No, the firestones are motorcycle tires with all the technology from when you grandpa was a teenager spanking to a poster of Betty Grable. Seriously those firestones stopped being a thing in the early 1960s. Coker makes the repops for old crusty dudes with 40's Indians and Harleys and nutjob old school chopper douches - the hipster cafe douche is just an extension of that scene anyway.
Personally I have never seen a set that was perfectly round. And for a while they weren't speed rated past 60mph. I rode one bike with them - a 40s flathead Harley, and confidence inspiring is not a phrase I would use. The ride was soft and kinda nice but it felt squirrely in the turns and on a wet street they just felt greasy. I hear the new ones are better than the old ones but they are by no means a performance tire. They are literally built for bike shows.
I like the way the GS1000 looks. But looks don't make it go and that bike is flat dangerous to whomever is riding it, let alone riding it fast. I count no less than 10 shortcuts that make it worse than stock in quest for a look. The GS1000 was a big dick bike in the superbike era, that thing is circumcised so much it is all balls and no shaft.