I have just checked my tyre pressures on the 18" wheels, they should be 33psi at the front and 30psi at the rear according to the sticker inside the drivers door (still no handbook!), they were all 39psi. I did not get a PDI checklist with the car, but clearly not checked by the dealer.
In spite of that I have found the ride to be very good, hopefully better with the correct pressures. My only gripe so far is that the seats are hard and in spite of the many adjustments to position, height, lumbar support, steering wheel, etc I have yet to find the perfect driving position. Perhaps I was spoilt in terms of comfort with leather seats in my previous 2015 Mazda CX3. That had a hard ride on 18" tyres, although I'm told the current model is better.
In spite of that I have found the ride to be very good, hopefully better with the correct pressures. My only gripe so far is that the seats are hard and in spite of the many adjustments to position, height, lumbar support, steering wheel, etc I have yet to find the perfect driving position. Perhaps I was spoilt in terms of comfort with leather seats in my previous 2015 Mazda CX3. That had a hard ride on 18" tyres, although I'm told the current model is better.