Thats a lot of money for the Polaris rear Slingshot tire. $169? I get mine for $180 installed at my most unfavorite dealer. They are the only game in town and have over 40+ Spyder dealerships. If the compound is softer on the Yokohama S Drives as JC Thorne pointed out it might be a consideration. The weight on each Spyder tire is + or - only 375# and anyone using a high mileage harder compound tire is looking for trouble on both wet or dry surfaces. On a 4-5000# car you have 1000-1250 pounds per tire to increase "grip". In my career and 66 years of riding and racing motorcycles I will choose safety over a high mileage, hard compound tire any day. I am certainly no tire expert but always think safety first. It's just a matter of physics after all.
Jack
Jack, I understand that you need to feel safe. And we do too. My wife first started ryding solo this past season on our '14RT. She logged about 8,000 miles. This is ryding some of the most dangerous roads in North Carolina and Tennessee (Rattler, Tail of the Dragon, etc.). In that entire 8,000 miles she never had either a front or rear wheel break loose and cause her any grief. PRIOR TO THIS SHE HAD NEVER RIDDEN SOLO BEFORE! What kind of tires do we have on the RT? Federal EVO's on the front with about 5,000 miles on them And the Michelin Hydroedge with 36,000 miles.
Prior to letting her start ryding the RT I knew the performance of these tires; either single or solo. I have road solo around corners so fast that the front tires will growl from the friction, but not loose traction. I have gotten a wheel up a foot off the ground with no slipping issues whatsoever.
I was making a quick run to a parts manufacturer in Cincinnati earlier this year in the rain and I came to a underpass in the city that had about 12" of standing water at about 45 mph. The byke hit the water and immediately started to hydroplane. I kept my cool, didn't hit the brake or try to steer out of it and the nanny kicked in, stabilized the byke, slowed it down, and I continued on my way. Regardless of what tire, it would have still done that. That is the only time that those tires have broke traction.
I am running the exact same setup on my Daytona and I noticed when i first put the Hydroedge on the rear, it would break traction pretty easily, but after 5,000 miles it has worn down enough that it bites very well on dry road. When it is wet it is a completely different story. But the Kendra that came with it was the same way. I just take care when I ryde in wet weather, knowing full well that the rear end can get a little loose. Never have I had a problem with the fronts loosing traction, wet or dry.
I guess it comes down to what makes you feel safe. My wife does not ryde in wet weather. And if she happens to get caught she takes extra care. We have another Hydroedge waiting for when she finally wears hers out. No telling when that will be.
I respect your opinion, but we'll keep doing what works for us.