Tires pressure.
 

Hi Friends,good morning...Nissan told us to put 35 psi of pressure to our tires,last week,i tried 40 psi,i felt the higher pressure 'suited' the car better,sharper handling,less tire noise & better fuel economy,only disadvantage is a more choppy ride...so has anyone do the same.?Thanks.

On the "jam" of the doors is a stickers that indicates the recommend PSI by the company of the car.

:iagree:

You can put whatever you want up to the max pressure. Best way to do it in my mind is to play around with different PSI until you find one that feels best. For instance, on my old RSX I liked to run about 31 PSI because anything higher and the tires would lose traction to easily and it felt better suited to my suspension setup. On the Z Ive found that, for me, the best pressure is around 35-36PSI, anything higher, like around 40, and the rear breaks loose to easily, but the handling feels more stable.

Personal preference really.

I know that,but i tried 40 PSI & feels better,i wonder any people here pumped 40 PSI to their cars.?

When I picked up the car it had 45 psi and it was a very rough ride. I have 35 now which gives good traction as well as a smother ride. I may try a little less to see how that feels.

When I picked up the car the dealer didn't adjust the pressure from when it was shipped from Japan, so it was at about 45 psi. I didn't like it one bit, a bouncy ride. Adjusting the pressure to factory spec made a world of difference, more comfortable and better handling so I'd say stick with the factory specs.

I run 36.5 front and 35 rear in the Z. Handles great. STi was happier with 37.5 front and 35 rear, but it was more front heavy than the Z.

Better economy is coming at a sacrifice. Potentially higher tire wear (not using the tire surface evenly) and potentially of braking performance--the easy two sacrifices.

I would rather get 2 fewer mpg then have to buy a front bumper because my braking distance is increased in an emergency situation. Do a search on the risks of "hypermiling", most have a section on higher tire pressures.

You can do what you want and likely you will never need to use the brakes at their max on the street. But to me, the risk ain't worth it.

^good points

i usually just keep adding air till i hear the tire expanding. that lets me know its full:icon23:

sorry to jack your thread, but my tire pressure is at 35 and the tire pressure warning is on saying "check tire pressure" ?? wtf

it normally takes a few miles to recalibrate. :tiphat:

its on for a couple days now, i see it everytime i turn on the car !!:confused:

make sure the pressure is at the recommended 35 psi, and if thats the case you might have a bad sensor

If thats the case, would the dealer replace without charges ? do you think ? my car is brand new, not even 1k yet

Yes warranty, they would probably reset the ecu to see if it clears it, if not they'll replace what ever sensor is causing it.....

TPMS sensor on one of the tires may need a re-set.

YOu are driving it and not just turning it on, right? Takes a few miles.

Yeah, or a simple reset on the sensors as noted above. Dealer, or any tire store can do this for you. It's about a 5 minute job

wow daily double Modshack

Fat fingers and a Yuengling...:tup: (fixed)

When I brought my car home from delivery, I checked the pressure and it was 40 PSI and I attributed it to idiots at the dealership not knowing what they were doing when they prepped the car. I immediately had the pressure adjusted to the numbers on the jam and have kept it that way since simply because I assume the Nissan people know best. But now I'm going to say the dealership set those pressures at 40 not out of incompetence but for a reason. I like to give people the benefit of the doubt.

Cause they couldn't read the door Jamb sticker?

Seriously, most car and tire combination's have a sweet spot they work best at. Different tires than engineered and spec'd on the car may have softer or stiffer sidewalls that may require a change in the pressures. IMO the factory recommendation with these tires are pretty spot on. Raising them to 40 will result in a reduced contact patch, sketchier braking and traction, and odd tire wear patterns.

The Tyre Bible is always a good read if you haven't done so:
Car Bibles : The Wheel and Tyre Bible Page 1 of 4

Wrong, NOT any tire store can reset the TPMS on the Z. The Nissan dealer has to reset it.

You must be hanging out in the wrong tire stores. This is not magical technology available only to Nissan. Others have had this done at (well equipped, up to date) tire service facilities.. In fact there's a friends Z sitting on my garage lift as we speak with new wheels, tires and TPMS sensors assembled at our local tire store and all is working just fine..

Wait, you can turn the tire pressure warning on? I didn't touch anything. It came on one day. I check the pressure and got them up to 35 psi and it's still there. Didn't happen with my TL. I guess I have a bad sensor :(

i run 37.5psi on my hobby cars. both have recommendation of 35psi but it's too mushy for my motoring needs.

in the winter time when i hiberate the cars, i usually put 40psi or more to compensate for the colder temps inside the garage in the winter. about 1psi per 10F change.

That's doorjamb.

Fine... Be sure to point that out to them next time you're at the dealership...

Folks that don't know much about cars are regularly put at risk by bad set-up practices. 45 psi in the tires, Spring shipping spacers not removed, wrong locking lugs installed....I could go on and on..

I always put an extra 2 psi in for fuel efficiency.

I recently purchased a good tyre pressure gauge... many of our local service station air pumps have wrong readouts... but they're consistent at least... My preferred place always has a 1 psi difference to my gauge... dunno which one's right... =/ don't know if it makes a difference...

I was going to raise an exact same thread on this. The recommended tire pressure is indeed 2.4 bar but somehow I find this abit twitchy on our roads and actually like it when I pump it to 2.6bar. It feels stable and suprisingly planted compared to 2.4, weirdly.. it should have been the other way round I would've thought..

i just put the recommended 2.4 bar

right tired was 1.1 bar for some reason

hop that the tire isn't leaking -_-