Join Date: Jul 2017
Thanked 19 Times in 14 Posts
After my experiment with Michelin Power RS over two track days I thought I might spend a little time evaluating various manufacturers' supersport offerings. To that end, the next step is to try the Dunlop Q3+. As a reminder, I felt the Power RS were excellent tires, but they went off rather drastically after less than 150 miles of track day abuse at around 80% of normal race pace. You can read about them under Michelin Power RS on this forum.
The Q3+ started the day at a disadvantage with me. The last time I ran anything that said Dunlop on it they were DOT race rubber and they were an abject failure. They stuck well until they didn't and were virtually unrecoverable once sliding. With that in mind I really didn't expect much from these tires. Bear that in mind as you read the rest of this post.
I started the day off gingerly not really knowing what to expect. I had heard several people rave about Q3+ but had no experience with them, so I thought I should find our for myself. I ran with the Beginner group first (I'm a control rider, so I ride with all three groups during SMRI track days) and immediately noticed that the Dunlops steer a little more lightly than the Michelins I just took off the bike. I hadn't loaded the front, but I liked the way it felt at a moderate pace. The rear was unremarkable, as it just did what it was supposed to do.....which is good.
As the day progressed and confidence developed I began to wick the pace up a bit. I ended up riding about 80 miles on the Q3+s and got up around 80% of race pace, which is about as hard as I go during track days. Just to see where they developed bad habits I did wick a bit more in the Expert group. Leaving turn 5 headed toward 6 (this is the fastest part of our track, and it's also off-camber to flat, so it's one of the easiest places to slide) I intentionally got ham fisted with the throttle and stepped the rear out at the top of 3rd gear shifting to 4th. The rear stepped out markedly but the slide was easy to maintain and recover, and I left the track after that session feeling very confident in the tires. I never got the front to push one little bit, though it did chatter a little at that pace leading me to believe it was very near its slide point.
All told I rate the Q3+ a 10.5 of 10....considering I gave the Power RS a 10 before....these were just a little better. I'll run them for one more track day just to see how they behave shagged, and I'll post those results here.
For reference this was a 120/70 front at 32 psi and a 180/55 rear at 30 psi per Dunlop recommendations.
Next up, Bridgestone RS-10. They're already sitting beside the tire machine in the shop. I'm curious to see how these behave, as I've raced for a year and a half now on Bridgestone slicks (because they still pay contingency) so I want to see how the RS-10s compare.
I'll try to shoot a pic of the tires after their 80 mile test and post it here later. The front looks quite well, but the rear is showing significant wear. I expect they'll probably get about the same 150 miles the Michelins did.
"Never appeal to a man's better nature. He may not have one. Invoking his self-interest gives you more leverage."
---Robert A. Heinlein