NAH Tire Pressure
#11
Re: NAH Tire Pressure
I reset my tire warning all the time. All you need to do is make sure all the tires are above the lower limit (35 I think) by filling/checking each tire. (only doing one tire may not work) Then you need to drive over 16 MPH for a few minutes without stopping and the light will reset. It is on page 2-13 of the 08 manual. (In my experience, driving over 25 MPH for a minute or two always works.)
Well it looks like there is something wrong with mine then. I definitely satisfy those conditions, but the sensor won't turn off on its own... Off to the dealership I guess.
#12
Re: NAH Tire Pressure
I had my 3 month service in late October, and I noticed they filled the tires with Nitrogen (or at least they added stem caps with an "N2" on them). My low pressure light came on about 2 weeks ago. When I checked, most of the tires had dropped below 35 psi. I took some of the recommendations and increased the pressure to around 42 psi. The light went off and I've noticed a small bump in my fuel economy since then.
#13
Re: NAH Tire Pressure
So, I've been running my tires at 44-46psi for the last few months.
However, I'm thinking about reducing the pressure in at least the front tires after not being to get up my snow-covered driveway last night.
I know that, with higher pressure, there is less tire contact (surface area) with the road. But, has anyone done any calculations with the NAH as to when you get maximum contact/traction?
I guess I'm looking for the "winter sweet spot" for front tire pressure. Any guesses, or better yet, empirical data?
Thanks,
Eph
However, I'm thinking about reducing the pressure in at least the front tires after not being to get up my snow-covered driveway last night.
I know that, with higher pressure, there is less tire contact (surface area) with the road. But, has anyone done any calculations with the NAH as to when you get maximum contact/traction?
I guess I'm looking for the "winter sweet spot" for front tire pressure. Any guesses, or better yet, empirical data?
Thanks,
Eph
Last edited by cephraim; 11-25-2008 at 07:37 AM.
#14
Re: NAH Tire Pressure
Eph, Not sure if lower pressure will be the cure. Yes on sand and mud lower tire pressures will allow better traction, only because the surface area of the tire is wider and will travel on top of those mediums. In snow however, the idea is to have a narrow footprint which allows the tire to dig into the snow and reach to asphalt. I have experience with both. My 4x4 always did better on sand with lower psi, but not as good in snow. I do think that the narrow footprint on snow in a highway setting may be more dangerous. The only way to get absolute results would be to test both and on the same patch of snow. Seems like a bit of work, but worth it. I dont have snow yet, so you will have to test.
Thanks from all of us in advance.
Good luck.
Thanks from all of us in advance.
Good luck.
#15
Re: NAH Tire Pressure
Eph, Not sure if lower pressure will be the cure. Yes on sand and mud lower tire pressures will allow better traction, only because the surface area of the tire is wider and will travel on top of those mediums. In snow however, the idea is to have a narrow footprint which allows the tire to dig into the snow and reach to asphalt. I have experience with both. My 4x4 always did better on sand with lower psi, but not as good in snow. I do think that the narrow footprint on snow in a highway setting may be more dangerous. The only way to get absolute results would be to test both and on the same patch of snow. Seems like a bit of work, but worth it. I dont have snow yet, so you will have to test.
Thanks from all of us in advance.
Good luck.
Thanks from all of us in advance.
Good luck.
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