Tire pressure stability
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Pit Crew
Joined: Oct 2015
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From: FL
Tire pressure stability
I have the 20” stock wheels/tires. Does any one else have to constantly add air to their tires? I feel like every week I’m adding air to all four. The TPMS also seems incredibly sensitive and various significantly during driving. I’ve never had this before.
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Joined: Aug 2005
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From: ƒ(x)
Funny enough, after 15 months, one of my tpms went off. Likely first coldish night of the season. Was slightly low, rounding error, as it was the same as one other tire. After driving a bit, it went off. But I adjusted all tire pressures anyways.
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Joined: May 2017
Posts: 508
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From: MA
^ This is very common on the first cold night of exposure. Service reps will confirm this - they get inundated with calls here in New England on the first cold night of the season. They typically recommend setting the cold pressure a few psi over the recommended value. I usually do a "summer" morning cold setting and a "fall/winter" morning cold setting - of about 35-36 psi. This keeps the TPMS system happy on cold mornings.
As far as the original post goes - I haven't lost any tire pressure after one year of ownership. It does tend to lose 1-3 psi when it's off the road, sitting all winter in my garage - but that's to be expected. I don't lose anything when I'm using it regularly. As far as variations on the display goes, those numbers will change quite a bit due to temperature changes. Simple physics. Really hot days in the summer can boost those number higher than one might expect. This is normal. What matters is the PSI when the tires are "cold" or ambient temperature.
As far as the original post goes - I haven't lost any tire pressure after one year of ownership. It does tend to lose 1-3 psi when it's off the road, sitting all winter in my garage - but that's to be expected. I don't lose anything when I'm using it regularly. As far as variations on the display goes, those numbers will change quite a bit due to temperature changes. Simple physics. Really hot days in the summer can boost those number higher than one might expect. This is normal. What matters is the PSI when the tires are "cold" or ambient temperature.
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Joined: May 2017
Posts: 508
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From: MA
This doesn't mean the sensors are sensitive. Your tire pressure is clearly too low. Recommended cold tire pressure on the LC is 33psi. "Cold" means - before your start driving; i.e. before the tires have warmed up due to road friction. If you set your "Cold" pressure on a warm, summer morning - to say 33psi, guess what - it won't be 33psi on a much colder morning. Pressure drops and rises with temperature. Set it to 33psi (or even a little higher) SEASONALLY - preferably in the morning, before you start driving it.
Last edited by uchujin; Sep 7, 2018 at 01:33 PM.
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