I feel that it should be a requirement for safety sake's,that all passenger cars come with spare tire. people waiting 2-3 hours alongside the road in the dark to get a tire replacement presents a safety issue for them and other motorist. with a spare tire ,they would be out of harms way in minutes not hours..
All four tires on my car were set to 50psi when the recommended tire pressure based on the sticker on the door was supposed to be 36psi my understanding is that it done while the vehicle is parked on the dealers lot so the tires won't deform. dealer failed to adjust to proper pressure.