Dexterity

Hi I am wondering what are the recommended tire pressure to help improve mpg for a 2003 maxima se auto. The car is stock with 17in wheels. I put premium gas in my car. it has about 90k miles on it now.

Thanks.

colt149

iTrader: (1)

32 lbs

Derrick2k2SE

iTrader: (3)

Stick with the recommended pressure. maybe one or two PSI over.
Over inflating your tires will help with mileage but it will hurt the handling/safety and eat the tires. It will cost you far more in tires than you save in gas.

If you're trying to micro mileage, you should look into doing the 17degree timing advance. Look it up. I saw a 10% increase in my mileage after doing it with regular driving. You'll probably see better since you spend more time at part throttle and low RPM where this mod is effective.

mclasser

In the fall & winter, I run 33.5-34 PSI tops. This helps account for any rapid temp drops and means I have to check the tires less.

Rest of the year is the spec'd 32 PSI.

Dexterity

Thank you all. I will run it around 33psi in the front and maybe 35psi in the back for now.

ateick

iTrader: (1)

I can't tell what trim your driving bit the SE recos 35psi front and back.

Child_uv_KoRn

iTrader: (7)

You have that reversed

george__

iTrader: (1)

17" rims = 33 psi
18" rims = 34 psi

Dexterity

its a 2003 maxima se so I should have 35psi all around?

Dexterity

isnt the car front wheel drive which means the front tires will get more warm and the psi will go higher while driving?

Dexterity

thanks

foodmanry

iTrader: (15)

No, typically you use a higher pressure on the higher weighted end of the car (front or rear). In the case of Maxima's (front engine and front drive) you want higher PSI in the front if you are going to be using different PSI front versus rear.

Under inflation will generate more heat and cause faster tire wear.

Donkeypunch

I like to do 40psi because the hypermiling plus turning is nicer compared to the 32 Nissan wants you to run.

Child_uv_KoRn

iTrader: (7)

That's pretty irrelevant. You need more pressure in the front b/c there's a lot more weight on them. IIRC, it's only .1 PSI for every 10 degrees.

Dexterity

oh okay. I will inflate all 4 to the same, 35psi.

Dexterity

is it good to inflate all 4 tires to the same psi?

Dexterity

40 seems a bit high for me but I may try it in the future.

ateick

iTrader: (1)

Yes. Flip the lid open on the armrest. The reco pressure sticker is located there.

Donkeypunch

Those labels are cold psi so if you want to be **** do at the coldest times you think
you're going to drive the car. It'll go up like 2-3 psi when it gets hot out.

http://en.wikipedia.org/wiki/Cold_inflation_pressure



http://www.goodyear.com/cfmx/web/cor...y.cfm?a_id=371

http://www.tirerack.com/tires/tirete....jsp?techid=73

Harquebus

Depends on the tire's rating. My touring tires are designed to contain up to 44 psi but I routinely run 40 psi. Don't just go with the tired old standard of 35 psi, do research.

Every little bit of rolling resistance I can reduce, if ever so slightly, is a bonus.

Good info there on tirerack.com. Always check and fill your tires cold if possible.

Child_uv_KoRn

iTrader: (7)

I would spin and slide all day long at 40 psi and that's dry weather

Donkeypunch

get better tires.

Child_uv_KoRn

iTrader: (7)

That's not going to matter with square inches of tire patch gone

maxiiiboy

I have been running 36 psi on my 2000 SE with 225/50-17 tires. I increased my tire pressure after I noticed that the tire shops would routinely inflate my tires to 38, even 40 psi, and the car felt good. My experience is that the car people recommend less (32-34) and the tire people recommend more (36-40). Higher pressure is better for mielage, lower pressure for comfort. So suit yourself, as long as you don't exceed safety margins.

Donkeypunch

Back in the 90s firestone was oem for the ford explorer.
firestone recommended what they felt was safe but ford wanted a lower
pressure of 26psi for comfort. I had one of these explorers, they're actually a rough ride.

But anyway, they overheated and blew the freaking tire because what ford recommended plus a crap tire.

I'm just saying why should people trust the psi sticker nissan puts on
why do they recommend that specific pressure? They tell you to put in more pressure if it's loaded down but why not keep it that way always?
Comfort. Not tread life or grip.

Unclejunebug

I'm not so sure "Hypermiling" and "Maxima" really belong in the same sentence

Child_uv_KoRn

iTrader: (7)

And the Ford execs got away with murder. Literally.

dwapenyi

iTrader: (3)

Hypermiling a 255HP V6 performance sports sedan?

What next, hypermiling a Bugatti Veyron quad turbo W16?

Prophecy99

iTrader: (1)

43 psi here

NmexMAX

iTrader: (22)

Buy lightweight wheels, they'll pay themselves off and then some.