We live in a pretty litigious society, especially when it comes to product liability. I figure if it was dangerous to plug a motorcycle tire with a kit that was specifically designed to plug tires (in other words, the kit was being used as intended), by now someone would have sued a tire plug manufacturer after some catastrophic accident, and there would be big warnings on tire plug kits not to use them on motorcycle tires. I haven't seen every tire plug kit, but there aren't any warnings on mine.
I'm not aware of any consumer safety reports that indicate that it's unsafe to plug a motorcycle tire. I'm not saying there isn't such a report; only that I don't know about one. Maybe someone out there on the forum knows more about that.
I wouldn't hesitate to plug the tires on my V-strom. I might have some pause about plugging the tire on a high performance bike like a GSXR, but that wouldn't be based on anything but my own unsubstantiated fear about a tire plug in a high performance bike.
As for why this forum doesn't share the opinion of the other forums about tire plugs, who knows? Maybe guys on here don't place as much faith in anecdotal evidence as they do on the other forums.
2014 Yamaha Super Tenere
2012 Suzuki DL650 (traded)
2004 HD Road King Custom (sold)
2000 Yamaha Road Star 1600 (traded)
1994 Yamaha Virago 1100 (traded)
1982 Honda V45 Sabre (traded)
1984 Kawasaki 440LTD (sold)