Cooper STT PSI

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11-15-2007, 12:40 AM

supercrewser13

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Cooper STT PSI

i just bought cooper stt tires for my 03 F150 supercrew and i was wondering what psi would be best to run these tires so i get the most life out of them. 265 70 17 Load range E 10 Ply

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11-15-2007, 05:51 AM

svt2205

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I think you'll be fine in the 40 - 45 psi range.

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11-15-2007, 07:08 AM

kingfish51

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Quote:

Originally Posted by supercrewser13

i just bought cooper stt tires for my 03 F150 supercrew and i was wondering what psi would be best to run these tires so i get the most life out of them. 265 70 17 Load range E 10 Ply

If the max pressure is 80, run them at 50. If the max is 65, run them at 45. Do not go any lower than about 42 in either case.

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11-19-2007, 10:59 PM

overradiaded

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what abt. 04 fx4 with 35/12.5/18 bfg km2

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11-20-2007, 07:20 AM

kingfish51

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Quote:

Originally Posted by overradiaded

what abt. 04 fx4 with 35/12.5/18 bfg km2

Per the web site, those are a load range D with a max of 50. 2910lbs at 50. I would run them somewhere in the range 0f 36-40. Would not go any lower than 35 or 36. I would try 38 first and keep an eye on wear.

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