What's the proper tire pressure on stock 18's?

 

http://www.tirerack.com/tires/Spec.j...um%3D445VR8RSA


Max presure is 44 psi. Everybody has their preference. I think 32 psi is what the dealer installs at.

 

It should be on the sticker of your driver's b pillar for stock 17 and 18 psi.

 

maybe if you want really bad gas mileage. i wouldn't put less than 32 in them.

 

i have mine at 34 psi.

 

35 for me !

 

look under the armrest in the center console compartment there is a sticker. at least on mine there. is i think it says 32

17 PSI is WAAAAAY TO LOW. the inside of your tires probably have rubber shavings all over from the side walls shedding under cornering from tire stretching and what not

 

Sorry I meant stock 17 inch and 18 inch psi# is label there.

 

32psi, dude.

 

My recomended tire presure sticker is located on my center console glovebox!!!

 

32 psi for me to.

 

lol at dude saying 17 and 18 referring to the 2 wheel sizes and everyone thinking he meant psi

like everyone stated, it's on the console, plus the manual. that temp is cold (in the the morning before driven)

 

I looked inside the console and for 17's is 33, but nothing for 18's. Thanks guys I guess i'll leave them with 33

 

i have mine between 32-34 PSI...

 

Oh no!! Not another tire pressure thread!!! Which is worse, octane threads or tire pressure threads?? My tire pressure is 40 because I like it like that and the tires wear nicely at that level and you get better mileage . . oh and you get better handling . . . . . oh and ur steering is slightly lighter.

 

Yours handles better at 40 than 32? hmm not for me, but whatever works for you i guess. I do agree with you about the lighter feel and gas mileage. but I'd rather have it more sticky.

 

Warning: You are likely to wear the tread on you tires much faster in the center than on the sides of the tread.

In my discussion, all tire pressure readings are made after the car has been sitting for at least 12 hours -- thus the tires are considered "cold." I ran my tires at 36-37 psi for about 7 K miles. At that point, the center tread then showed substantially higher wear than the sides of the tread. I went back to 32 psi, but the damage had already been done to all 4 tires. I ended up replacing my tires about 4 months and 5 K miles earlier than would likely have been the case had I stayed with the Nissan recommended pressure of 32 psi.

I now watch the pressure and keep them all between 31 and 33 psi -- with a goal of 32.
I watched the gas mileage when running the higher tire pressure, but did not see much if any improvement.

 

As I indicated, my tires wear very evenly at 40 psi. In fact, in competition, I pump em up to 45 in front and 42 in back and goodbye understeer!!!

 

i put 32-34 on mine.

 

I usually keep, 32-34 in all for corners checked cold, during the summer months with 32 in the tires the heat increases the pressure up to 38psi so just keep in mind what kind of driving you do

 

Agree. Depending on the outside temp, the actual tire pressure after 1 hour of highway driving will easily be 38 to 40 psi. This is why it is so important to measure the pressure when the tire is cold. I have to drive about 2 miles to get to the closest (free) air compressor. By then, the 32 psi has already increased to 34-35 psi. So I determine, when the tire is cold, how much air I need, and then add that when I get to the compressor.

 

32 seems too less for me..

I have mine with 34

 

Yeah you're running different suspension and tire width specs from factory, so the factory psi recommendation doesnt apply to you anymore. It's whatever you're comfortable with.

 

Even with stock suspension and tires, Id still pump them up to not less than 35 and probably more like 37-38.

 

Look inside of your drivers door there is a label for tire pressure.

 

OK, check this out. I had my oil changed Saturday and spoke to the owner (an ASE mechanic) about uneven wear on my front tires. I figured I needed an alignment which they offer but he told me that the issue I was having was due to under inflated tires. My front tires wear a bit faster on the outsides but only the outsides. It's not even or a sloped wear pattern. I was positive he would sell me on the alignment which I thought I needed anyway but he told me it wasn't an alignment issue. He bumped the tire pressure to 40psi and said that should take care of the issue. I have 25K on the tires now and they're in damn good shape. Also, the car seems to drive better at the higher psi. I was running at 32-34psi.

Does this sound right to you guys?

 

That is possible, but I doubt it. Nissan goes to some care selecting the correct cold tire pressure for the tires on their cars. This pressure should give correct tire wear (across the whole tread of the tire) for most drivers.

I suspect (not having seen your tires -- but only what you have written) that what you are seeing is likely a combination of slightly out of allignment wheels along with the wear that comes from cornering fast.

You don't say what the wear has been on your rear tires -- or when you last rotated tires from front to back. That, too, can have an impact on tire wear.

But if you can run your tires at 40 PSI cold and not wear the center of the tread much faster than the sides of the tread, you certainly should get better gas mileage than those of us who need to stay between 32 and 34 PSI to get proper tire wear.

 

Rear tire wear seems completely normal. I've rotated twice since purchasing the car 25k ago. I drive fairly conservatively day to day, but on the weekends a play a bit. I'll keep a close eye on center tire wear with the inflated pressure. I definitely notice a difference in handling especially with the steering. It's obviously a tad more sensitive but nothing crazy.

 

You should be rotating tires on your Max at least every 10 K miles -- and every 5 to 7.5 K miles would be even better. I roatate my tires every time I change motor oil -- which was every 7.5 K miles until the extended warrenty expired. It is now every 10 K miles.

With tire rotation, it is often harder to notice that there is a mis-allignment of your wheels. I did not catch that my rear wheels were out of allignment until it was too late -- there were cups worn in the tread of the original tires that were there until I replaced them. If you have not had the wheels alligned in 25 K miles, I would recommend that you get an allignment -- at a place with the most modern allignment equipment. (Here in Colorado Springs my dealer has this equipment, so I go there.)

 

Um...I said I rotated them twice in 25k. Each at 10k.

I noticed the slight outside wearing at the first rotation. When the rears that I brought to front starting showing it was when I spoke to the mechanic. Again, it's only the front that are wearing this way. It's so slight that I'm going to see how the suggested 40 psi works. I have plenty of life left in them.

 

i keep mine at 34 psi

 

...anything in the mid 30's is good....have to check around winter time also, because they tend to get low when it gets cold....temp goes down, air pressure tends to follow.