Honda CBR 600RR Forum banner
Cancel
Create thread New Forums

Bridgestone S21?

Jump to Latest
28K views 34 replies 13 participants last post by  Buckley.S  
#1 ·
So I'm almost up for new tires. I'm coming from the Bridgestone S20 EVOs. However, I just realized that I could order a set of the new S21 tires. Does anyone have any experience with these tires? I was gonna get a set of Q3s because I haven't tried those tires out yet. Yeah I know I'm late but I'm still relatively new to sport riding. I would like to try out all the different hypersport tires to see which ones I like the best. If the S21s are anything like the S20 EVOs then I'll probably pass them up for now and try out the super popular Q3s. I really enjoy the S20 EVOs. The grip is great, I get good feedback (I feel when I'm on the edge), and they're lasting longer than I would've expected.

I got my S20 EVOs in late November of last year. Unfortunately, I haven't done any track days with them, however, have done extensive amount of canyon carving with them here in SoCal (Palomar Mountain, Montezuma, Banner Grade). Right now I have just over 5k miles on my set of S20 EVOs and probably 25% more tread left until I absolutely need to replace them. They've already developed a flat spot since I 'used' to commute with them on a daily basis. I set the tire pressures accordingly to the way I ride. I originally bought the S20 EVOs because supposedly I heard that they last a little longer than the Q3s do. Since I'm not commuting on a daily basis at the moment, I don't mind having a tire that's softer. So that's what lead me to want to try out the Q3s.

Anyways, I'm just really curious to what the S21s will have to offer if anyone here has already jumped the gun on them.
 
#2 ·
BUY THEM!
Nothing On the Market Even Comes Close To Their Compound! And Your EVO's Are Overdue For Replcement!

The S21's Replace the S20's And the S20R-EVO's!

I Didn't Like the S20's Because Bridgestone Took Away the Triple Layer Compound Rear!
And Reduced the Dual Compound Front Softness! Which Is Why It Was Put Back In the EVO's!

The S21 Has Praises From Testing In West And Eastern Europe! Ran Hard Testing In Spain's Technical Track Facility!

Bridgestone Used MotoGP Telemetry Data:
Traction Control! Launch Control! Wheelie Control! Quick Shifts! Lean Angles! G-Forces! Longitudinal & Lateral Axis Data Acquisition! And, Auto-Calibrations!

Front And Rear Tires Diagnostics Data:
Tire Pressures! Temperature Hold Rates! Contact Patch! Surface Wear! Rapid Braking! Acceleration Forces & Mass!
Sidewall Defection/Cornering/Lateral Forceshttps://en.wikipedia.org/wiki/Cornering_force ! And On!...

Bridgestone Designed The S21 At Their New U-EYE Facility!
http://www.tyrepress.com/2015/11/new-bridgestone-motorcycle-hypersport-tyre-blends-old-and-new/
It's A 360-degree Infrared & Lazer-Scanning Rotational Bench System!
The Rotational Bench Has Motion-Sensors Embedded Inside And Are Viewed By the Infrared Cameras & Lazer Scanners!

I Was Lucky To Be In Milan In November Last Year! And Went To the EICMA Bike Show!
Saw the BIG Presentation of the S21 by Bridgeston! Purchased My S21 Tires From Chaparral!
You Won't Be Disappointed!...
 
#3 ·
sounds like you'd be fine with some Sport Touring tires, Maybe even a Sport Touring Rear, and a Sport front. You wont ever fully use the supersport tires for canyon carving.
 
  • Like
Reactions: Urbane
Save
Reply Quote Like Like
#4 ·
Thank you for your opinion, but I'm going to stick with hypersport tires because I prefer grip performance over longevity any day. I've used sport touring tires on my last bike and I can tell you that I won't be going back to them unless I ONLY commute with them and putt around on easy going roads.
 
#8 · (Edited)
I Have No Idea What "jawsolsen333" Is Talking About! The S21's Aren't Touring Tires???
They're Super Hypersport Tires!
BATTLAX HYPERSPORT S21 | Motorcycle Tires | Bridgestone Corporation

I Gave That Specific Info Because I Was At the Show! And Bridgestones RULE! Dunlop Q's! Are Garbage!
A Lot Of Hype! And A WHOLE Lot of Fail!!!
Bridgestones NEW 2-Billion Dollar Facility Uses the Most Advanced Tire/Rubber Development Technology, That NASA Contracted Them For Use of Their Rubber Compound Technology For Gaskets/Seals!

"ch33zecake" Go With Your Gut-Instinct! YOU Know What's Best For YOU!
Just Hope My Bit of Info Helped YOU Choose What's Best For YOU! And Gets YOU Home Safe & Secure! :)

And As For the Canyons, Who Cares?!!! YOU Don't Gauge Any Tires Success To The West Coast Canyon Riders! I Don't Recall Ever Hearing That Tire Companies Need A Canyon Certification For Riders Use! Right?!!!

MotoGP Riders Didn't Want Bridgestone To Leave! That's Good Enough For Me! ON ROAD | Products | Motorcycle Tires | Bridgestone Corporation

PS: You Want Track Day Tires, RS10's! Even Getting BT-003's For $150 Set Is Good Enough!
BATTLAX RACING STREET RS10 | Motorcycle Tires | Bridgestone Corporation
BATTLAX RACING R10 | Products | Motorcycle Tires | Bridgestone Corporation
BATTLAX RACING STREET RS10 TYPE-R | Motorcycle Tires | Bridgestone Corporation

Also, While In Dayton Beach For Its 75th Anniversary For Bike Week Since March 4th, Keeping Up With ALL the NEW Releases of Gear! Bikes! Tires! And the Latest NEWS For MotoGP! And World Superbike,
Bridgestone's S21 Continues To Kick ASS!
A Lot of Former Champion Racers Are Here! Awesome 1st Hand Info From Manufacturers!
Race Teams! AMA! And So On!...

And the TOP "3" Rated Tires Are As Fallows; #1: Bridgestone! #2: Pirelli! And #3: Metzeler!
Since Pirelli & Metzeler Are the Same Company! No Surprise There!

Stay Safe Guys! May Your Final Choice In Tires, Not Be Your Final Choice In Life!
 
T
#9 ·
RJ = PR man for Bridgestone?

No need to push a good product.?

I like the Bt-series tires...have bought danm close to 20 of the things.

16, 16S,20's ......Tried Q3"s.......happy to return to B.

B faster than D.

PS.....please don't trash talk canyon riders, the fast guys ride Bt R10s around here.......me S 20 more than enough.

PPS ...Please, send me a 1f/2r set of the new S-21's to try?....120/180 please?
 
#10 ·
Never "tary preisser"! ;-)

When On the West Coast, I Ride My Gass Off In dem Hills! :)

Little West Coast Trivia:
A California State Senator Was Responsible For Banning Bikes With GP-Shift In the 1970's!
From There On, ALL Motorcycles Imported To the US-Market Had The Nonstandard Shift!
Down-1. Up-5.

Next West Coast A$$-Dickory Legal Action, Was Over Race Tires-SLICKS!
As A Result of This NEW Law, Slicks Were Banned From Public Road Use!
Your Lost Your Bike! Suspended License! And Jail!
Hence, The RACE DOT TIRE!...

ALL of This From Canyon Riders! Running Up In dem Hills! ;-)

Send-PM "tary preisser"! For Price On Bridgestone S21's!
 
#12 · (Edited)
Just Received Bridgestone S21 YouTube Vid From Trevor Hedge Posted 36-Hours Ago!

Checkout the Pancaking Affect At 1:08 Through 1:18!
Notice the Front Tire Flattened Strip Is 3-4 Inches Long! And the Rear 4-5 Inches Long!
That's the BT16-Compound With the R10EVO-Caucus!

And Watch Beginning From 6:50 To 7:25 Close Up Video of the Front & Rear Tires!
L@@K At the Crown of the Front & Rear Tires Leaned Over Through the Turns!
And As the Bike Is Flicked Over From Left To Right!

And Those of You With CBR900RR's, They Come In the 130/70-16.
 

Attachments

#13 ·
Just spent the day on the track on a brand new set. I have to say the S21's are fanfuckintastic.

Very low track temps today so had some grip issues in the morning but everyone was taking it easy - i.e. it wasn't the tyre at fault. I could feel the profile though and they are very precise handling. Not too quick, not too slow.

Once there was some heat in the track I got to give them a better test. More grip than the Pilot Power 3 and better handling. I couldn't get the rear to side in places other tyres usually warn me. No sign of the PP3 squirm. No idea how much more I can push them yet.

The front is communicative without being distracting. I really like it but everyone has their own taste.

Out on the full track tomorrow with warmer temps expected so will update again.
 
#15 ·
Quick update as promised.

As the temps went up the second day things just got better and better.

I was really pushing the rear out of a couple of corners that I normally get some spin from the PP3. The S21 just ate it up. One corner I'm using full throttle for the first time ever because the tyre can take it.

At the front end I was trailing more brake and entry speed. Never had even a hint they were going to let go.

Pressures were 30 front and 29 rear (cold). By the end of the day I probably should have added a pound on the rear.

After 2 days on track the rear wear is pretty good too. 0.5mm on the left and less on the right.



Time will tell how they hold up with commuting mileage but I think they'll do ok.
 
#16 ·
discotex said:
Quick update as promised.

As the temps went up the second day things just got better and better.

I was really pushing the rear out of a couple of corners that I normally get some spin from the PP3. The S21 just ate it up. One corner I'm using full throttle for the first time ever because the tyre can take it.

At the front end I was trailing more brake and entry speed. Never had even a hint they were going to let go.

Pressures were 30 front and 29 rear (cold). By the end of the day I probably should have added a pound on the rear.

After 2 days on track the rear wear is pretty good too. 0.5mm on the left and less on the right.

View attachment 174457

View attachment 174449

Time will tell how they hold up with commuting mileage but I think they'll do ok.
Click to expand...
Thanks for the update! Have you also used the S20 EVOs or the Q3 tires before? I've used the S20 EVOs before and curious to know if the S20 EVOs or the Q3 feel similar to these S21s. I've never used the PP3s before. Glad to know the S21 can throttle hard out of corners. I would throttle hard out of corners on the S20 EVOs and get a happy rear tire. It felt so sketchy. I do that with the Q3s and grips amazingly well. I'm also curious to know the longevity of these tires. You're supposed to get like 30% more which is pretty damn awesome especially hearing you talk about how well they perform on the track! Were those also the recommended track tire pressures from the manufacture or rider preference?
 
R
#19 · (Edited)
I'm a new track rider, but I had the S21's out at Thunderhill East and they felt amazing. I haven't compared to Q3's or S20's either, but the difference between this and the stock tire was night and day, which really isn't too much of a surprise. I started the day at 32F/30R, and found the front tire wasn't heating up enough and the rear was getting too hot (I worked with the tire guys at the track..... still learning wear patterns and suspension setup as well). A few adjustments later and I finished 30F/31R and wear patterns were much more consistent. I commute on them as well and they seem to be holding up well. Still plenty of tread left, and they feel great!

Image

Image
 
#25 · (Edited)
I live out here in the desert of NM, and was on S20s yesterday; I have a set of S21s that will replace them.

Yesterday, I rode for about 5 hours up in the mountains and canyons with 90 degree ambient temps. When I pulled over for a break after 2 hours or so, I felt the rear tire and it was fairly hot to the touch. I have no idea how hot exactly, but reading this thread got me thinking about issues of late with spinning the rear on corner exit. I thought that I may have needed a bit more compression in the rear, but it could be me riding in 100+ degree weather and the tires getting too warm...
 
R
#27 ·
Update on my set: I've got about 2000 miles on my first set, including 2 track days, canyon riding, and plenty of commuting. Sides are pretty worn down from the track, but the center isn't flat and theres still tread left. These tires are continue to feel great and confidence inspiring.

I threw on a fresh set yesterday for my track day next weekend, and ambient temps are supposed to get into the 105F-110F range. I'll play with the pressures and see how they look by the end of the day! This track is a bit tighter and more technical than the last one, so we'll see how they handle. I'm thinking after this set is cooked I'll try some Q3's and can write up a comparison
 
T
#29 · (Edited)
All the Bt -016 thru s20 worked best at 34/34 warm.

(same with dunlop Q3's)

watch out as you drop psi, wear increases on center of tire IF you accelerate briskly

on street, I don't go lower......if you ride hard, and hit bumps or holes or paving changes, you will dent wheels.....after 20 k miles I had a rear out of round on all 3 axes....

(I was playing around and running 28psi rear when that happened)

I have some unsmooth rural roads around here ...and very coarse aggregate pavement.

I get about 2.5K miles/rear tire.

Love Bridgestone's tires!

They work well with this moto, and have excellent front and rear feel.

Ps...Bridgestone =(about) 18 rears and 8 fronts so far.....$3500 + in tires, model year 09 and 50K miles
 
#30 ·
Oh, I'm well aware of the implications with dropping pressures on the street. I would only do it on a nicely paved road so that I don't worry about bending the wheels.

I will also say that I like these S20's much better than the Q3's I had previously. To me, they feel better and more predictable, not to mention I seem to be getting many more miles on the S20's as opposed to the Q3's....many more. I have probably 2300 miles on my set at the moment and the rear is just barely starting to flatten down the center. At this point in mileage with the Q3's they were getting close to needing replacement by my standards. I'm willing to bet I can get 3K at least on this S20 rear and I don't ride on the best pavement for the most part of my riding.

I'm a Bridgestone loyalist from now on for street tires...
 
#32 ·
I've yet to try the S21's, but for those that haven't tried the Q3's yet, they are brilliant. Used those on my GSXR1000, and on a mate's GSXR750L2, and they've probably been the nicest allrounder so far for road and track.

I've had the 016's, 016 Pro's and S20's and, although nice enough, never seemed to give me that "feel" needed to really push (it's probably all in my head). The Q3's just sort of worked. So much so that my mate, who wouldn't put anything other than Bridgestone on his bike, eventually agreed to try them out and hasn't looked back. His pace on the track has really come on. His last set of tyres were S20's, because they were on sale, but he's now put Q3's back on again because of the confidence.

I now have an '11 CBR600 with 016 Pro's on it (they'd just been fitted prior to buying the bike) and I can't wait to get to Queensland Raceway later this month. I will be getting S21's as soon as these wear out because I like to try them all out.

(Sorry to move off subject.)
 
Honda CBR 600RR Forum
posts
3.9M
members
96K
Since
2003
A forum community dedicated to Honda CBR 600RR owners and enthusiasts. Come join the discussion about performance, engine modifications, troubleshooting, exhaust kits, and more!
Full Forum Listing
Explore Our Forums
General Discussion Pictures & Video/Sound Clips 03-06 RR Modifications 07-12 RR Modifications New Members