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Old 03-25-2014, 08:17 PM   #11
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Coot, why increase the front tire pressure towing when no additional weight is added to the front? Am I missing something?
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Old 03-25-2014, 08:34 PM   #12
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Coot, why increase the front tire pressure towing when no additional weight is added to the front? Am I missing something?
The 5er does put wt on the front also and I don't like any 'squirm' coming from the front in case I have to swerve to avoid something.
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Old 03-25-2014, 09:55 PM   #13
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Being the rebel that I am, I run my Michelin LTX AT/2's at 70# in front and 65# in rear, just like it says on the sticker.
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Old 03-26-2014, 06:16 AM   #14
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Your original tires for the car where probably even P-tires or XL/reinforced/Extraload with a pressure needed for the maximum load of 35 or 41 psi for speeds below 99m/h.

E-load/10PR tires you have now need 80 psi for the maximum load.
But the actual loads on your tires have not chanched with the other tires.
Now stiffer tires ( E-load stiffer then P-tire) need a bit more pressure for the same load, because they have lesser surface on the ground at the same deflection.
But because the maximum load of the tires is now much higher , you still wont need the 80 psi.

If you give the maximum load and speed of tire, and from car the GAWR's and GVWR ( Gross Axle/Vehicle Weight Ratings) I can calculate an advice pressure for that. The original advice on the plancard somewhere , where also the oem pressure advices, are also calculated for the GAWR's in America.
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Old 03-26-2014, 06:27 AM   #15
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Being the rebel that I am, I run my Michelin LTX AT/2's at 70# in front and 65# in rear, just like it says on the sticker.
Dutch. What sticker? Door panel?

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Old 03-26-2014, 08:33 AM   #16
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All this is fine and dandy as long as the vehicle in question doesnt have tpms.

I see its a 2011 which means any pressure 10lbs one way or the other then advertised will turn tpms light on.




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Old 03-26-2014, 09:54 AM   #17
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But mostly TMPS can be reset if you know how its done.
Read once of that they could even adyust the percentage higher and lower at wich alarm was set, and ofcource the higher pressure .
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Old 03-26-2014, 10:57 AM   #18
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But mostly TMPS can be reset if you know how its done.
Read once of that they could even adyust the percentage higher and lower at wich alarm was set, and ofcource the higher pressure .
Pressure values can only be done via a tuner or the dealer.
For a fee of course.

We JUST had our 2007 1500 gmc done at the dealer when we went from p rated tire to a LT.



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Old 03-26-2014, 11:16 AM   #19
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1Texan, Are the Michelins you bought the LTX M/S2 75R/16? If so, I'm surprised you were able to get them as they are replacements for the M/S that are back ordered across the nation. 1.2 million M/S 75R16 types were recalled recently creating the shortage.
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Old 03-26-2014, 11:53 AM   #20
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All this is fine and dandy as long as the vehicle in question doesnt have tpms.

I see its a 2011 which means any pressure 10lbs one way or the other then advertised will turn tpms light on.






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this x2.....my tpms came on under 60psi...when i switched to the new bmf rims and nittos (which are lt's as well, but only rated to 65psi max) i had to use my tuner to reset my tpms to 50.....the dealer was charging 75$ to do this....

also gotta remember that on a truck like my f250 with a dry weight near 8k lbs its prob not good to ever run under 50psi. Michellin has charts that give you minimum pressures based on individual axle weights...actually you can call them with your vehicle specs and they will tell you what the recommended pressure is....i run 65 in my nittos at all times, 65 in my michellins when not towing , and 80rear, 70 front when towing....



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