I've seen the charts that have been posted and have come up with 32 psi but seems extremely low and even looks like it when done. I've settled on 34 psi but noticed my MPG have noticeably dropped as well compared to stock. Those of you with the same sized tires, which PSI works best for you? Had a shop work on my car and told me my tires should be at 38 but they could just be going off the door jam sticker.