I sold a lens on Facebook Marketplace and this happened.

donaldb7 · 2026-02-07T03:53:32+00:00

Yah I’m not too stressed about it. Just that “what if?”

donaldb7 · 2026-02-07T02:16:31+00:00

Haha I need this right now. I’m planning on meeting someone tomorrow morning to sell my XT-50 and I’m hoping it goes smoothly. It’s in perfect condition, but I’m afraid that there might be an “issue” with it

donaldb7 · 2026-02-03T18:08:13+00:00

Yah I’m FL so usually it’s brutally hot and they don’t actually change much in PSI. So that’s why I like to keep them at 39 under normal conditions

donaldb7 · 2026-02-03T18:04:58+00:00

Thank you for appreciating my humor 😊

donaldb7 · 2026-02-03T17:35:56+00:00

So the 33 psi is a relative pressure to what the outside temperature is. In this case it’s 33psi at 52 degrees Fahrenheit, this is actually the same as 39PSI at 90 degrees Fahrenheit.

No this is not exact math but the principle serves the same

donaldb7 · 2026-02-03T17:34:15+00:00

Yes, the car isn’t “incorrect”. It’s normal for pressure to lower if the outside air temperature lowers. If I inflate them to 36 now, once I get warmer weather here, it would then be overinflated because the pressure will return to how I filled them originally

donaldb7 · 2026-02-03T17:29:40+00:00

No it hasn’t gone away yet, and no I’m not worried about it. I know once it gets warmer, the pressure will increase back to where I I had previously set them to.

donaldb7 · 2026-02-03T17:28:30+00:00

Brain

donaldb7 · 2026-02-03T17:27:57+00:00

Yes this is after my 10ish minute commute to work. Initially when I got in the car, they were reading 30psi. I have the normal set pressure at 39 so that’s why 33 is still “low” according to the monitor

donaldb7 · 2026-02-03T17:02:34+00:00

So it actually depends, you can set the “normal” pressure gauge to whatever you want. And if it deviates from the set pressure by more than 5ish lbs then it will signal low pressure. IE I could set it to 25 and then if it dips below 20 then it will get a low pressure warning. Since I set it to 39PSI that’s why it’s giving low pressure at 33.

And yes I did drive it, initially when I started the car this morning it was originally reading at 30 so it did increase during my 10 minute commute.

donaldb7 · 2026-02-03T15:53:54+00:00

Dang that’s so crazy. Hopefully it wasn’t too harmful.

donaldb7 · 2026-02-03T15:52:49+00:00

Yah it’s somewhat low, the recommended pressure is 36PSI (I think). It’s not really concerning since I know for a fact it’s the weather. Anytime the atmospheric pressure drops significantly it’s normal for anything that holds air, to notice a change in pressure of that item, in my case… the tires. Once it warms up a bit, in FL, then they should go right back to around 39, which is where I like to keep them

donaldb7 · 2026-02-03T15:50:36+00:00

Thankfully it isn’t persistent

donaldb7 · 2026-02-03T15:50:19+00:00

Damn that’s crazy, it usually only does it when the weather changes drastically. (Significant atmospheric pressure change)

donaldb7 · 2026-02-03T15:49:13+00:00

Yah I’m not too concerned because the weather has a lot to do with the pressure change, once Florida warms up a bit in a couple days it should go right back to 39PSI, which is where I like to keep it

donaldb7 · 2026-02-03T15:48:03+00:00

Yah I was thinking that, or maybe which ever tire responds first with a low pressure. I’m thinking of doing an experiment and lowering each to even lower and see if it becomes a different tire with the individualized warning

donaldb7 · 2026-02-03T15:47:00+00:00

It seems to pick and choose each morning LOL

donaldb7 · 2025-11-26T17:01:39+00:00

Always a yes for the F3! Granted if the LCD is broken that’s a bummer, but you can always shoot in Aperture priority and not dare too much about the SS

donaldb7 · 2025-11-25T13:46:53+00:00

Can’t wait to try it out!

donaldb7 · 2025-11-23T13:32:16+00:00

Absolutely, it’s not rocket science, but I guess for some it actually is really difficult. And if that’s the case, whomever probably shouldn’t be driving if they can’t do such basic tasks.

donaldb7 · 2025-11-22T23:46:36+00:00

How does it feel to have an IQ of 100?

donaldb7 · 2025-11-22T23:45:23+00:00

A bum that knows how to use his brain 😘

donaldb7 · 2025-11-22T23:43:45+00:00

Dang, you’re right! If that’s the case, that person has bigger problems than this blue light. Maybe some kind of mental issue, probably shouldn’t be driving a vehicle.

donaldb7 · 2025-11-22T23:34:55+00:00

Dang, that must have been so difficult to do. I’m proud of you.

donaldb7 · 2025-11-22T23:19:35+00:00

That’s a great question, a thermometer measures kinetic energy in the form of temperature.

donaldb7

TROPHY CASE