Tires from Costco in Greensboro

funny how we're nearly crossing paths so often, rangerdavid... we're in burlington fairly often! :lol:

hope you like the new tires... we got the michelin energy mxv4+ and we like them a lot.

 

yeah, we got the last 4 in the area, actually.

extra b-ball tickets? we'd have to have some in the first place to have that happen :lol: do alums qualify for the walk-up line? that's the only way i get in... i've been really slack on getting DH's duke card otherwise we'd go more often during the season.

 

<div class='quotetop'>QUOTE(Rangerdavid @ Oct 19 2007, 06:00 PM) [snapback]527995[/snapback]</div>

The reason for that, as everyone who has taken Chemistry in high school knows, is:

1) Unlike every other gas, nitrogen doesn't obey the ideal gas law, and

2) Contrary to popular belief, air is not 78% nitrogen.

 

<div class='quotetop'>QUOTE(Rangerdavid @ Oct 19 2007, 08:00 PM) [snapback]527995[/snapback]</div>

After you get a good feel for the MPG performance, you always have the option of running the pressure up to the maximum side wall pressure.

Bob Wilson

 

Just go to any Costco and have them "fill" them up, way up.

Wayne

 

<div class='quotetop'>QUOTE(FireEngineer @ Oct 22 2007, 11:03 AM) [snapback]528822[/snapback]</div>

You use Nitrogen too? in which tires and at what pressure?

 

<div class='quotetop'>QUOTE(ystasino @ Oct 22 2007, 10:26 AM) [snapback]528835[/snapback]</div>

No I don't use Nitrogen, I have my own air compressor at home. Besides Costco would never fill my tires to the pressure I usually keep them at.

Wayne

 

<div class='quotetop'>QUOTE(Rangerdavid @ Oct 21 2007, 06:30 PM) [snapback]528563[/snapback]</div>

I heard that there is absolutely no harm in adding air to tires that have been filled with nitrogen.

 

<div class='quotetop'>QUOTE(Rangerdavid @ Oct 22 2007, 04:58 PM) [snapback]529043[/snapback]</div>

Ummmm, well......

Hi Rangerdavid!

There is no harm in mixing air with nitrogen, in fact air is ~78-79% nitrogen to begin with (the remainder is mainly oxygen and then trace amounts of other gases). The other poster that mentioned the ideal gas law was likely hoping you might look it up (wikipedia or some other source). I'll spell it out.

Basically, when the Volume of a gas is constant (say, in a compressed gas tank or a tire)....as temperature increases, pressure increases. That's it. The remainder of the equation has to do with moles of gas, constants, etc.

Equation: PV = nRT. (P = pressure, V = Volume, T = Temperature, (R=gas constant and n = moles...don't worry about these).

Filling your tires with Nitrogen, Oxygen, room air, Rocky Mountain Spring Air, Helium, or a complex of Argon, Neon, and Krypton will not affect the above equation NOR will it do anything for your tires....other than provide pressure.

So, don't run yourself ragged trying to find a Nitrogen tank, don't spend any extra time or money on it. Normal air is fine. Nitrogen will do nothing beneficial relative to air. I'm not sure who mentioned that it would be beneficial, but either they were pulling your leg, or they were misinformed.

Anyhow, good luck with your Prius and your new set of tires!

(Me = many years of biology, chemistry and biochemistry)

 

Hi R.D.,

The Hydroedges will take a couple thousand miles to loosen up, and chamfer down all the factory siping edges. Did you notice how noisey they were new? That goes away. That is caused by all the siping edges in the tread pattern.

This is anectdotal, but I think the Hydroedges are worse in rain for mileage, but otherwise the same in other weather, compared to the GY Integrity. The Integrity was a scate board in wet grimy road conditions around here. None of that with the Hydroedges.

Have done better than 58 mpg on all tanks this summer with them in the slow and go Chicagoland commutes. A few times, for a week at a time I have been above 60 mpg. I commute on an interstate, so I do cruise at higher speeds when traffic is flowing. That is the difference between gettting into the mid 60's mpg, and where I am. On my way home from the gas station, 3/4's of the way home from work, I can hit the mid-70's on a special route on the local roads. Its about 5 miles between the gas station and home.

 

Hi R.D.,

I run my tires at 42 / 40 PSI. Wear has been mostly flat across so far. I have had them for about a 15 K miles now. So far, so good. They have been rotated every 6K miles. I set them on the weekend in the morning just before the sun hits them.

 

I gave away the integries when i got the space ship and ordered hydroedge immediately. (Un fortunately the dealer was uncooperative on this)
I had hydroedge on my saturn previously and loved the handling.
Yes, I think you lose a bit on mileage when its wet, but isn't it better to be safe than slide off the road or into the car ahead????
I think they are MUCH more quiet than the integrites
- I work in a noisy enviroment, and any extra road noise drives me nuts...!
I use 44/42 pressure. Have a portable compressor from Sears

what ever- just have a blast!