Non-Sexy MPG Advice - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 67 (permalink) Old 07-29-2007, 11:05 PM Thread Starter
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Non-Sexy MPG Advice

This is about as sexy as John Goodman in a speedo but it definitely works, particularly for heavy pickups.

Keep your tires aired up rock-hard.

This is a must for folks with firebomb tires but it makes a big difference on other brands as well.

I use 235-85 E rated tires and I keep them inflated to 80 psi, front and rear. Any more and the tire starts to "crown" - bulge out in the middle of the tread. That will wear the center of the tire out quickly. Not recommended.

My truck is very sensitive to this. If the tires get down to 70 psi, I lose 1 MPG. At 60 psi, 3 MPG. Ask me how I know that. Don't gundeck the tire inflation.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #2 of 67 (permalink) Old 07-29-2007, 11:07 PM
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Re: Non-Sexy MPG Advice

well my PJ's say 65psi but it didnt wear right so I played with the air, maybe this time i will leave it at 65psi and see how it goes I used to get good mileage to.

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post #3 of 67 (permalink) Old 07-29-2007, 11:12 PM Thread Starter
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Re: Non-Sexy MPG Advice

Use the max pressure listed on the sidewall. That is generally the crowning pressure. The pressure will be much less for C or D rated tires.

It will ride rough but MPG will improve.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #4 of 67 (permalink) Old 07-29-2007, 11:16 PM
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Re: Non-Sexy MPG Advice

In my case I am just fouled I guess. I run 285-75-16s on my stock alum. wheels. I really need 10 " wheels to get proper foot print. My other 97 I had 235-85s and they were aired up to 80 but it was a 2wheel drive and I drove it out of town alot.

97 crew cab shorty-4x4 Lots of mods .
Tuned by T Wildman
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post #5 of 67 (permalink) Old 07-29-2007, 11:16 PM
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Re: Non-Sexy MPG Advice

I dont mind the ride I've never had anything smaller then a 33 lol so im used to it. should I back it off some it wears wrong like the center my buddy got 50k on his 38 Pj's

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post #6 of 67 (permalink) Old 07-31-2007, 01:08 AM
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Re: Non-Sexy MPG Advice

Same here dave, hard as a rock 80 psi.

Works the best mileage wise and tires last the longest for me this way.
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post #7 of 67 (permalink) Old 07-31-2007, 01:14 AM
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Re: Non-Sexy MPG Advice

Maybe that's part of why I only get about 14mpg. I ride around at race psi front and rear everywhere.

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post #8 of 67 (permalink) Old 07-31-2007, 01:22 AM
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Re: Non-Sexy MPG Advice

Ok I got a 6700lb F250 I run Yokohama geolanders 285 75 16. wHAT do I run front pressure and rear pressure for good ride and best tread wear? At 600 for four I need to know. Tate

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post #9 of 67 (permalink) Old 07-31-2007, 01:33 AM
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Re: Non-Sexy MPG Advice

i have been running 55 in my 305s the max it 65

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03 F-350 Lariat CC SB with 6.0
Zoodad, K&N intake, Acufab elbow, MBRP 4" 409 turbo back, SCT tuned by Innovative Diesel, Dual front shock mounts, front add a leaf, eagle wheels with nitto 305 70 16s. 5% tint, linex liner and upgraded audio and video inside
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post #10 of 67 (permalink) Old 08-01-2007, 08:30 PM Thread Starter
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Re: Non-Sexy MPG Advice

Every tire has a max pressure on the sidewall. Use that pressure.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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