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Old 02-02-2005, 08:09 AM   #1
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What Tire Pressure For The Best Gas Mileage?

Running 35 psi in my 16's. Getting about 27 mpg average.
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Old 02-02-2005, 08:34 AM   #2
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I wouldn't run much higher than that.

And 27mpg average is pretty darn good.
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Old 02-02-2005, 11:18 AM   #3
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dont even think about going any higher cuz ull be askin for trouble
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Old 02-02-2005, 11:37 PM   #4
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36F/34R on 18s
No problems
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Old 02-02-2005, 11:58 PM   #5
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27mpg is good...thats what a stock 4th gen is rated from the EPA....
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Old 02-03-2005, 06:54 PM   #6
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I'm running 35 psi when warm on all 4 stock Potenzas.
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Old 02-03-2005, 09:58 PM   #7
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As high as your dare. I run 44.
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Old 02-04-2005, 07:18 AM   #8
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44???!!! hope you have life insurance. .lol.. jk
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Old 02-04-2005, 10:39 AM   #9
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I use to run 45-50psi on my Yokohama AVS ES100.....max PSI on that tire was 51.....they have REAL soft sidewalls that is why I bumped it up to 45-50....if i ran 35psi on those Yokohamas then I would get sidewall flex and slip and slide everywhere.....

running near the MAX PSI isn't so bad if your sidewall is very soft....I mean i ran my yokos above 45psi for nearly 15k miles and the treadware was wonderful
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Old 02-04-2005, 11:21 AM   #10
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Quote:
Originally Posted by 96mAx2fast
44???!!! hope you have life insurance. .lol.. jk
They are rated at 44 max PSI. I run 60 on the rears at the 1/4 mile.
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Old 02-07-2005, 09:05 PM   #11
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woudnt you lose more grip if you had more air in them? i run mine in 31, since i have the potenzas, need all the grip i can get.esp in the rain
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Old 02-08-2005, 12:39 PM   #12
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i run 44 psi on pzero nero m+S
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Old 02-08-2005, 12:52 PM   #13
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whats the best psi for the stock se 18's with stock goodyears 245/45/18's on em??
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Old 02-10-2005, 05:37 PM   #14
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My 17" also say 51 Max PSI. I have been reluctant to take them that high. I have them at 35. Will 45-50 make that much of a difference?
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Old 02-10-2005, 10:07 PM   #15
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Quote:
Originally Posted by ag2k
My 17" also say 51 Max PSI. I have been reluctant to take them that high. I have them at 35. Will 45-50 make that much of a difference?
Yes, do it and find out. It will make a difference in gas mileage, handling, grip and ride comfort.
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Old 02-14-2005, 06:55 AM   #16
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35 psi or higher. If I have the 29psi recommended by the Nissan, my tires looks under inflated.
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Old 02-14-2005, 08:02 PM   #17
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running 34 psi (cold)... all in all, get about 310 from a full tank
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Old 02-14-2005, 08:27 PM   #18
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Quote:
Originally Posted by chun
woudnt you lose more grip if you had more air in them? i run mine in 31, since i have the potenzas, need all the grip i can get.esp in the rain

i read in... motor trend i think, that running lower air pressures in the rain can actually decrease your wet traction.

they showed pics of two tires, one inflated to recamended pressure and one under inflated. the under-inflated tire had dramatically less road contact...
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Old 11-01-2005, 02:32 PM   #19
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need some Basic TIRES

undefinedundefinedundefinedlooking to buy a set of 4 tires keeping the price down business has been tough here.. well less expensive. any suggestions I have Yokohama that came with the car 35K and looking to get new ones. nissan max 1999 GXE. thanks
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Old 11-01-2005, 02:40 PM   #20
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The higher the air pressure the better the gas mileage; especially on the highway. If you're worried, back down the max psi by about 5 lbs. Properly inflated tires will give you the best wet traction. When the whole "contact patch" is firmly on the road the tire will displace the most water.
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Old 11-01-2005, 02:52 PM   #21
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I'm currently running 35F/34R with my new Yokohama Avid H4S mounted on OEM 15" sawblades. Factory fill is 33F/32R.
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Old 11-02-2005, 09:00 AM   #22
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I just got a set of 18" (upgrade from 17") and I have noticed a drop in gas mileage. I used to get about 9L/100km and since I got the 18s it dropped to 11L/100km. Weight wise, the 17" tire/rim weighed 49 lbs and 18" tire/rim weighs 50 lbs, so no biggie there, but my 17s were at 38 psi and at first I had 18s at 32 psi. Recently, I increased the psi to 34-35 and have noted increase in mpg. Now, my consumption is at 9.5L/100km which is more acceptable for my taste :-) So to answer, in my case, the higher the psi the better your gas mileage will be... Play safely!
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Old 11-02-2005, 04:13 PM   #23
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higher is better for this, but don't go too high. A sharp bumb or a ***** on the tire might cause an explosion. I run my ContiSportContacts at 46 PSI, but they're rated at 51 max. Also, make sure your tires are wearing evenly. If there's wear on the edges of the tire, you're running psi too low and the car is riding on the sidewall. If too high, the middle of the tire will wear out because there's a donut effect on the tire. And changing tires all the time will easily offset the savings you made on gas. Something to consider.
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Old 11-02-2005, 07:19 PM   #24
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Quote:
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44???!!! hope you have life insurance. .lol.. jk
thats true
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Old 11-03-2005, 09:51 PM   #25
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running at the rated 44psi, as of today
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Old 11-04-2005, 10:08 AM   #26
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Quote:
Originally Posted by PoW
running 34 psi (cold)... all in all, get about 310 from a full tank
I'm running 36 psi all round on my 235/45/17s... I get around 22-24 mpg these days, but it all depends on how the person drives and the city/highway mix.
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Old 11-04-2005, 10:08 AM
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