Yeah, I noticed that, I checked my tire pressure just for the heck o it about 2 weeks ago and they were all over the place, 12.5 in the rear right, 38 in the left rear, 35 in the front right and 22 in te front left. WOW I couldn't even tell until I filled them all back up to 40 and the car cornered 5 times better. It's been holding since so I don't knowhow long they have been there for. No difference in wheel pull tho. Interesting...I thought so