Well, I've logged ~1,900 miles on my new Michelin PR3 tires and thought I would share my observations thus far. First, a little backgroud on why I decided to try a "sport touring tire" on a bike that came factory equipped with a "sport" tire. My 11' N1K came from the factory with Bridgestone BattleAx BT-016 tires. These tires performed well, provided excellent grip irrespective of temperature, reasonable warm up times and very decent mileage. I got 4,618 miles out of the factory tires with very spirited street riding (no track days). In all honesty, I could have probably squeezed another 500 miles out of them, but was keen to try another tire. The second set of tires I had on the bike were Dunlop Sport Max Q2s. When purchasing these tires I went to a 55 series in the rear, so it's not an apples to apples comparison with the stock rubber. The Dunlop Tires were superb in terms of grip and insipring confidence in riding. The tires warm up very fast, had very linear turn in, and really helped me improve my riding. I felt like I could take any corner with confidence, and never second guess the tires. I put exactly 3,106 miles on the Q2s and they were worn out. They weren't down to the cords, but measured tread depth of the rear tire (using my Mitutoyo digital dial calipers) was 1.3mm. I actually ended up low-siding my bike on my last ride on the Q2s. I think the root cause for my mishap was due to a number of factors. I had just fueled up a couple miles before I went down. I think I might have gotten some diesel fuel on the tires while at the filing station. It was also very cold out the morning I went down (low 40s). Lastly, I went down in a turn that I'm very familar with (slightly sharper than 90 degrees) which happened to have a painted crosswalk at the start of the turn. In hindsight, I was over confident and the conditions were poor. Lesson learned. Enter the Michelin PR3s...
So after my experience with the above tires combined with my mishap, I thought it would be wise to try a sport touring tire. My expectations for the PR3's were/are:
- Increased tread life
- Improvided traction in wet conditions
- Near sport tire grip
The PR3s have shown very little signs of wear in almost 2,000 miles. There are no unusual wear marks, no balling up of the rubber, they literally look almost brand new. I have been running stock pressure (36f/42r) and have experimented with pressures as low as 32f/38r and everything in between. I have not yet had the occassion to get caught in the rain with these tires, but I have ridden over wet pavement in canopied sections of some of the roads I ride during early morning outings. These tires have never given me any indication that they wouldn't provide good traction on wet roads.
I live just North of Atlanta and we have been experiencing some of the hottest days on record this summer. I have spent a lot of time riding in 95+ degree heat and a few days with temperatures as high as 106. Here's where I've been a little dissapointed with the PR3s. When riding aggressively in these conditions I've noticed on a number of occassions that the PR3s will "walk" once you get over on the tire about 1/2"-3/4" off the very edge. Up until that point the tires are very linear and predictable. A lot of the roads I ride on (Hwy 60, Hwy 180, etc...) have lots of tar snakes on both the straights and the turns. When I pick my line for a turn I often find I've moved over as much as a foot or more from where I thought I should have been due to the tires sliding. This has caused me to have much less confidence in the PR3 as compared to the previous two set of sport tires.
I realize that comparing the PR3s to a sport tire is an unfair comparison, but honestly I expected a little more from these tires. The pluses of these tires are what appears to be exceptional tread wear, very decent traction and they are super quiet. The downside in my experience is that they don't hold the pavement in hot weather nearly as well as a sport tire.
These tires are also pretty pricey. I think if you're someone that likes to take the twisties at a moderate pace and want a tire that will perform well in a variety of weather and provide good tread life then these tires are for you. If on the other hand you're one that likes to push the bike closer to its limits you might want to stay with a sport tire.
Personally I'm not sure if I would buy these tires again. This review is not intended to be a knock against Michelin or these tires in particular. I've owned many a Michelin tire over the years on a variety of vehicles and have always been very happy with them. I think this is more a case of a sport touring tire not stacking up to a sport tire.
HTH....
P.S. I found the following article and it seems to match up pretty well with my experience...
Michelin Pilot Road 3 road test review | Motorcycle Safety News


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