And tire shops never do any questionable practices, like selling questionable tires? *gasp*
Why would I trust a video on YouTube that claims to be a "scientific" "study" from a website that clearly has a bias towards siping? That video -- and the test subjects in it -- have too much human control in it for me to trust it. It's nothing more than a sales gimmick. You may think that siping helps traction on wet or snow-packed roads, but it's actually shown to increase stopping distance on dry pavement. Why would that be a good thing when a majority of our driving is on dry pavement? Tiptronic is right... why is siping illegal overseas?
One last thought for you... I hesitate to mention this because this one bothers me and I don't like sharing these stories with strangers, but maybe it will help you see where I'm coming from. I handled a collision a few months ago where four people were in a vehicle. The driver was the daughter of our insured. In the front passenger's seat was our insured, an elderly gentleman. In the back seat was our insured's wife, and sitting next to her was her grand daughter, a 6-month infant in a car seat. As they were on a highway overpass, they had a catastrophic tire failure, causing the driver to lose control and cross three lanes of traffic to the left and hit the concrete barrier. In an attempt to regain control, the driver overcorrected and crossed the same three lanes of traffic and hit the right concrete barrier. A second vehicle then rear-ended the first vehicle, ejecting the elderly gentleman in the front passengers seat and the infant in the rear. Both landed on the road beneath the overpass they were on. The infant survived, the gentleman did not. The cause of accident? The catastrophic tire failure. Not because they were bald... not because they were poorly maintained, but the highway patrol determined that the tires were "intentionally modified beyond the manufacturer's specifications."
In your first post you stated "I can't leave things alone on a Jeep not even the Tires." So you're doing this just because you can't leave things be? Sounds about right, but it's not a very good reason. It's clear that you offered this up for discussion, but won't consider the ramifications of such a practice just because people who offer differing viewpoints don't matter to you. Let us know later on down the road how your tire treads are doing after siping.