I got a new rear tire recently and thought I would pass along some things I observed about it. But first I thought I would pass along my thoughts about the previous tire. I replaced the stock dunlop rear with a Pilot Road 3. I loved the dual compound 2CT I had on another bike so i tried the Road3. I was very disappointed in the center patch wear. I practically wore it out in the middle on a trip to houston on I10. I think i got about 6K out of it. I liked how it felt in turns. It just got too smooth too quick in the middle.
I ride the back roads of texas hillcountry. No gravel on purpose, just rough chip sealed type roads that seem to wear out rubber quickly. So I went looking for a dual sport type tire like on the big adventure bikes. The shops in austin will order you anything but stock very little. Seems like a big pirelli town, not that that is a bad thing.
For what ever reason I decided to try a Metzeler Tourance Next. Like all the other adventure tires it don't come in a 150-60x17. Closest is a 150-70x17. A little taller I thought but no big deal.
The tire showed up and wow. It seemed like it was a couple of inches taller (really just 1/2) but looked tall. Also it weighs a lot. The NEXT alone seemed to weigh as much as the PR3+rim together. Seriously! THis tire is meaty. Very stiff sidewall and very thick tread. Just what I was looking for to tackle the back roads.
It mounted up great. Looks great on the bike. In fact this is where I feel like I had an epiphany. The bike looks right with the taller tire. And I'm definitely rolling faster at the same RPM. Not sure how much so I referenced this Chart
which says it might be 4% diff. So I got to thinking maybe japan engineers spec'd the bike for the 70 series tire but the production guys needed to use up more of their 60 series tires from other models.
I can definitely feel the additional unsprung weight the heavier tire adds. It makes the rear suspension feel kind of dead. Heavier thumps instead of little bumps. I think i would try to determine a tires weight the next time I'm comparing. Anyway, I'll be riding this tire for many years to come. I surely has 10 times the life of the PR3 in it by looking at the depth of the lugs.
If you ever get a chance to run the Dunlop D16 front tire
you'll love it. They say it was develop from a Superbike rain tire. I believe it too. It works everywhere.