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post #1 of 14 (permalink) Old 05-05-2010, 07:17 AM Thread Starter
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I have a 1998 gl1500 aspy. Im sure someone has messed around with tire pressure and air suspension could you share what you found to be the best air pressure for front and back tires and air for rear suspension. I have kenda tires on the bike. Thanks guys for any info. u can share...

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post #2 of 14 (permalink) Old 05-05-2010, 07:46 AM
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Most will agree that they ought to be 40+ front and rear for best handling.

I just had E3's put on and was looking at a 3,000 mile trip and aired them to 44 psi front and rear. New tires usually loose a bit, pays to watch 'em close.

I really liked the much improved handling feel of 44 psi compared to the lower "suggested" of 36 psi.

Soft tires and good handling don't go together very well.


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post #3 of 14 (permalink) Old 05-05-2010, 08:08 PM Thread Starter
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AZgl1500 wrote:
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Most will agree that they ought to be 40+ front and rear for best handling.

I just had E3's put on and was looking at a 3,000 mile trip and aired them to 44 psi front and rear. New tires usually loose a bit, pays to watch 'em close.

I really liked the much improved handling feel of 44 psi compared to the lower "suggested" of 36 psi.

Soft tires and good handling don't go together very well.
How about rear air suspension?

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post #4 of 14 (permalink) Old 05-06-2010, 12:04 AM
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There are a lot of variables on the rear shock pressure. Does your bike have the standard setup of the factory shock on the left and the air shock on the right? Or has the left shock been changed out to the progressive 450IAS? Or do you have 2 air shocks in the back as in the progressive 416's? Also your appx weight will be a factor along with do you normally ride 1 up or 2 up? ANd how many miles are on the bike? If it is stock, the left shock could be worn out and possibly a fluid change may be in order for the factory air shock. So like I said, there are a lot of variables.....

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post #5 of 14 (permalink) Old 05-06-2010, 12:26 AM
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I weigh 265#, I run about 56 psi on the rear suspension. It will bottom out on a hard bump, but it gives me that Cadillac soft ride that I want.

hard bumps? I just stand up and let the bike and my knees absorb it.


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post #6 of 14 (permalink) Old 05-06-2010, 01:04 AM
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good question and answers. Something I've wondered my self. thanks.

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post #7 of 14 (permalink) Old 05-06-2010, 06:56 AM Thread Starter
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pwhoever wrote:
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There are a lot of variables on the rear shock pressure. Does your bike have the standard setup of the factory shock on the left and the air shock on the right? Or has the left shock been changed out to the progressive 450IAS? Or do you have 2 air shocks in the back as in the progressive 416's? Also your appx weight will be a factor along with do you normally ride 1 up or 2 up? ANd how many miles are on the bike? If it is stock, the left shock could be worn out and possibly a fluid change may be in order for the factory air shock. So like I said, there are a lot of variables.....
Standard set up on the shocks. I weigh about 210lbs,wife about 175lbs usually ride 2 up but do ride by myself often. I have app. 74,000 miles on the bike.

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post #8 of 14 (permalink) Old 05-06-2010, 07:24 AM
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We have a 95 SE and ride two up most of the time. I run 36-40 on the front and 41 on the rear tire. I have found that I get the best handling at 57 pounds in the rear shocks. It rides a little stiff, but doesn't squirrel around very much.

We do a lot of long distance riding and find this works best for us. Like has been said, the suspension pressure can be more of a personal taste/preference than anything else.

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post #9 of 14 (permalink) Old 05-06-2010, 08:22 AM
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I wonder how accurate the "gauge" is when considering the air pressure in the rear shock? I noticed reference to specific numbers such as 57 lbs. Do you suppose it might be +/- 5 lbs or more? I would certainly not supprise me.

Does anyone know specifically how that is measured or calculated in the GW?

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post #10 of 14 (permalink) Old 05-06-2010, 09:51 AM
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A fair estimate is to set the pressure with your bike loaded so that the rear suspension is compressed 1.5" from full-droop.

Of course, putting both of you on the bike AND climbing under the saddlebag can be quite an experience (lemme know how that works out for ya )

The idea is to get some estimate of the indicated pressure for your bike -- then tweak from there as everyone does.

Indicated 57psi worked for me (2-up for 359# seated-total) on a very tired OEM shock.
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