I'm sure some will oblige with their preferences pocono, but it seems to me that you are over-thinking this.
First up, don't restrict your search here
only to tires that fit F3's - if an alternative/non OEM tire fits an RT, it's a pretty certain thing that it'll fit on an F3 too.
That said, there's also not a massive change rate in tire brands, types, &/or sizes that fit our Spyders (any Spyders that is, F3's, RT's, even RS's & ST's, at least all those since the early GS/RS Spyders that ran 14" front rims & different brakes - not the current Brembos) so there's no significant changes in the tire recommendations that work well, except for the occasional addition of upgraded/latest version of those tires like the Vredestein Quatrac's & the latest Michelin Cross Climate 2 upgrades Mike mentioned above. So those 'few years old' threads & their recommendations are still just as valid today as they were when they were posted a few years ago, even if there are a couple of tire brands/types that have since superseded earlier versions with more recent types of the same tire! :thumbup:
So it really doesn't matter if the tire thread you're reading is a few years old or if it's for an RT, an RSS, an ST, or an F3 - just so long as it's talking about tires for 15" rims and it's NOT talking about tires for a Ryker, then the recommendations there-in are still valid; and even if that thread
is a few years old, new tires of the same brand/type or the latest version of those tires should work for you, and do it very well too - just so long as you run them at the right (lower) pressures for the light load the Spyder imposes on a tire that's capable of carrying so much more weight when it's fitted to a car!

hyea: