I own a 2016 IS 200 t F Sport and the recommended tire pressure is 36lbs. I had a new set of tires installed after purchase from TireRack. The tires were inflated to 39lbs and
tire pressure fluctuates between 36 - 40lbs. I'm in Michigan and bought high performance all season tires as I will drive the car sparingly during winter months.

Is there a way to get pressure consistently close to 36lbs?

 

It's tough to pick a temperature and stay there as the tires heat up as your driving and cool down as it's parked and as you know seasons play a big part.
40 is by no means anything to be concerned about. IMO - I'd just keep an eye on them as much as you care to and enjoy your car.

 

That is normal on every car and nothing to be worried about. Driving causes the tires to heat up, heat expands and causes tire pressure to rise.

 

Try switching to nitrogen instead of air in the tires.
It's not going to stop pressure fluctuations, but reduce them more to your liking.

 

Never drive the car, just store it in an environmentally controlled vault. Only pressure change will be due to leakage over time.

 

Isn't our atmosphere already 78% nitrogen? Will this reduce fluctuations by another 22%?

4 pound variance reduced to a 3.2 pound variance lol

 

So did anyone actually do nitrogen? Results?

 

Nitrogen seems like a bunch of hot air...
"N2 molecules are larger than O2 so they don't migrate through pores in the rubber"
"Race teams use it". (Track side tanks also used to power the air wrenches without providing O2 to a fire...)
"Doesn't deteriorate the tire's inside rubber" What, ArmorAll protects the outside?
And as 95bat revealed...we already breathe 78% N2 anyway.
Green valve caps are stylish though...

 

Does anyone know if 2020 rcf track edition comes with nitrogen filled tires? How can I find out? Or just go get em all refilled to be %100 sure

 

I doubt they do...I would go get them filled if you want nitrogen.

 

I can say for sure that nitrogen doesn't fluctuate with temperature that much and it doesn't weep through the tire like having air only...therefore maintaining pressure for a longer time without the need to add.
The green cap is to let someone know there is nitrogen in the tire...seems like a pretty easy/simple way to identify a nitrogen filled tire.
A seperate use for nitrogen in cars unrelated to tires is checking for AC leaks. You can fill an AC system to find where it's leaking from...and once the leak is found you can simply release the nitrogen into the atmosphere without any harm.
I'm not sure what us breathing 78% N2 has to do with the tire issue, but ok. I don't think anyone is questioning there is nitrogen in the air, I think the idea is that we are putting pure(almost) nitrogen into the tire...not just air.
Let's face it, the air we breath ain't that clean.
While air has 78% N2, after processing, a tire is filled with nitrogen that is roughly 95% N2...thus removing a lot of the impurities, oxygen, and water vapor.
Even though nitrogen filled tires will still loose air over time, it's roughly 35% less loss than just air filled tired.
And the comment about degrading the interior of the tire is correct, however, given that tires are wear and tear items, you should never have a set of tires long enough that the degradation reduction ever becomes a factor...so while it is true, it's also irrelevant.

 

Nitrogen was put in my '21 from the dealership. Or at least, they said it was, and I have the green "N2" valve stem caps.

I have not noticed a big difference compared to air. The pressure increases by 2-3 PSI after driving for 20 minutes. On cooler days, it can be as much as 2 PSI lower. I fill the fronts to 36 PSI cold on an average day (in Atlanta) in the summer, so on cooler days I may see 34 first thing in the morning or 37 if it's been sitting in the sun all day. Rears are filled to 37 cold. So after driving for a while I typically see 38 front and 40 rear. Seems to be about the same amount of pressure difference as air on my previous vehicles.

In theory, it is helping, but I don't think it is worth the cost. If it's included, I'll take it, obviously.

 

Seriously, yours is the only solution to fluctuating tire pressures. I’m glad that we all beat the subject to death, and our collective wisdom is as follows:
Nitrogen filled tires are BUNK, BOLOGNA and hopefully, a passing FAD. Three cheers for air and air compressors!!

 

Bingo. And nitrogen filled tires are a gimmick designed to make tire resellers a profit.

 

Right on, not worth the cost for N fill.