Bridgstone Battlax S21 - Track use?

[GManRR]

My Gen4 RR was delivered with Bridgstone S21 tyres. despite being an older model to the newer S22, I have no problem with them on the road even when I push the bike a bit.

Anyone used the S21 on the track? How was it and what pressures did you run? Any lean angle limitations and/or suggestions?

Note: there are tyre pressure recommendations on Bridgestone's website for S22 but I couldn't find anything for S21. So i assume they are the same?
Track-Day-Air-Pressure-Chart-May-2020-FINAL.pdf (bridgestonemotorcycletires.com)

S22 tyre pressure recommendation for track is Front: 30Psi Rear: 26 Psi (cold tyres pressure)

thoughts?

 

[alex]

Ask the tyre man at the track. But generally 32F/28R is a good start. Less pressure makes the thing slow to steer.

Also; We ask that new people say hello

 

[GManRR]

Thanks alex

 

[bmwbadboy]

My Gen4 RR was delivered with Bridgstone S21 tyres. despite being an older model to the newer S22, I have no problem with them on the road even when I push the bike a bit.

Anyone used the S21 on the track? How was it and what pressures did you run? Any lean angle limitations and/or suggestions?

Note: there are tyre pressure recommendations on Bridgestone's website for S22 but I couldn't find anything for S21. So i assume they are the same?
Track-Day-Air-Pressure-Chart-May-2020-FINAL.pdf (bridgestonemotorcycletires.com)

S22 tyre pressure recommendation for track is Front: 30Psi Rear: 26 Psi (cold tyres pressure)

thoughts?

Call FWR and ask

 

[GManRR]

Update: i Asked the tyre guy on track. I run 32F/30R and once the tyres warmed up ( no tyre warmers, took about 2 laps to get into their temp window) they felt very comfortable and sticky. I felt comfortable enough to regularly hit 52-56 deg lean angle ( see attached image) and even got my knee down for the first time ever. TBH, when it first happed I was not expecting it and I was more startled than excited

https://www.dropbox.com/s/jlxr6nuymxcx6vi/IMG_20210813_120040.jpg?dl=0

oh, and i now said hi in the welcome area :scooter::scooter:

 

[user 2379]

Thanks for the update. I have these tyres so nice to know they faired well on track. How did they look at the end of your session?

 

[GManRR]

No worries. Here's how my rear tyre looked.

https://www.dropbox.com/s/bundgjz75p4crkp/img_20210813_152318.jpg?dl=0

This at 721 miles with the last 80 on track. Still plenty of thread left.