Just checked on my samurai and all of them were below 15 psi and one of the fronts was at 8psi. Also 13psi looks exactly like 35 psi with Interco TSL Super Swamper Radials on my samurai.
Also I can now tell how bad the flat spots really are or it needs balancing bad.
Fall is a particular time for dropping pressures.
Say what you want but TPMS does help.
then again, neglect will result in diminished tire pressures.
Approximately 1 PSI for 10 degrees
TPMS just saved me because I got lazy. I used to check the tire pressure in the wife's car almost daily. I very rarely drive it and our schedules don't really match up well is my excuse. She came to me the other day and said the light was on, so I checked it and all four tires where down to 23 psi. I got to thinking about the last time I had checked them and realized it had been months. I do check the bikes pressures daily.
Try living in the high desert. It's 85° as a high and 25° As a low weekly. I have to put air in almost weekly. (I might have a leak on a tire too)
Don't forget your spare.
This is a Samurai specific problem. Most mud tires have sidewalls designed to support a 7000lb brodozer, and this means your tire only looks slightly soft at 0psi on a Samurai. Drove on a completely empty tire one time (Hankook Dynapro MT) and I thought I had a slight alignment problem.
The Windforce Catchfors I got on sponsorship are an exception, the sidewall stiffness is well-suited to a light 4x4. At the last mud arena event I was in, other competitors were surprised at how much air I had in the tires for how they looked.
Edit: BTW pressures in the teens on a Samurai may not be a bad idea. I normally run 17psi front 13psi rear with these tires. It's easy to be driving on a 1" strip of rubber in the center of your tires with a Samurai if you run too much tire pressure, and you can really feel that in the rain.
Biweekly checks are recommended!
My Hoosiers would hold up over 800 lbs. with O pressure.
found that while checking pressures before a track day.
Would have been a nasty surprise on track.
@valve stem was leaking.
A PSI PSA?
Good thing I checked this, one of my miata wheels had gotten down to ~17 or so. I'm surprised as normally if it drops below 25 or so I get the 65 mph shimmy real bad.
Had a nail in one of the tires on the FRS No visual that I could see until the dash light came on when pressure hit 28 psi. Even at 20psi I could not see much difference. Dont have pressure monitors in winter tires.
I don't have sensors in my winter tires either. I just make it a point to check weekly or more.
I have the OnStar app for the Silverado so I check it regularly from my phone. Also get the OnStar report from Dad's Verano on my email so we keep pressure adjusted accordingly.
In reply to GameboyRMH:
ill likely be dropping down to Yokohama Geolander M/T Plus' which have a 400ish lb less weighting than the TSL Swamper radials.
This guy used to check them at every fill-up:
Along with checking ALL your fluids, washing your windows, checking the condition of your wipers, and checking your belts and hoses. Every time you got gas. For free.
It's interesting how easily you can see pressure changes on some wheel / tire combos and how little you can see them on others. With the Jeep, for the summer setup, a 2 - 3 psi change in pressure is visible in how the tires sit (they're pretty rounded so the change in profile is noticeable). The same change is much, much less visible on the snows, however.
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