Oxygen

My is almost always on the "DISTANCE FROM START" or the digital MPH display.

Sometimes, but rarely, I use the RADIO controls.

ssonss1

99% of the time radio controls

LAWYER2

I always toggle to MPH, hate seeing how many miles I've racked up!

02S430

+1 or mpg

~CL500~

Most of the time, radio presets. In the CL, I'm stuck with "WARNING! SEAT BACKREST LOCK, LEFT SIDE!" because my seat position switch is faulty. I'll eventually get to fixing it.....

Quadcammer

99.9% of the time im at mileage. I only scroll through the other stuff when I need it.

MRAMG1

Mileage or speed here.

But I offten like to scroll around tp pass the time.

See yeah

ssonss1

press the "R" on the right of the cluster in the cl to clear the error. At least on the Canada models.

newton22

Yeah, speed because I can just glance down to see how fast I'm doing. I don't care for any of the other fancy stuff.

m4xm1l10n

Radio!!!!

~CL500~

Thanks for the suggestion. I tried that early on and it didn't work. Interesting though that it works on the Canadian models.

Gondon

MPH

2strokepwer

trip start- ave mpg, time, ave speed

Skylaw

It's situational for me.

Usually, it's audio monitoring (which is most often my iPod), so I can switch tracks using the steering wheel. When using the nav system, the nav display, mostly for information on distance to the next action point.

On a long trip, the trip displays, and especially miles remaining until empty.

Jezza

If i am using the nav i'll have it showing nav insutctions. Otherwise i always have it on the "After Start" screen.

QuadBenz

I usually have it on the trip info or the mileage screen.

turncoat

LOL...I am the only one who uses tire pressure? At least the first few minutes. The tire pressure and temp are closely related, and cold Bridgestone RE050s are awful...esp on my favorite on-ramp.

Also like the "range" display, it is quick to respond to throttle changes on the highway (i'd say it's a 30 second average), and since i commute it can make the difference in making it to work or stopping for gas.

Oxygen

I changed a few settings on the IC using SDS and my range screen displays both the range in miles and also the amount of gasoline in the tank in gallons.

Skylaw

No, you're not - I like it too, and use it especially when there are long-lasting temperature changes. It's fairly accurate. I have a tire pressure gauge that reads out in tenths of a pound, so I can be accurate in filling to 29 and 32 front/rear to calibrate the system (full reset). Once that is done, the system does pretty well - accurate to within a pound.

Having just put new tires on the car, I have been using the TPMS readout a bit more than usual, but normally don't find it necessary more than every few weeks.

As an aside, I had the new tires filled with "pure" nitrogen; supposedly they filled/extracted 5 times to get rid of as much oxygen and moisture as possible. The nitrogen supposedly maintains pressure longer (the theory is, larger molecules leak less) and 100% nitrogen doesn't result in temperature swings as large as air (78% nitrogen, 21% oxygen), especially moist air. Frankly, in highway driving I don't see the benefit regarding pressure changes due to temperature. They change just as much as my old tires (filled with air) always did. The jury is still out on maintaining proper cold inflation pressures for a longer time.

MRAMG1

Ah hate to tell you but Nitrogen is approxiametly the same size as an air molecule. The theory, or fact, is that your tire pressures will stay MUCH closer from cold to hot when using Nitrogen. Point of fact, I run 32 F and 28 R, cold, and at highway speeds this relates to 36-37 F and 32 R with air.

Sorry for the bad news.

PS: VERY few racing bodies use Nitrogen, as VERY few drivers could tell the difference. For a street car, it is a waste of money IMHO. Heck we didn't use nitrogen in the SCCA, Formula Fords, World challange series, Iron series, etc,etc.

Formula 1 and Indy, YES. Afterall these are the pinacle drivers

See yeah

PS: An short read from Toyo tires "At this point we have little factual data at hand to positively promote nitrogen gas inflation, but there are no negative aspects either, from the standpoint of tire performance."

Skylaw

First, what I have cited is the "sales" line. I'm evaluating it (some of it I already know to be blatant hooey).

Second, there is no such thing as an "air" molecule. Air is 78% Nitrogen, 21% oxygen, and 1% a variety of other gasses. Obviously, the Nitrogen molecules in "pure" Nitrogen and in air are exactly the same. The Oxygen molecules are smaller than the Nitrogen molecules, and in theory, in an air mix they would escape sooner than Nitrogen. That's the sales line, and that's what I'm waiting to see.

The other claim, that I have not seen borne out, is whether the tire pressure will increase less with "pure" Nitrogen than with air, both starting from the same cold pressure. So far I have not seen any improvement with Nitrogen, but I haven't made any long trips at 70 mph. I have a long road trip in a few days, so we'll see. Running cold pressures of 29 front and 32 rear per manufacturer specs, my "air" filled tires used to reach 34 to 35 front, and the rears 36 to 37 psi on a long trip at 70 to 80 mph cruise. I seem to be getting similar readings on the short trips with Nitrogen.

So, no bad news. It cost me $2.00 per tire to try the Nitrogen when I got new tires. No big deal. But I agree that it is looking like something I won't continue. Too much of a pain to get them topped off, for too little if any benefit - especially when I have a nice electric pump in the garage right next to the car.

whoover

There are two scientific bases for using pure nitrogen. One is that, as Skylaw states, air has a mix of molecules. Oxygen molecules do pass through rubber more quickly than nitrogen molecules even though they are heavier.

http://www.getnitrogen.org/pdf/graham.pdf

This is why tests show slower leakdown for nitrogen-filled tires.

http://blogs.consumerreports.org/car...nitrogen-.html

The other reason is that air contains a fair amount of water vapor. Water does not leak out rapidly, but its pressure is more affected by temperature. Obviously, if cold enough, a cold tire will have lower pressure because of internal condensation. So temperature stability of pressure is enhanced using nitrogen, but could be replicated with drier air.

On the other hand, both of these effects are relatively small. There's no substitute for checking your pressure often. Nitrogen allows you to be a bit lazier.

Skylaw

- since I am in (humid) Florida, one issue is - how much water vapor exists in the "pure Nitrogen" fill - since the tire cannot be fully evacuated when it is first filled with Nitrogen. Second, as you point out the effects are small (they certainly seem small to me at this point).

MRAMG1

Glad to hear you didn't get hosed

Hey, I REALLY wasn't tring to come off as a jerk to you my friend. And judging by your feedback you certainly know what I was refering to. I just HATE to see members on this forum WASTING thier money. Don't read into it anymore than this.

See yeah

Skylaw

You haven't, and I certainly don't take it that way. I have enjoyed your other posts - and this string, too.

I'm aware of the formulas for gasses too - but hoped the Nitrogen treatment could get a "dry" enough fill in place (after the several evacuations and re-fills they said they performed) to make a difference. Oh, well.

Like you I do think the Nitrogen fill is a waste of $$ for ordinary highway driving. I agree with whoover, and surmise that you would too, that ordinary air and more frequent checking of tire pressures is as good as (and less expensive than) the Nitrogen fills - which at some locations here, go for $60.