I've searched but can't seem to find it. I had new 22's installed to replace the stock 17's. The installer (Tire Barn) set the pressure at 48 psi which I think is the max pressure for the tire. I've dropped them to 45 but I know they need to go lower. Anyone know what the door jamb says? Thanks
22 inch Tire Pressure
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Autbond
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I am running 40psi with my 24's, if that helps. I would definitely recommend filling the tires with nitrogen, I am a believer after my 33x12.50R20 Nitto Mud Grapplers had 40k+ miles on them when I sold my lifted 06 4Runner and still had basically half the tread left.
Dunno about the nitrogen, but you can see the speedometer variation here: http://www.discounttire.com/dtcs/infoTireMath.dos
domin8
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Yes, any tire can be filled with nitrogen, but I don't see why you'd want to waste the money. Look at the facts:
1) 70% of the air you breathe is nitrogen. The air compressors you use to fill your tires use the same exact air.
2) No nitrogen system that is used to inflate tires is ever 100% pure nitrogen. It just takes the air you breathe and tries to filter it. The most "purity" I've seen in a tire was 98%, and that was a new machine. Most machines record 95% or less.
3) Yes, nitrogen molecules are larger than oxygen molecules, but please see #1. Larger molecules due take longer to heat up, but they also take longer to cool down. Heating and cooling is what produces expansion and compression. All you did was slow down this inevitable process by filtering the oxygen and other gasses, and not by much.
4) It is said that the larger molecules of nitrogen help keep tires inflated better as weather temps fluctuate. Fact is, the size difference is negligable and not worth consideration.
5) My personal experience does include drag racing and slicks. This is the only place I noticed any real observable benefit to nitrogen. But, who heats up their tires at every light every day of the week only to sit 1-2 hours between each 1/4 mile run. Again, (see number 3) by the end of the day, if I went far enough in competition, my tires were only holding the heat instead of dissipating it. I found myself purging the tires, letting them cool, and refilling with air between each pass, the further I progressed.
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1) 70% of the air you breathe is nitrogen. The air compressors you use to fill your tires use the same exact air.
2) No nitrogen system that is used to inflate tires is ever 100% pure nitrogen. It just takes the air you breathe and tries to filter it. The most "purity" I've seen in a tire was 98%, and that was a new machine. Most machines record 95% or less.
3) Yes, nitrogen molecules are larger than oxygen molecules, but please see #1. Larger molecules due take longer to heat up, but they also take longer to cool down. Heating and cooling is what produces expansion and compression. All you did was slow down this inevitable process by filtering the oxygen and other gasses, and not by much.
4) It is said that the larger molecules of nitrogen help keep tires inflated better as weather temps fluctuate. Fact is, the size difference is negligable and not worth consideration.
5) My personal experience does include drag racing and slicks. This is the only place I noticed any real observable benefit to nitrogen. But, who heats up their tires at every light every day of the week only to sit 1-2 hours between each 1/4 mile run. Again, (see number 3) by the end of the day, if I went far enough in competition, my tires were only holding the heat instead of dissipating it. I found myself purging the tires, letting them cool, and refilling with air between each pass, the further I progressed.
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edgaranah1
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I keep my PSI at 40 with my 305 40 22 yokohama's
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Thanks for the comments. I think I'll drop them down to 40 to soften the ride a little bit. It feels pretty stiff compared to the real soft 17's. I went with the Continetal CrossContact LX's. I wanted the Yokohama Prada's but they are out of production and tough to find at least in this area. I didn't care about the nitrogen either way. It was free so it really didn't matter what they put in them.
Anyone looking for 17's with about 2k miles on the tires?
Anyone looking for 17's with about 2k miles on the tires?
hbr
Full Access Member
I couldn't get the Paradas either in 22, going with the Bridgestones. Nitrogen is bunk....
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