Sorry to disagree with you shakenbake but that is merely industry rationalizations for ripping us off. I base that on driving since the very early 60s and working in the rubber/tire industry in the past while working on various rubber compounds. We had synthetic rubber compounds back in the 70s where any vehicle tire WOULD LAST 100,000 miles. Dupont also came up with neoprene an extremely versatile and sturdy synthetic rubber. If they were produced you would never buy a tire on your vehicle unless you damaged it or until you reached 100,000 miles! Guess what? The formula was locked away never to see the light of day.
In the 80s I had NO problems buying 13" tires with a 70,000 mile warranty! Same for 14" and 15" tires. Same in the late 90s when I bought a set of 4 Generals, 13" tires for $60 plus tax USD with a 60,000 mile warranty! Today vehicles are coming stock with 17", 18", 19" and bigger tires with crappy soft rubber compounds that wear out in <30,000 miles!
All these 'technical justifications', better fuel economy, etc., touted by car and tire makers are basically BS obfuscations to fleece the public.