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The article is for biking, mountain biking. This isn't pavement, it's dirt or sand or rocks. I run 30psi on my tubeless setup when going down, but 35-38psi going up. I'll take a little tire spin for the reduction in RR. There is a noticeable difference in effort required. The last epic trail I ran I had the tires around 32psi going down, and up high the rocks were rough, made for a very bouncy ride. I let a bit out after almost hitting the deck and a few trees, ride improved. I didn't check the exact pressure, but whatever it was the tires didn't bounce as much. When I reached the hardpack lower down (The trail was a 7300-9600-6700ft, EPIC) I pumped a few pounds back in, back to around 33psi. Handled nicely, no washboard so the higher pressure may have helped me run faster.
I don't apply mountain biking logic to driving my car. The two react and handle much too differently to be equated.
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