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+--- Thread: Tyre pressures for BT21`s ? (/showthread.php?tid=65261)
Tyre pressures for BT21`s ? - AN GOF - 30-08-13
Forgot to ask the old owner when i bought my fzs600, whats the front and rear pressure supposed to be ?
Re: Tyre pressures for BT21`s ? - Dead Eye - 30-08-13
Usually down to personal preference and rider weight more than anything
I'm currently running 36F / 42R but I'm a relatively heavy rider
Re: Tyre pressures for BT21`s ? - darrsi - 30-08-13
:agree
Re: Tyre pressures for BT21`s ? - stevierst - 30-08-13
I used to run 34/40 and I'm 13.5 stone. They did ok at that.
Re: Tyre pressures for BT21`s ? - Punkstig - 30-08-13
36/40 wether fully loaded or not, only time I do different is trackdays!
Re: Tyre pressures for BT21`s ? - darrsi - 30-08-13
(30-08-13, 07:22 PM)Punkstig link Wrote:36/40 wether fully loaded or not, only time I do different is trackdays!
What pressure would you use on a track?
Re: Tyre pressures for BT21`s ? - AN GOF - 30-08-13
Thanks guys, im running 32/40 atm so will stick with that i rekon 8)
Re: Tyre pressures for BT21`s ? - Skippernick - 30-08-13
I have bt23s and used to rum 36/40 now dropped them down a bit to 34/38.
Feel its given me a bit more cornering confidence, might just be pyshcological.
Re: Tyre pressures for BT21`s ? - BluprintZ - 30-08-13
I've just got a BT23 for the front and a BT21 for the rear, been advised to run them at 33psi front and 36 rear, more tread on the road.
I'm around 12 stone.
G ; )
Re: Tyre pressures for BT21`s ? - Punkstig - 31-08-13
(30-08-13, 07:49 PM)darrsi link Wrote:[quote author=Punkstig link=topic=9641.msg97829#msg97829 date=1377886926]
36/40 wether fully loaded or not, only time I do different is trackdays!
What pressure would you use on a track?
[/quote]
First session I went with a recommended 30/30 cold which sucked balls, 2nd session and all sessions after were 32/34!
Re: Tyre pressures for BT21`s ? - darrsi - 31-08-13
(31-08-13, 12:02 AM)Punkstig link Wrote:[quote author=darrsi link=topic=9641.msg97842#msg97842 date=1377888572]
[quote author=Punkstig link=topic=9641.msg97829#msg97829 date=1377886926]
36/40 wether fully loaded or not, only time I do different is trackdays!
What pressure would you use on a track?
[/quote]
First session I went with a recommended 30/30 cold which sucked balls, 2nd session and all sessions after were 32/34!
[/quote]
I s'pose heat, expansion and a nice even flat service majorly changes things.
30/30 must've felt like a golf cart!
Re: Tyre pressures for BT21`s ? - Punkstig - 31-08-13
(31-08-13, 08:41 AM)darrsi link Wrote:[quote author=Punkstig link=topic=9641.msg97907#msg97907 date=1377903765]
[quote author=darrsi link=topic=9641.msg97842#msg97842 date=1377888572]
[quote author=Punkstig link=topic=9641.msg97829#msg97829 date=1377886926]
36/40 wether fully loaded or not, only time I do different is trackdays!
What pressure would you use on a track?
[/quote]
First session I went with a recommended 30/30 cold which sucked balls, 2nd session and all sessions after were 32/34!
[/quote]
I s'pose heat, expansion and a nice even flat service majorly changes things.
30/30 must've felt like a golf cart!
[/quote]
Yeah, that's why you have to lower them for track, the heat generated is incredible which rises the pressure considerably.
Only takes a couple of laps to warm up but those first ones do feel naff- slow and hard to turn in, by the end of the first session the feeling wasn't 100%, still needed to muscle the bike over for corners, so I knew I needed to increase the rear slightly. Set them to 32/34 for the next session and it felt awesome so kept it at that for the rest of the day!
Re: Tyre pressures for BT21`s ? - darrsi - 31-08-13
Unfortunately i seem to have a slow air leak on my rear, so i range from 42 to 36 over about a week.
Thinking about it, midweek probably feels best, which is probably 38 to 40.
Luckily i have access to an airline at work so although slightly irritating it's not a major.
Re: Tyre pressures for BT21`s ? - nick crisp - 31-08-13
(31-08-13, 09:46 AM)darrsi link Wrote:Unfortunately i seem to have a slow air leak on my rear, so i range from 42 to 36 over about a week.
Thinking about it, midweek probably feels best, which is probably 38 to 40.
Luckily i have access to an airline at work so although slightly irritating it's not a major.
I have Wednesdays off, so that would work for me! :rollin
Re: Tyre pressures for BT21`s ? - His Dudeness - 31-08-13
Think mine are 32/36