Already have a set of Michelin city grips Ho Ho brought early for my sore hiney

These old Showa's off GoldWings will last, any wrench know if they are compatible? PCX's are like 6 Inches in diameter.
Rode for 47 years, I have kept it pegged & avg 81 MPG, but only 322 miles on it. It keeps me at limit (55mph) even in the river valley, I am shocked and feel like I am 8 on my 1969 Honda QA50, grin ear to ear lol. These SL70 forks I can deal with but the rear ink pen springs gotta go lol.