it a bit soon.i usually see guys here running with 18" wheels. would like to see one with 19's. here's what i found from google when I searched for HRV with 245/45/19 tires
This is it on 245/40/19 at stock height.
This is what I hope it looks like after lowering it.