I ran the q3+ on track and my TC light was going crazy! Lots of slip. Hopefully the Q4 has better traction.
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2020 BMW S1000RR M (Street)
2013 BMW HP4 #2710 (Street)
2013 BMW S1000RR (Track)
2013 Suzuki DRZ400SM (Everything)
2013 BMW HP4 #0162 (STOLEN JUNE 17, 2014!!!)
2019 F150 SCREW LARIAT
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Yes, I've ran Q3's on mid-size track bikes, and wouldn't have traded them for anything. I was mainly curious about how the Q4's will handle the power and acceleration of the SKR/HP4 from actual track riders here; if Ken's assessment about flex is right on, that could be good or maybe not so good for our bikes.
I've been running the Q4 on the street for the last month. I will note they have a much lower profile than my beloved power rs tires. I have 0 chicken strips left whereas on the michelins I'd have a solid half inch. They seem pretty sticky but to be honest that the only selling point. They don't seem to get SUPER hot on the street, but get just about hot enough for spirited riding. They are definitely a track day tire. Long story short for street work I probably won't be getting another set. I'm not going to run them at the track because I'm at the point where slicks are needed.
TL: DR - Old school profile tire with new tech to make it sticky.
IMO - I like the new school of tire with a much taller profile IE Michelin power evo slick or rs. They seem to be designed for the hella lean angle people want to run these days.
They are quite different from the Q3+ in my opinion. Picking them up they feel very different.
Feel: Plush but not too squishy. Great balance between Dunlop and Pirelli characteristics.
Life: Front, plenty of life. Rear, 20% less than a Q3+ but 20% better grip.
Warming: Very fast.
Confidence inspiring: About as good as I have ever had for a street tire. Not as good a slicks off warmers of course but close.
Slides: At the track I rode it was smooth and slightly progressive with warning. Not sudden. No "chatter slide".
If you're a CSS student you can get from our office. $320/set includes shipping. +tax if in Ca. All sizes. Revzilla carries them too. They charge different prices for different sizes.
I would recommend this tire to the following:
Sport riders who mostly ride canyons/country roads.
Riders who want a track tire that also works well on the street.
Trackday riders who don't want to hassle with warmers.
Trackday riders who do trackdays in cold weather and have warmers.
I would not recommend for daily commuting in mixed riding conditions. They work in the wet but for those who end up commuting in the wet should use a silica based tire.