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I don't visit this site as often as I should but this thread caught my eye as it was timely.

Have been riding for many years, about 120,000 miles as of this writing.

My experience after 30,000 miles on my 07 CBR600RR (bought new in 2008) finds the S20 to be the best tire overall for me. I do almost exclusively weekend canyon carving with the CBR and ride a VFR during the week, for commuting and after-work canyon runs. I have some of the best canyon riding in the West right by my home.

Since 2008 on the CBR, I have run 3 sets of Dunlop Qualifiers (OEM and two sets of the aftermarket version), three sets of Michelin Power 2CT, two sets of Q2's and am now on my third set of S20's.

For perspective, my suspension is stock, professionally set up, and I am considered an aggressive rider.

In retrospect the Qualifiers were never good for me, after a couple of thousand miles they would acquire a "pyramid" shape, almost concave at the sides and when they got really warm, they got a "greasy" feel. Never had one step out on me, just a poor feel overall. Kind of soured me on Dunlops for a while.

Had better results with the 2CT's, but wear was rapid and they would acquire the same "pyramid" shape over time. Very uncertain feel after a couple thousand miles.

Then the Q2. Compared to what I had run previously the Q2's were a revolution. Sharp turn-in, good line holding, good feel from the front- but they wear on the rear was fairly rapid and the front had a similar wear issue as the others. With my second set, I had the bike step out of line in slightly damp conditions numerous times, a real confidence killer.

On the positive side the Q2's had plenty of lean left in them- I never touched the last 1/4" of the rear tire edges on either set.

When I got my first set of S20's the first thing I noticed was how smoothly and easily the bike turned in (opposite of the opinion that opened this thread). Wear was totally even and the front tire felt the same through it's entire useful lifespan. Same with the second set, extremely even wear and 90% of the original profile remained on the front after 3500 miles. Never any issue in wet weather.

I do use the ENTIRE side of the rear on these- but that's because my average cornering speeds are up to 10 mph faster than with the Q2's. For instance there is a particular 25 mph (suggested, not limited) S-curve on one of the more popular canyons in my area that normally yields a 60-65 mph traverse with the Q2's. 70-75 on this same S-curve is no problem with the S20.

My second set came off today and was replaced with a fresh set. I was amazed (as was my tire tech) when we saw that the tire balanced up with precisely the same weights on the same place on the wheel. Says something about Bridgestone consistency.

I really like the S20, and I think the Q3 will have to be very good indeed for me to go back to Dunlop.
Great write up. Thanks!
 

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Discussion Starter #22
I don't visit this site as often as I should but this thread caught my eye as it was timely.

Have been riding for many years, about 120,000 miles as of this writing.

My experience after 30,000 miles on my 07 CBR600RR (bought new in 2008) finds the S20 to be the best tire overall for me. I do almost exclusively weekend canyon carving with the CBR and ride a VFR during the week, for commuting and after-work canyon runs. I have some of the best canyon riding in the West right by my home.

Since 2008 on the CBR, I have run 3 sets of Dunlop Qualifiers (OEM and two sets of the aftermarket version), three sets of Michelin Power 2CT, two sets of Q2's and am now on my third set of S20's.

For perspective, my suspension is stock, professionally set up, and I am considered an aggressive rider.

In retrospect the Qualifiers were never good for me, after a couple of thousand miles they would acquire a "pyramid" shape, almost concave at the sides and when they got really warm, they got a "greasy" feel. Never had one step out on me, just a poor feel overall. Kind of soured me on Dunlops for a while.

Had better results with the 2CT's, but wear was rapid and they would acquire the same "pyramid" shape over time. Very uncertain feel after a couple thousand miles.

Then the Q2. Compared to what I had run previously the Q2's were a revolution. Sharp turn-in, good line holding, good feel from the front- but they wear on the rear was fairly rapid and the front had a similar wear issue as the others. With my second set, I had the bike step out of line in slightly damp conditions numerous times, a real confidence killer.

On the positive side the Q2's had plenty of lean left in them- I never touched the last 1/4" of the rear tire edges on either set.

When I got my first set of S20's the first thing I noticed was how smoothly and easily the bike turned in (opposite of the opinion that opened this thread). Wear was totally even and the front tire felt the same through it's entire useful lifespan. Same with the second set, extremely even wear and 90% of the original profile remained on the front after 3500 miles. Never any issue in wet weather.

I do use the ENTIRE side of the rear on these- but that's because my average cornering speeds are up to 10 mph faster than with the Q2's. For instance there is a particular 25 mph (suggested, not limited) S-curve on one of the more popular canyons in my area that normally yields a 60-65 mph traverse with the Q2's. 70-75 on this same S-curve is no problem with the S20.

My second set came off today and was replaced with a fresh set. I was amazed (as was my tire tech) when we saw that the tire balanced up with precisely the same weights on the same place on the wheel. Says something about Bridgestone consistency.

I really like the S20, and I think the Q3 will have to be very good indeed for me to go back to Dunlop.
I'm glad to see the turn in is an issue with my setup looks like and not the tire. That was one of my biggest peeves with this tire.

Sent from Motorcycle.com Free App
 

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Did a trackday in Fernley this past saturday. My S20 front was rock solid.



I was really impressed. It didn't squirm around at all, no pushing, held it's line etc. I was also able to trail brake pretty deep into a hairpin after a short straight.

My BT023 did great as well AFTER I set the correct PSI which worked out to be like 27/25 cold.

 

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really don't care for Q2's. The feel sucks, trail braking wants to stand straight up, I maybe got 1,500 miles from the rear and never do I feel a whole lot of confidence in them. I have an Ohlins on the rear and full racetech front end all setup precisely for me. I'm kinda shocked everyone seems to think they're great. then again I'm really partial to race take-offs. lol
 

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Did a trackday in Fernley this past saturday. My S20 front was rock solid.



I was really impressed. It didn't squirm around at all, no pushing, held it's line etc. I was also able to trail brake pretty deep into a hairpin after a short straight.

My BT023 did great as well AFTER I set the correct PSI which worked out to be like 27/25 cold.

This is the issue im having as well. I mean they are solid all day in rain,cold, hot, but im using all the tire to the edge. I know my Body postion is on point, as confirmed by video, pictures, and NESBA CRs. Im thinking the tires profile maybe the culprit. Anyone running this tire in high I group or low A group? Thinking of going with the Q3 just for the more pointy profile, more so for more tire edge. Its a shame, because i have ran quite a few sets of the S20s, and i love them. They may only be good up to a certain level.
 

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This is the issue im having as well. I mean they are solid all day in rain,cold, hot, but im using all the tire to the edge. I know my Body postion is on point, as confirmed by video, pictures, and NESBA CRs. Im thinking the tires profile maybe the culprit. Anyone running this tire in high I group or low A group? Thinking of going with the Q3 just for the more pointy profile, more so for more tire edge. Its a shame, because i have ran quite a few sets of the S20s, and i love them. They may only be good up to a certain level.
I would expect to use a front tire to the edge under trail braking.

My BT016 was very peaky when new and I used it to the edge on the street.

The S20 on the street still has a 1/4 inch strip after a spirited ride.
 

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i know this is a bridgestone thread and people seem to like the q3's but seriously try the supercorsa sp's they have a v2.
 

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i know this is a bridgestone thread and people seem to like the q3's but seriously try the supercorsa sp's they have a v2.
That's a race tire isn't it? We're talking about sport tires, big difference.

Looks like a front supercorsa sp v2 cost about double what I paid for my S20 front.
 

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That's a race tire isn't it? We're talking about sport tires, big difference.

Looks like a front supercorsa sp v2 cost about double what I paid for my S20 front.
its a street tire but its got the same profile as the pirelli race tires. i think its the closest you can get to a race tire without just going DOT. it is pricey but imo the best street track worthy tire out there right now. if you want a fast I or A pace street tire then try it out.

one review:
Pirelli Diablo Supercorsa SP Tire Comparison Review - Motorcycle USA
 

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That's a race tire isn't it? We're talking about sport tires, big difference.

Looks like a front supercorsa sp v2 cost about double what I paid for my S20 front.
Another reason why i like the S20. $220 for a set most times are hard to beat.

Also, can you expand on why the edge would be used up on trail? I just started playing with trailing in, would it be because you increase contact patch on lean with the brakes? I guess that would use the edge without increasing lean angle.
 

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Another reason why i like the S20. $220 for a set most times are hard to beat.

Also, can you expand on why the edge would be used up on trail? I just started playing with trailing in, would it be because you increase contact patch on lean with the brakes? I guess that would use the edge without increasing lean angle.
In my experience, the less? rake you have the more you use the contact patch of the front tire.

I started playing with rear ride height last season and noticed the more pitched forward the bike was, the more I used the front tire.
 

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Discussion Starter #32
In my experience, the less? rake you have the more you use the contact patch of the front tire.

I started playing with rear ride height last season and noticed the more pitched forward the bike was, the more I used the front tire.
http://sportbike.natkd.com/motorcycle_geometry_101.htm


A good read about geometry.

My bike is raised 6.5 mm in the front, with a 5 mhm shim at the rear shock mount ( translates to +13mm? I think rear ride height)
 

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I have stock geometry, except for sag, some hydraulic changes. So bottom line, you dont believe the profile to be the reason im running to the edge? I mean im maybe mid pack I pace, and i have a sliver left on the front and rear.
 

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I have stock geometry, except for sag, some hydraulic changes. So bottom line, you dont believe the profile to be the reason im running to the edge? I mean im maybe mid pack I pace, and i have a sliver left on the front and rear.
Not sure honestly. I generally get to the edge of my rear first. I won't start getting to the edge of the F unless I'm trail braking.
 
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