There's been many questions on tyres, many responses, some helpful, some not so. Even some diametrically opposed to others. Which answer is correct or not? Probably both, as it depends so much on personal prespective, wants and needs.
Overall we're a small group on OzSTOC, particularly those that participate in the Forum, few will respond, even less will be close to your weight and have a similar riding style.
Having said that, my thoughts.
Weight: Since having the ST1300, been as low as 85kg, as high as 95kg. But to me that's not all that relevant as when touring, I've probably had an additional 30kg plus in luggage, and at times a pillion at around 60kg.
Riding style: Yeah, some spirited riding at times, have got a fright scraping the pegs, or a kidney punch from the pillion a coupla times (after a peg scrape). But approaching my mid-70's, those days are in there rear view mirrors.
Wear / cost: This was a concern, replacing tyres every year or so at around $550 was annoying, but now every two years seems to be the norm. These days I don't care, especially as it's all relative - a mate replaced his new tyres on his Hyabusha after a 2500km Alpine tour back in 2022. I think we're lucky.
Back in 2013, my ST13 came new with OEM Bridgestones, these didn't last 10,000km. Since then, Michelin PR3GT, Shinko (after a recommendation, cheap but never, ever again - no redeeming features), then PR3GT, PR4GT, PR5GT, only departure was a Dunlop Roadsmart (only tyre available at Bairnsdale at the time, less than 8000km).
Next tyres? Michelin don't do Pilot Road GT in sizes for the ST13 anymore, so based on from what I recall of previous posts, I think I'd be going for a Pirelli Angel GT.