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Old 06-23-2010, 08:59 AM   #1
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Tow vehicle tire pressure Andy please HELP

I just bought a 2009 Chevy 2500 Van, to pull my 3000 lbs Argosy.
I am changing my 1000 lbs weight distribution bars to 600 lbs.
Tire says 80 lbs cold Max. Chevy says 50 lbs front, 80 lbs rear.
( Probably to keep up cargo rating ???)
Dealer sold it to me with 57 lbs front, 72 lbs rear. The ride is rough
AND I worry about it beating up the trailer.
I am thinking 50 lbs front, 62 pounds rear. What would Andy say????
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Old 06-23-2010, 09:39 AM   #2
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Dave
Look on the sidewall of the tire.Tire pressures should be stamped there. Follow the mfgrs stamped tire pressure and forget what a car dealer says. You should be fine, 600 lbs bars will be fine,just dont try and pull em down to tight.
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Old 06-23-2010, 11:02 AM   #3
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The tires are marked 80 lbs cold "max"

GM were the people that said 50 lbs front, 80 lbs rear, not a car dealer.
My point is that if the front tires can be as low as 50 lbs, then why not the rear tires be lower. As I said the ride is rough, and I worry that
the stiff suspension might crack the trailer frame or something.
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Old 06-23-2010, 02:11 PM   #4
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Quote:
Originally Posted by mandolindave View Post
GM were the people that said 50 lbs front, 80 lbs rear, not a car dealer.
My point is that if the front tires can be as low as 50 lbs, then why not the rear tires be lower. As I said the ride is rough, and I worry that
the stiff suspension might crack the trailer frame or something.
Running a lower tire pressure than "maximum" depends on several factors.

If the roads will be good, and the load on the tires is not anywhere near maximum, then tire pressue can be reduced.

However, "under inflated tires" can cause problems as well.

Use a pressure that your comfortable with, keeping in mind the tire temperatures, loads and speeds.

Yes, maxed out tire pressure, when not needed, stiffens the ride, as well as transfers more road shock, to the trailer.

Unfortunately, there is no absolute definitive answer to your question, unless your absolute travel parameters are known.

Andy
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Old 06-23-2010, 02:17 PM   #5
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weigh the rig, set the tv tires pressures accordingly.

without the scale info no1 can provide appropriate inflation numbers.

this is covered ad infinitum here.....

some might suggest ad nauseum.

with NO brand/model tire listed in the op there's not much point in linking the inflation tables...

besides they've been linked already many times.
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IF these are E rated tires on the van they can accept a WIDE RANGE of pressures based on load...

and many folks fiddle with the tables and inflation.

however there's plenty of evidence that running these tires SOFT...

is a NEGATIVE for handling/braking/control and generates MORE tire heat which is also bad.

but for those buying into the "let's make the stream ride sloppy and wallowing"...

that evidence is usually ignored.
__________

IF there is no need for E rated tires on the van

go to something else with adequate load/capacity but without EXCESS capacity.

a D rated LT tire can be more optimally inflated IF/AFTER weighing the rig.

or get some nice whitesidewall touring tires, like KINGS/crowns or these...

Radial Tires- Wide White Walls- www.WhiteWallTires.com

then cruisebabycruuuuze...

it's 3/4 ton van so E rated tires fit the vehicle profile but perhaps NOT your needs.

cheers
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Old 06-23-2010, 04:06 PM   #6
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Saying & posting are different

Quote:
Originally Posted by mandolindave View Post
...What would Andy say????
More like, "What would Andy post?". Andy understands liability, and if he has a commercial license related to this question he knows he could be sued for offering guidance based on the limited information presented here if bad events should ensue.

My tow vehicles have stickers mounted on the driver's side door jamb which give recommended tire pressures for my LR E tires for given situations. My TV's tires are inflated according to this guide.

None of the tires are inflated to maximum pressure as listed on the tire's sidewall.

Tom
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Old 06-23-2010, 05:25 PM   #7
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Personally, I find the increased traction and sidewall stiffness due @80psi to be a big win, so when towing anything substantial I run 80psi in our F250 rear tires.

- Bart
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