Tire pressure question

[Zlakin]

The recommended tire pressure for your car is between 32 to 35 psi. The tires bear the weight of your vehicle. Consequently, tire pressures should be adjusted accordingly, increasing them in areas where there is more mass to support, such as the front and rear. Following this reasoning, higher tire pressures should be set in locations where your car's heavier components, like the engine and transmission, are situated.

 

[fasin8]

Mine came with nitrogen filled tires is it worth keeping them filled with nitrogen or regular air?

 

[EdP]

Mine came with nitrogen filled tires is it worth keeping them filled with nitrogen or regular air?

I use a blend of gasses. It consists of 78.08% nitrogen. 20.95% oxygen, but most important, it has .93% argon. some other less important gasses to round it out.

For most of us, that dose of argon is important for the road.

Are Nitrogen-Filled Tires Worth the Cost? - Les Schwab

Wondering whether nitrogen-filled tires are worth the money? Here’s your answer.

tinyurl.com

 

[GeeVee7T]

Mine came with nitrogen filled tires is it worth keeping them filled with nitrogen or regular air?

In case it wasn't clear - the main benefit of Nitrogen is that it doesn't shrink when it gets cold like normal air can (especially that 0.93% Argon as EdP mentioned... very tricky to get that perfect balance... ). Other side benefits are no water vapour, non-reactive gas, and minimally less seepage.

If they are already filled with Nitrogen, then you have those benefits helping to maintain a consistent tire pressure. If you top it off (from eventual seepage) with regular air, it will slowly deplete that benefit. So if you need a top-up and have handy access to someone who can do it for you, great, if not - correct pressure is better than maintaining pure Nitrogen. "The leading cause of tire failure is incorrect pressure."

 

[dhuhtala]

I live in a small town where no one can add Nitrogen so I always just add regular air with no issues. I don't see much leakage with regular air - and the temperature fluctuates between -40 and +35 (Celsius) here.

 

[EdP]

I live in a small town where no one can add Nitrogen so I always just add regular air with no issues. I don't see much leakage with regular air - and the temperature fluctuates between -40 and +35 (Celsius) here.

Don't you feel guilty that some car dealer or tire shop is not making a lot of money by selling nitrogen to you?

How much does it cost to get nitrogen in my tires?

Beyond the cost of tires for your vehicle, if you're considering a nitrogen fill then you can expect to pay about $80-$150 per tire for the initial fill up and air conversion. After the initial cost, a refill will range between $5-$7 depending on your market.

 

[Newfan]

Don't you feel guilty that some car dealer or tire shop is not making a lot of money by selling nitrogen to you?

How much does it cost to get nitrogen in my tires?

Beyond the cost of tires for your vehicle, if you're considering a nitrogen fill then you can expect to pay about $80-$150 per tire for the initial fill up and air conversion. After the initial cost, a refill will range between $5-$7 depending on your market.

what's the benefit of N2 fill? At that price one can almost buy a new tire. Is it a scam? Air is 79% N2 if I recall from my high school chemistry days.

 

[dhuhtala]

Ha ha...no, I've never paid for nitrogen. I hear it's a thing with dealerships in the US though.

 

[fasin8]

Don't you feel guilty that some car dealer or tire shop is not making a lot of money by selling nitrogen to you?

How much does it cost to get nitrogen in my tires?

Beyond the cost of tires for your vehicle, if you're considering a nitrogen fill then you can expect to pay about $80-$150 per tire for the initial fill up and air conversion. After the initial cost, a refill will range between $5-$7 depending on your market.

Costco offers Nitrogen filling stations for free. Found one about 10mins away from my house.

 

[Slip_Angle]

Tire pressures impact handling. The suspension will be tuned a specific way depening on the tires installed on the car and how the suspension is setup. Doesn't mean you can't change them but do expect handling could change. IE: If you are 36/39 and bump the fronts to 39/40, you may experience more understeer.

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[luck11]

When I had my conti's installed on my 21" aftermarkets, the shop told me they inflated at 40 psi. He said generally he prefers a higher pressure, but said I can go lower to recommended if I don't like it. I actually prefer it.

 

[Husky]

Depending on how much higher than recommended that is, you may also wear out your tires a bit prematurely (in the middle).

 

[dhuhtala]

I'm running 30 front and 33 rear - not worried about performance, just comfort.

 

[Husky]

Wow, 30 seems awfully low, I'd be a bit worried about tire wear and temperature rise (not to mention poor handling).

 

[dhuhtala]

I don't notice any issues...3 PSI shouldn't make any big difference.

 

[gonemax]

Wouldn’t you think that all the tires F&R should be the same air pressure being that the vehicle is AWD.Running different air pressures should give a different circumference to the tires which would raise havoc with the differential's.Negligible?

 

[EdP]

Wouldn’t you think that all the tires F&R should be the same air pressure being that the vehicle is AWD.Running different air pressures should give a different circumference to the tires which would raise havoc with the differential's.Negligible?

Not at all. Circumference is negligible, but if you load up the back with 15 bags of concrete mix you don't want the same pressure. The engineers have thought of things like that.

 

[Slip_Angle]

Wouldn’t you think that all the tires F&R should be the same air pressure being that the vehicle is AWD.Running different air pressures should give a different circumference to the tires which would raise havoc with the differential's.Negligible?

Won't make a difference in circumfrence, but it does make a different in oversteer/understeer and fuel mileage.

 

[FastCars]

It's been my experience most dealers just suck (as in, don't pay any attention) at getting tire pressures correct. When I test drove my GV70 each tire had a different pressure ranging between 33 & 40 psi . This inspite of them making a big deal out of their 'nitro fill' (forced dealer add-on). Told the sales mgr I would not be taking final delivery if they were not set correctly & they finally got it right. My Hellcat was no better, tires were set to 45 psi (transport setting) the day of delivery & I made them adjust to the correct pressure before I drove off.

The nitro is pretty much a scam unless you are racing (especially drag racers). What's far more important is that wherever you are airing up has a properly functioning air dryer/filter on the compressor or filler hose line. Water vapor in the air causes uneven temps in tire pressure & is hard on the TPMS sensors.

 

[Slip_Angle]

Nitrogen just shrinks and expands less. Useful in climates like Canada where you lose 5-8psi depending on how cold it gets with regular air... also useful in racing where you want your pressures to stay consistent.