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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through June 01, 2010 » Advice, tire pressure on dirt « Previous Next »

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99savage
Posted on Wednesday, May 19, 2010 - 09:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Took a job as a Census enumerator. Figured it would combine riding & some supplementary income.

Drove thru one of the areas I will be enumerating. - Mostly boonie, hi-crown blacktop twisties & some not bad gravel roads but also includes a few locations etched into the sides of really hi hills & accessible only by dirt roads.
Had no problem getting to them w/ my 2WD, limited slip, pick-em-up.

Right now the tires are legal but not much more & I run the w/ the air pressure a little above factory spec.

Any advice on what pressure I should run when tooling up steep, rutted dirt roads?

(I will take a tire pump w/ me.)
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Mikef5000
Posted on Wednesday, May 19, 2010 - 10:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I've read numerous reviews that said the lowering tire pressure heavyweight bikes does not give a noticeable gain in performance, but does allow wheels to be more easily damaged.

Leave the lower tire pressures to the light weight tube type bikes.
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Skifastbadly
Posted on Wednesday, May 19, 2010 - 10:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I don't fart around with tire pressure. I ride my Uly on gravel all the time and never even thought about it. From what I hear on the intertube, the biggest complaint about the Syncs off tarmac is that they have thin sidewalls that can get ripped, and I can't imagine lower tire pressure improves the situation.}
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Towpro
Posted on Thursday, May 20, 2010 - 07:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

spend $200 and throw a set of D616's on it and leave them set at highway pressures.
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Growl
Posted on Saturday, May 22, 2010 - 10:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

You might try a couple pounds below factory spec... it helps
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Natexlh1000
Posted on Saturday, May 22, 2010 - 11:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The factory tires are already pretty wide and a lower profile than a typical dirtbike.
I would just leave the pressure the same.
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Dr_greg
Posted on Saturday, May 22, 2010 - 11:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

If I'm going to be on dirt for a lengthy period, I lower the tire pressure F/R to 25 psi. I can tell the difference.

The only off-pavement puncture I've ever had occurred with the rear tire at "road" pressure (38 psi).

--Doc
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99savage
Posted on Saturday, May 22, 2010 - 07:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks for the help.

Dropped the pressure about 2psi below factory spec & not having much of a problem staying tire side down on the gravel roads & dirt, half mile long "driveways".

BUT

Had a new, horrible, riding experience today that made me park it & hoof a 1/2 mile.
The "driveway" was covered w/ a thick layer of river wash gravel w/ pebbles bigger than marbles & smaller than golf balls. Could only make progress by pouring on the throttle - No steering control & the tires seeking sunlight.
Anybody ever ride thru similar conditions?
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Bzrider
Posted on Saturday, May 22, 2010 - 10:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

that big gravel can be hell i have been practicing on it quit abit stand as vertical as possible easy throttle steer only with your feet if you hold the bars tight on your arrrs u willgo
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Cityxslicker
Posted on Monday, May 24, 2010 - 12:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

drop to second, power on, minimal inputs to steering.
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