It's all about moneeeeyyyyy!!!!
The sooner you figure that out, the better off you'll be!
Car industry is tire industry and oil industry related. They are all budy-budy.
The lower the tire pressure you have on your vehicle, as per car manufacturer recommendations (KEY WORD - recommendations), the more often you need to change the tires, the more gas you are going to use.
A tire inflated at the lowest scale, even if the vehicle has crappy suspension, it gives people a more "comfortable" ride, thus the perception of "quality".
The higher the quality perception, the higher the sale volume.
Tires wear out faster - tire companies make more money
Use more gas - oil companies make more money
There are not any reports in the car history confirming that a perfectly good tire, used at the proper loading capacity, at the speed and type of road was designed for a tire "exploded" due to 10-15 PSI over the manufacturer recommendations.
Yet there are thousands of reports of blow-out tires using manufacturer's recommendations or below manufacturer's recommendations.
I have yet to see a bold tire right in the middle as per some people suggestions that an overinflated tire wears in the middle.
Does any of the people, condemning the practice of going for the side wall max PSI or over, have pictures of those bold tires in the middle?
I'll show you my tires that I am using 10 PSI over the maximum rated (41 PSI)
on my ride.
They don't look anything like the tire shop told you. Do they?
Another thing, some people claim that with an over inflated tire they experienced lose of traction and poor handling. Let me tell you this.. .. this is an physical impossibility. (providing everything else is in the perfect working order on the vehicle)
"The Roadie" says, and i totally agree with him: "This conversation must focus on the vehicles and tires, not the assumed skills, background, or motivations of the posters."
Would the following verifiable background count?
=== Sgt. Dave Storton ===
Is the Director of the San Jose Police Academy, and he holds a Master's Degree in Adult Education. He is the lead instructor for the Emergency Vehicle Operations Course (EVOC) at the San Jose Police Academy, and is a lead instructor for the local regional academy. He teaches EVOC instructor courses, advanced EVOC instructor courses, off road EVOC, counter-terrorist / dignitary protection driving, and motion picture stunt driving. Dave has trained over 3,500 drivers.
How about this?
=== Bobby Ore ===
A veteran stunt driver Ore, traveled the world for 25 years teaching military, FBI, CIA and Secret Service agents to drive in extreme circumstances.
He holds 13 automotive world records, including one for driving a London double-decker bus on two wheels for 810 feet.
Do those people's skill and authority counts?
Well both of them are advocating 5-10 PSI over the Max PSI on the tire's wall.