PSI with 325/65/18

Old Nov 28, 2006 | 11:05 PM
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PSI with 325/65/18

What PSI is everyone running on their 325/60 and 325/65 tires on stock FX4 wheels. I am at 35 psi each tire. Whats the best for even wear?
 
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Old Nov 29, 2006 | 07:26 AM
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Originally Posted by SVTErick
What PSI is everyone running on their 325/60 and 325/65 tires on stock FX4 wheels. I am at 35 psi each tire. Whats the best for even wear?
It depends on what type of tire it is. Is it a p series tire, then 35 would be about right. If LT 40 or higher depending on the load range.
 
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Old Nov 29, 2006 | 09:04 AM
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It is an all terrain tire. Kumho Road Venture AT
 
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Old Nov 29, 2006 | 09:27 AM
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That is an LT load range D tire according to their site. I would try around 44. Because you are running it on a wheel that is really too narrow for it, (they don't list the width range, but show details on a 9.5" wide rim), you may have to lower the pressure a little bit to get decent tire wear, but not too much. Go too low and you take a chance with overheating the tire and having a blowout or tread separation. I wouldn't go lower than 40.
They really don't give you much info on that site, like the rim width range, weight carrying ability, etc.
 
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Old Nov 29, 2006 | 11:14 AM
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i ran my 33x12.5R18 toyos at 45 psi toyo recommended (for running on stock wheels) i run my 35x12.5R18 xterrains at 40 psi
 
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Old Nov 29, 2006 | 02:29 PM
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I ordered the 305/65/18 BFG all terrian and they are load range E what psi should I run on factory rims cause I get them on next week.
 
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Old Nov 29, 2006 | 02:48 PM
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Originally Posted by smitty'slariat
I ordered the 305/65/18 BFG all terrian and they are load range E what psi should I run on factory rims cause I get them on next week.
what is that- a 32" tire? id say run from 36 psi to 40
 
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Old Nov 29, 2006 | 03:32 PM
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Originally Posted by BalogUK
what is that- a 32" tire? id say run from 36 psi to 40
That would make it below half the load carrying ability of that tire. Max psi is 80. I would run in the range of 45-50. I have used 50 before with load range E tires and got good wear, 40k+. However again this tire has a recommended wheel width wider than the stock wheel, so he may have to lower a bit, I would not go below 45.
 
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Old Nov 29, 2006 | 06:44 PM
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That tire is a 34x12 tire and the load range E is heavier than normal that is why I am asking
 
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Old Nov 29, 2006 | 09:55 PM
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again, i work at diso**** tire, we put these on all day, everyday.

if its a 33 or less.. u dont need more then 35 unless its on a heavy duty.. (250 or up)

the 150 only needs 35.. if u want better gas milage, (minimal, but better then nuthin) then run it higher.. if u mudding, u want ur tire pressure low, so that ur tire is wider, instead or narrow, then jsut fill up afterwards. but dont run on the road at high speeds at a low pressure.. u will have a blow out.

u want a bubble in ur tire .. just put it that way.
 
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Old Nov 30, 2006 | 07:48 AM
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Originally Posted by F150_B.F.D.M.
again, i work at diso**** tire, we put these on all day, everyday.

if its a 33 or less.. u dont need more then 35 unless its on a heavy duty.. (250 or up)

the 150 only needs 35.. if u want better gas milage, (minimal, but better then nuthin) then run it higher.. if u mudding, u want ur tire pressure low, so that ur tire is wider, instead or narrow, then jsut fill up afterwards. but dont run on the road at high speeds at a low pressure.. u will have a blow out.

u want a bubble in ur tire .. just put it that way.
Sorry, but that is bull. If there was no need to put more than 35 in your tires on a 150, Ford would not have 40 marked on the doors for LT tires with a load range of C, and higher for tires with higher load ranges.
 
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Old Nov 30, 2006 | 07:54 AM
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i run 48psi in mine.. which is mainly because they are D rated tires and can handle the load, and to keep them from rubbing on the insides, have not noticed any balooning or uneven wear anywhere..
 
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