Knowing actual angle it touches won’t help anything unless you have angle-gauge on dash to monitor while you’re riding. Just take it easy and gradually increase angle with each corner. Your ears will tell you what angle it’ll rub.
Heck, even on raised bike, side-stand bracket touches down on track. I just cut whole thing off frame.
Bike was designed for 87-oct petrol and using higher won’t change anything. In some cases, you’ll actually lose power. Unless you actually modded engine to take advantage of higher-octane fuel such as installing big-bore 13,5:1 high-comp pistons or boost.
Dyno -
Octane vs. Horsepower - Separating fact from myth in the debate over which fuel makes more power - NASA Speed News Magazine (some misinformation, but good dyno-testing shows higher-octane reduces power)
Dyno -
Fuel Rating - Octane Comparison - Dyno Tests Graphs - Hot Rod Magazine (2% increase required 114-octane, and also needs adjusting ignition-timing. No one's butt is going to notice 2% difference, but your wallet will notice 400% increase in fuel-cost).