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Author Topic: Tyre Pressures  (Read 2855 times)

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AJAyre

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Tyre Pressures
« on: May 04, 2011, 10:09:11 PM »

Hi Guys

Since my bike didn't come with a manual can someone who does have one tell me the correct tire pressures for the road glide?


Regards

AJ
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GregKhougaz

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Re: Tyre Pressures
« Reply #1 on: May 04, 2011, 10:23:42 PM »

A pound or two less than the maximum printed on the tire sidewall should do you just fine.
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SBB

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Re: Tyre Pressures
« Reply #2 on: May 04, 2011, 10:42:25 PM »

Hi Guys

Since my bike didn't come with a manual can someone who does have one tell me the correct tire pressures for the road glide?


Regards

AJ

The correct tire pressure is the tire pressure recommendation that's printed on the side of the tire by the manufacturer.
Typically the pressure listed is listed as a "cold pressure."

 :2vrolijk_21:

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rdawg

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Re: Tyre Pressures
« Reply #3 on: May 04, 2011, 10:47:44 PM »

Agree with previous posts, but, my manual shows 36/40 cold.
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motor1

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Re: Tyre Pressures
« Reply #4 on: May 04, 2011, 11:54:07 PM »

You should ALWAYS go with vehicle manufacturers specs. As posted earlier, HD calls for 36 PSI front, 40 PSI rear.
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GregKhougaz

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Re: Tyre Pressures
« Reply #5 on: May 05, 2011, 01:12:57 PM »

I have to clarify a couple of points here.  If you read the side of your tire, you will not get a "correct" pressure.  You will see a "GVWR,"  (Gross Vehicle Weight Rating) and a MAX PSI COLD (pounds per square inch)  pressure.  These are U.S. DOT (Department of Transportation) requirements.  You can read more here:

Dunlop Technical Information Guide 

The Dunlop website has yet to list the FLTRUSE in it's fitiment guide but it should be the same as the FLTRSE3 which is listed.  It recommends 36 front and 40 rear psi as noted above.  That is NOT the ALWAYS pressure.  This varies depending on the weight carried, temperatures and speed.  From Dunlop:

 "TIRE PRESSURES (SEE ALSO TIRE MOUNTING)
Follow pressure recommendations shown on the Dunlop Motorcycle Tire
Application Guide.
...

Keep in mind that hard cornering, passengers, heavy loads and sustained
high speeds will require higher pressures (up to that indicated on the sidewall).
CHECKING TIRE PRESSURE IS THE MOST IMPORTANT TIRE
MAINTENANCE FUNCTION YOU AND YOUR CUSTOMER CAN PERFORM.
For high-speed, fully loaded or dual-riding touring-motorcycle applications,
inflate tires to maximum recommended by vehicle manufacturer for
Dunlop fitment. Never exceed maximum load indicated on tire sidewall or
vehicle capacity load found in owner’s manual, whichever is lower.
Underinflated tires can result in imprecise cornering, higher running temperatures,
irregular tread wear, fatigue cracking, overstressing and eventual failure of the tire carcass,
or loss of control, which could cause accident, injury or death.
Overinflating tires does not increase load-carrying capacity,
but will result in a hard ride and accelerated tire wear in the
center of the contact patch.  Advise your customers to check
cold tire pressure frequently with a good-quality gauge that holds a reading,
and always before extended trips."

Finally, Dunlop and HD have had some famous disagreements, most recently about the now discontinued D407F.  It is the tire manufacturer that designs, tests and ultimately is responsible.  I'd go with their opinion over HD anytime. 
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kiwihog

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Re: Tyre Pressures
« Reply #6 on: May 05, 2011, 03:03:40 PM »

You should ALWAYS go with vehicle manufacturers specs. As posted earlier, HD calls for 36 PSI front, 40 PSI rear.
Ditto ....sidewall markings show maximum pressure and weight etc ...tire manufacturer has no idea what bike the tire is going on..
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motor1

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Re: Tyre Pressures
« Reply #7 on: May 05, 2011, 10:48:22 PM »

 Just keep in mind you are riding a Harley Davidson, not a Dunlop. Vehicle manufacturer determines the correct tire pressure based on the testing of their vehicle, does not matter whether it is a car or motorcycle.
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