At 16k miles on the Goodyear RSAs, I find that just 2 or 3 pounds over the 33 recommended pressure has a big difference in the ride of the car. More harsh, less supple over the bumps and ruts. I don't recall that when the tires were newer. I'd keep the pressure at 34-35 , the ride was good. Now suddenly I feel the difference. I guess it's the tires. Had the same tires on a 1998 Pontiac Grand Prix. With a little "age", the ride deteriorated alot. Thought it was the cars springs and/or struts. You guys see the same?

 

i think he meant hydrogen, but even that wouldn't be very dangerous. the hindenburg went up so fast because of the surface coating of iron oxide and aluminum paint.