I went to a 55 series tire about 6,000 mile ago and I'll never go back to a 50. There is zero downside and plenty of upside. No need to try to explain it with physics, it just works.
BTW, I pull both wheels off together all the time to take them to my dealer. I just put a floor jack under the front of the engine, and put a tool box under the forks. I don't tie it down or anything. It's not going anywhere unless you plan to do other work on it while the wheels are off (which I never do).