Hi,

I have a 4th gen max with 5th gen 17 inch tires. I looked in the faq and only saw psi for 16s. Can someone tell me what it should be for the 17s? Thanks!

Sam

 

Sam, it should say on the sidewall of the tire which psi you can use. I have the OEM 17's, and run 34psi on all 4 tires.

 

Nissan says to use 32psi all the way around, but I usually mess around with mine until they "feel" right. Mine are currently set at 33psi front and 35 psi rear

 

-factory recommendation is 33psi-front & 29psi-rear on cold tires.
The difference in psi between the front and rear is to compensate for the weight distribution of the car.

 

It must be dependant on the year and style of the tires (SE, GLE) b/c mine say 32psi for all four on my '03 GLE.

 

Quicksilver

On my 2K3, I was running 32 psi. I bumped it to 35 psi all around. It felt a little tooooo darty today on the interstate. I will drop it to 34 psi in the front and rear. I may go 34 in the front and 32 in the rear. Keep the rear end lower than the front end for better handling.

JUST GOT MY SPOILER PUT ON MY 2K3 GLE TODAY! IT LOOKS GREAT!

Thanks

Vic

 

i have been running on 36psi for all 4 and saw a slight increase in mpg... Im starting to avg 25.5 mpg..

 

Is this around town or highway? I can get about 25 in mixed driving with mine aired to 33 all around. I have wondered if I should air down the back tires because of the lower weight there though.

 

I'm running 38psi right now on stockers.

 

I believe the sidewall pressure is the absolute maximum that the tire can safely handle -this is almost way more than what the vehicle mfr. recommends.

I run 34 on all 4 ( the recommended psi for 2K1 SE, 17" is 32 all four ).

 

running 34psi all around...

 

I also.....34 PSI all round.

 

Isn't that dangerous? The pressure will rise when the tires heat up...it will exceed 44psi (max. pressure for most tires). I am curious to why you are running so high on tire pressure especially on stock tires? I don't think you will gain much in performance except for maybe a little better gas mileage/bumpier ride. Overinflated tires will effect the way the car handle. Is that why you do it?

There was an old thread that discussed about the tire pressure issue. It was a long intensive debate, remembered?
Too bad the search function is disable or I would have pasted the link FYI.

 

34 PSI isn't that much difference, so over inflation should'nt be a problem. As for why I do it anyway.......because I feel it handles a whole lot better tham the factory specs. Anyway, I don't have the stockers on right know.....switched them out for my summer wheels

 

Handling, gas mileage, less bubble. They aren't stock tires. I meant stock wheels. They're relatively new Nittos.

With my 18"s, I actually run on 42.

 

stock 17's with yokohama rubber... 38 front, 36 rear...

a bit higher pressure keeps me from denting rims when i hit a pothole (at least, not so often) and helps gas mileage a bit (like i really care - i'm not exactly a fuel-efficient driver )

tire people told me not to expect psi to rise more than 2-3psi based on heating up. so being 7-8 below the limit is well within the safe zone.

 

I have a stock 2k3 SE with the Potenzas.

The center console sticker says 32psi, and the tires say 44psi. Came from the dealer with 42.5 .

Is the senter console wrong?

 

stock 17's with Yokohama rubber ... 36 front, 34 rear.

 

its mixed. Highyway and town. I was running 32's, but i was getting like 23~24 mpg. Since I bumped it up to 36's.. it's up 1~1.5 mpg. Not much, but it's an improvement.

 

No, the console is pretty much right on. Inflation pressures marked on sidewalls of tires refers to the maximum pressure (taking into account possible temperature and load). It should not be used as the basis for what to cold inflate to. Always double check tire pressures after purchasing a car or new tires...don't trust a dealer or shop to have it right.

 

Here's my solution:

http://www.autosportcatalog.com/index.cfm?fa=p&pid=819

I check my tire pressure once a week.

 

With every other car I've had, the sticker on the car has matched the max tire pressure stamped on the tire. Why doesn't this match?

 

What car(s) were these?

Specs for stock tires are:

http://www.tirerack.com/tires/Spec.j...l=Potenza+RE92

and here is more info...

http://www.tirerack.com/tires/tirete...l/pressure.htm

 

Mustang, Volvo 240, Jetta, Grand Caravan...

I was going to post the TireRack information also. It says 44psi for the stock tires. The center console says 32psi.

The Ford Exploders were shredding tires because they were rated at 32psi (or something like that) and the placard in the vehicle said 26psi (to "prevent" rolloevers).

Do other people with 2k3 SEs have the 32psi placard in the center console?

 

Yes...my 2k3 GLE has 32 psi.

Vic Vogel
I GOT MY NEW SPOILER!!

 

That is the difference between 'RECOMMENDED' and 'MAXIMUM', there is a world of difference. Did you read some previous post in this thread and the second link I posted? If you are already at maximum pressure for the tire and then it heats up, good luck and I hope your life insurance is paid up.

 

No. Dealers can be idiots. Mine came from the dealer with 39 all around. I was actually surprised. They tend to air them down a bit for a smoother ride.

 

Ok, unless I am reading this wrong, you consider 39 to be 'aired down'? Or did I miss this?

 

Mine has the 32psig placard. If I remember correctly, you should run tires at the max sidewall pressure if you are going to be operating them at high speeds/loads for a long period of time. And it is OK to do so gbecause there is still about a 10psig margin above the max pressure to allow for heating effects.

 

Do as you wish.

Also, where on earth did you ever read..."is still about a 10psig margin above the max pressure to allow for heating effects." This MAY be true in certain light truck situations for towing or heavy bed loads, but not passenger cars.

If you haven't read TireRack's info, maybe you want to read this...

http://www.tiresafety.com/service/serv_nav1b.htm#

Notice the 'However, for passenger tires, never exceed the maximum inflation pressure molded on the sidewall.'...and remember, this is based upon a cold fill. Drive a bit and you are already over.

 

I'm not advocating exceeding the max pressure. I'm just saying that 12 pounds less than the max seems too low. For the Max.

If I bought the Pilot A/S, which are rated at 51psi max, what pressure would I use? 50? Something in the 40s? 32psi? How would I know?

If you put the blotenzas on another car they fit (Acura?), would you inflate them to 32psi? Probably not.

 

Have I not answered this more than once.

Use the VEHICLE RECOMMENDED PRESSURE. Then make your adjustments.

What is this fixation you have with maximum pressure?

 

You would think that that ~100 people dying from the combination of a tire defect AND improperly inflated tires would have settled this question once and for all. Use the recommended tire pressure listed in the center console.

BTW: 32 psi is the correct pressure for 2002. Mine came with 38 psi. They did lose traction easier on wet roads.

 

Uhmm. The recommended tire pressure for the Explorer was too low and caused the tires to overheat at high speeds and shred, causing roll overs. People who followed Ford's recommended tire pressure died.

That being said, I'm going to take jjs's advice and let 12 pounds of air out of my tires because if something is written, it must be true. Never question anything you read. It must be right.

Sorry for the sarcasm, but I'm just trying to undersatand the relationship between recommended pressure, max pressure, and what my tires should be at.

 

Wow, I actually did not know that Ford had recommended pressure that was too low. I am as big a skeptic as anyone, but assumed that a recommended tire pressure from a vehicle manufacturer would be correct. I figured that they had some statistical evidence to back up their numbers.

I guess the best method is to start with the recommedation under different conditions, then try other pressures as well.

 

As a former owner of a 1995 Ford Explorer, I would like to defend the car and its basic chassis.

It was no more unstable than say, a 2003 Nissan Xtera, or any Mitsu SUV. Some of those accidents were caused by OVERLOADING OF PASSENGERS. In one case, they had 7 people in one when it flipped. Tire pressures are important-running them under the 26 lbs/sq in is a serious problem.

I ran mine at 32 to 34 lbs and never had a problem.

Now...Let's get back to Maximas.

Thanks

Vic

 

You misread what I wrote. I never said to go above the max pressure. I said that when you are at max (cold) tire pressure (for whatever reason), the tire can and will heat up more after you start driving and that is OK because there is an approximately 10 psi safety margin there.

 

You are reading it wrong. Mine came with 39 all around. That is, they were aired up. I was surprised because dealers usually either air tires down (read this as less than manufacturer recommendation) for a smoother ride or they just don't look at the tires and they air down on their own over time.

 

Another method to ensure the tires are aired correctly is to go to a parking lot (or where ever) that has black asphalt. Mark your tire treads with white chalk, and drive a few feet. You should see a uniform mark on the asphalt. If not, air them up or down accordingly. This will get you pretty close to the proper inflation. Of course this will change as you add load to the car.

 

Yet again (and not to beat this to death, but to let others who read this thread know what is correct), wrong.

Maximum is maximum. Period. Not to be exceeded.

As for your magical 10psi buffer, this is true for light truck tires, not passenger tires. Paragraph 4 of my link. At it should be noted that this is often to compensate for heavy loads or towing (I know this as I also own a truck and am familiar with recommendations for it).