My experience with tires....
Are you satisfied with the Kumho car tire? Any regrets? Thanks for your time and opinion.:f_spider::f_spider:
I've went through 2 rear tire changes and 1 front tire change and have approx. 26,000 miles on our 2014 RT Limited. As we all know, the factory rear OEM tire didn't last at all and it was changed out around 8,000 miles (I should have changed it at 6,000 miles as it was a "slick" when it was changed).
Decided on the Kumho tire for the rear and it lasted approx. 14,000 miles - good! It performed well and I like it. However, many Spyderlovers went to the General Altimax on the rear, so that's what I have now and it's also performing fine.
I changed my front OEM tires to the Kumho Solus and it took me awhile to get used to those tires. I have a BajaRon Swaybar and shock adjusters and can really hug the cornering. I noticed the front Kumho Solus (when new) seems to not grab as well and the bike would push them and lose a little traction. I'm use to them now, but it was scary as the OEM did a great job of gribbing in corners for me. I may look at another option next time when changing the fronts. The OEM tires on the front performed well in my opinion and had no cupping issues at all.
Kumho Ecsta AST 225/50R15 Rear Tire (Aug 2014, 7,931)
Fronts = Kumho Solus kh16 155/60R-15 (Aug 2015, 21,913)
Rear = General Altimax RT43 215/60R-15 (Aug 2015, 21,913)
BTW: I utilize Ride-On in all the tires on the Spyder and I think it's fine. NO issues...never tested it yet to see if it seals a puncture.

Tires, oil, etc. all have a lot of info in this forum....good luck with your choice of tires as your go forward! :thumbup::thumbup: