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Buell Forum » XBoard » Buell XBoard Archives » Archive through July 20, 2006 » Pirelli stradas tire pressure « Previous Next »

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Sgthigg
Posted on Tuesday, July 18, 2006 - 04:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

those running the stradas what pressures you all running. I just got mine mounted and was wondering
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Jaimec
Posted on Tuesday, July 18, 2006 - 07:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just checked the Pirelli site. After converting from "bar" to "psi" it looks like the same recommendation Metzeler makes for the Sportec M1... 34 front/36 rear. Not surprising, as Metzeler is the Pirelli parent company.
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Slaughter
Posted on Tuesday, July 18, 2006 - 10:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Remember, factory recommended pressures are based on tire wear, NOT performance. The published pressures give you max tire life.

For "spirited riding" - the pressures are always lower - for most constructions of Pirelli, it's closer to 29 front, 30-31 rear and then you have to adjust accordingly since YMMV.
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Jaimec
Posted on Tuesday, July 18, 2006 - 10:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hmmm... that sounds AWFULLY low to me. Considering how hot and sticky my tires get with the recommended pressures, I'd be very leery of running them any lower. FWIW, Buell actually recommends running them a little higher than the tire manufacturer's recommendations.
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Nasty73z
Posted on Tuesday, July 18, 2006 - 12:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Don't forget that those are supposed to be cold pressures. Once you are out riding and they become "hot and sticky", the pressure will actually rise a few pounds as the air heats and expands. I have Diablo Strada's and if I am commuting on the highway I run 36f/38r just like stock. I experiment around in the twisties and have run 34f/34r and 30f/32r which is what I have kept. The front end feels better at big lean angles with the lower pressure.
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Jaimec
Posted on Tuesday, July 18, 2006 - 12:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Proper way to find the correct air pressure in your tires for the way YOU ride on YOUR motorcycle:

1) Inflate the tires to your "normal" pressures when the bike is cold.
2) Go for a "typical" ride of a half an hour or so.
3) Stop and IMMEDIATELY check your tire pressures.

If the pressure has increased by 2 or 3 psi, congratulations, it's perfect. If the pressure has increased by MORE than 3 psi, your starting pressure was too low. When the bike is cool again, add some air, check the pressures, and try again till you get it right. If the pressure has increased by LESS than 2 psi, you started with too much air in your tires. Let the bike cool down, release some air, check the pressure and try again. Both the tire and bike manufacturers give you estimates for the AVERAGE rider. Considering how particular I've seen you guys are with suspension settings, you should add this info to your "mental toolbox" as well.

If you're REALLY anal retentive about this subject, repeat the above procedures for:

1) Two-Up
2) Loaded for touring
3) Two Up AND loaded for touring

Oh, and write this information down for future reference. For the "Adrian Monks" amongst us, repeat this process for each BRAND of tire you use.
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Slaughter
Posted on Tuesday, July 18, 2006 - 01:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Jaimec - you got it about right.

My experience with Pirelli is with the Diablo and Diablo Corsa and for racing the recommended starting pressures are 29/30-31 front/rear. On the SV I ran 29/30 (Diablo Corsa front and Diablo rear) and on the XB, I only run slicks so don't have good data in my notebook. Diablo front and Diablo Corsa rear gives a softer compound in the front which worked well for the SV.

Using the pressure-rise guidelines is a decent way to get a sense of how hard the carcass is being worked.

Keep in mind, when inflated for cornering (not tire life), and ridden hard, the tire life will be less than 1/4 that of recommended pressures.
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Sgthigg
Posted on Wednesday, July 19, 2006 - 01:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks, I got some good info here form this. I wanted to make sure i was in the ball park on the psi for the buell.
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