Air Drop in One Tire

[jptruck]

I have 3,000 miles on my LC, and one tire consistently keeps dropping pressure. Very slowly (days, weeks), but it's noticeable. It happened in warm and cold weather. Generally, over a week or two, it'll be 4-6 PSI less than the other 3. I'm keeping them at 36, and the last drop was down to 29.

Not sure if I have a badly seated tire, or an extremely slow leak, or this is just something that happens in modern tires.

 

[EOD Guy]

I have 3,000 miles on my LC, and one tire consistently keeps dropping pressure. Very slowly (days, weeks), but it's noticeable. It happened in warm and cold weather. Generally, over a week or two, it'll be 4-6 PSI less than the other 3. I'm keeping them at 36, and the last drop was down to 29.

Not sure if I have a badly seated tire, or an extremely slow leak, or this is just something that happens in modern tires.

IMHO...... you picked up a nail/object. Air the tire up to 50PSI and take a mixture of dishwashing soap and water and thoroughly spray every surface of the tire and look for tiny bubbles.

 

[Ditchnap]

Same issue here with one tire/wheel. Argued with the local service department. Tire was searched extensively for any puncture, nothing visible or that made a soapy solution bubble. I told them to split the tire, wheel and TPMS sensor and wherever the problem followed is the defective part. Was told it would be on my own dime and I argued that if the rim or TPMS/valve stem was the issue I shouldn't be responsible for diagnosis. We will see what happens.

 

[Revelstoke]

Check the valve core first...ask me how I know!

 

[TrailWhale]

Local tire shops will fix this for you for free. Just remember to give them some business down the road when the time comes!

 

[jayce]

I once had a loose nut on one TPMS sensor. Pressure was lost only when tire was rotating, which pushed the sensor slightly askew. You can check by pushing sideways on each valve stem to see if there is any play and/or air leakage.

 

[jptruck]

IMHO...... you picked up a nail/object. Air the tire up to 50PSI and take a mixture of dishwashing soap and water and thoroughly spray every surface of the tire and look for tiny bubbles.

I've had plenty of nails over the years, this aint that.

 

[jptruck]

I once had a loose nut on one TPMS sensor. Pressure was lost only when tire was rotating, which pushed the sensor slightly askew. You can check by pushing sideways on each valve stem to see if there is any play and/or air leakage.

I'm guessing this is about right. The drops are only noticeable when it moves.

 

[Ditchnap]

I once had a loose nut on one TPMS sensor. Pressure was lost only when tire was rotating, which pushed the sensor slightly askew. You can check by pushing sideways on each valve stem to see if there is any play and/or air leakage.

I don't believe the sensors on the LC are the kind that are secured with a nut.