no it is not. The factor is...if you have two different brand of tires, even if the size is the same, the width of the contect patch may not be the same. So different tires can take different tire pressure. On mine ( Potenza RE730 205-55-15 ), after I put them on and set pressure to factory, I found that ride was "sloppy" until I set them to 40/35 ( I set the front 5psi higher than the back to get better balance on high speed turning ) I use this set-up for 15000 miles now and tires worn pretty evenly. And I am happy enough with this set-up and consider about not upgrade my wheels to 17 for the ride issue.
Is Shiner Bock the best beer in North America? How come I never heard of it?