YouTube - Lifting the bike on swing arm rear stand, and applying ProGrip wheel tape
progrip pinstripe with applicator. it starts to be interesting @ 5:28
just in case you don't want to make the applicator yourself lol
I've got the 46L as well. It's rock steady just don't put really heavy stuff in it. My GPS showed I traveled at 189 kmh with the top case on, no problems.