I know you are supposed to check pressure each time before you take the bike out. But is it normal to need a couple pounds in each tire EVERY day? I took the bike out Friday, Saturday and today. Each day I checked pressure before I left the house. Each day I had to add a couple pounds to each tire. Temps were nearly identical each time and my garage is heated and never goes below 60 deg.

Is this normal or do I have slow leaks?

 

I only have to add air periodically maybe once a month.
If that often.

 

Spray some dish washing soap solution around your valve stems where they come though the rim and where you fill, if it is not leaking there, spray around the rim where the tire meets the rim.

You will see a bunch of fine/small bubbles if there are any leaks.

You should not be putting a couple of pounds in on a daily basis, weekly maybe. Mine hold air and do not need any but maybe once a month.

 

I'm no expert but your tire pressure gauge may not give you the accurate results you're looking for. You didn't mention the type of tire gauge you're using. I use a snap on gauge, Its pretty good. Also make sure you're placing the gauge properly on the fill. If all that checks out then you may have a problem.

 

I have a digital gauge built into my filling attachment for the garage compressor. The attachment clips on to the valve stem and has a squeeze lever to start and stop air flow. The gauge may not be 100% accurate, but it is consistent. It also agrees with the TPMS within a pound. The TPMS also confirms the pressure loss each day. I'll try the soapy water trick and see what I find. Thanks for the help, I just wanted to make sure this wasn't normal.

 

I’m running TPMS on my current bike and my last one. So, like you, I can see it easily every time I get on it. If you are losing every time you get on the bike there’s something amiss.

 

If you find that it is leaking on the fill port of the valve stem, the core might just need to tightened. Most auto stores or Walmart sell the tool if you do not have one, bicycle stores should have them also. Some of the older metal valve caps had them built in.

 

I have a few of those tools and already checked that to valve cores are tight. It would have been nice if it was that simple! I've learned long ago not to overtighten those things. I have a few like the one you pictured, they make great valve caps so you always have them handy. But my favorite one looks like a small screwdriver.

 

Fill the tires then leave them alone for a week. Check to see if you have any air loss

I could understand having issues with one tire but not both! Don't overthink it.....

 

Trade it in on a new CVO… J/K…soap and water should tell. Good luck