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Old 05-30-2017, 10:37 AM   #1
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2017 DS 4369 - Spartan Chassis - Tire Inflation?

I know that weight is a major factor but I'm curious to know what you keep your tire pressures at to give you the best ride?

Thanks!
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Old 05-30-2017, 11:20 AM   #2
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Weight is the factor. Without knowing the weights you can't set the correct pressure. Weighing each wheel position, single or dual, is best. Next best is by axle which can be done a CAT truck scale. Then set pressure based on the Michelin tire chart.

The folks that post their pressures are usually under the max pressures, typically 15-20 lbs less.
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Old 05-30-2017, 04:07 PM   #3
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Quote:
Originally Posted by specmga1 View Post
I know that weight is a major factor but I'm curious to know what you keep your tire pressures at to give you the best ride?

Thanks!
I like to run my tires at Fronts>120lbs: Rears at 110lbs, and Tag at 105 lbs....i have found I get the best and longest tire wear at these pressures...Chuck
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Old 05-30-2017, 04:31 PM   #4
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I like to run my tires at Fronts>120lbs: Rears at 110lbs, and Tag at 105 lbs....i have found I get the best and longest tire wear at these pressures...Chuck
Thanks!
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Old 05-30-2017, 04:36 PM   #5
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Front = 100 275X70X22.5 At 11.5K lbs.
Rear = 90 275X70X22.5 At 20K lbs.

That is what Michelin says and that is what I do.
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Old 05-31-2017, 11:09 AM   #6
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Don't forget when seeing other folks tire pressures to take into account the tire sizes may not be the same as on your DS. 2017 DS 4369 has 365/70R22.5 on the front and 315/80R22.5 on all of the rears.
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Old 05-31-2017, 12:25 PM   #7
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I am running 105 on the front tires, and 95 on the drive and tag axles. Those are set for my axle weights.
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