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[Ivan Beaver]

Time for a reminder...

Yesterday I checked my car tires and they were down to 30#... Now that I have a good bicycle tire pump I top off my tires by hand. Putting 5# more into 4 tires was actually like work. 

I counted pumps, and it took around 80 pumps per tire to hit 35#. I was no longer tempted to inflate any higher.

JR

Mine were low a couple of weeks ago.

Every time I think about air pressure in tires-I think of your reminders.

Thanks

[Scott Wagner]

Not only are tires porous, pressure is affected by temperature. I check my tire pressures with every fill-up, if not more often. As for gauge accuracy, a 1-2 PSI difference (+/- 6%) is hardly critical in normal street-driven usage. Racing is a different story. You don't want to know how much my gauges cost.

How often do you all test the torque of the wheel lugs?

[Ivan Beaver]

How often do you all test the torque of the wheel lugs?

I use the "feels about right" when changing tires.

So far I have not lost a wheel

[Keith Broughton]

I use the "feels about right" when changing tires.

So far I have not lost a wheel

No Ivan, it's not a wheel that you have lost 

[John Roberts {JR}]

I use the "feels about right" when changing tires.

So far I have not lost a wheel

I had one get loose once (didn't fall off) but friends don't let friends prep for the drags when drunk...

Back in the '60s when I was a car-less college freshman in Boston with my car parked in NJ, I was home one weekend and after closing down the bars in NY (still too young to drink in NJ), me and a few friends decided to pull an all nighter and hit the drag strip the next day.. Actually it was already the next day and dawn was only a couple hours away. Long story short, one loose cheater slick was only one on the list of several new experiences. After reaching the drag strip I was unsuccessful convincing the pit inspection officials that my car was stock.  I think the loping idle from my full race Isky cam gave me away. Since I didn't have a scatter shield I didn't get to race that day. 

JR

[Scott Wagner]

I use the "feels about right" when changing tires.

So far I have not lost a wheel

Losing a wheel is certainly a problem, but not the only one caused by improperly (or unevenly) torqued lug nuts. Warped brake rotors, wheel bearing issues, etc. can all be caused by that. Snug is good enough for not losing a wheel, but even torque (within spec) is very important for the rest of the rotating mass at the end of your axle.

[Stephen Kirby]

"You picked a fine time to leave me, loose wheel"

[Tom Roche]

Just asking, but how often do you check the calibration of your tire presure guages?  If you do (and don't live in Colorado Springs near NIST), what do you do to check the calibration?  (My non-NIST traceble solution is to use a 6" 1.5% accuracy guage manifold set up, in the middle of the range.)  Not withstanding the foregoing, an inaccurate guage is probably better than not checking at all. Mark C.

I use an Accutire digital tire pressure gauge that claims an accuracy of within 0.05 PSI, which is plenty good for my daily commuter.  Consumer Reports reported the Accutire best in accuracy.  I've owned it for about 20 years and the battery is still good.

By the way, the TPMS in my car never fails to activate as soon as pressure drops below 32 PSI on any one tire.

[Jonathan Johnson]

I use an Accutire digital tire pressure gauge that claims an accuracy of within 0.05 PSI, which is plenty good for my daily commuter.

Is that accuracy or precision? There is a difference between the two terms, and they are often confused.

I have a digital indoor/outdoor thermometer with a precision of +/-0.05 degrees (meaning that the display shows tenths of a degree), but it is inaccurate by several degrees.

[Tom Roche]

Is that accuracy or precision? There is a difference between the two terms, and they are often confused.

I have a digital indoor/outdoor thermometer with a precision of +/-0.05 degrees (meaning that the display shows tenths of a degree), but it is inaccurate by several degrees.

As I mentioned, 0.05 is the claimed accuracy.  The display reads in 0.5 PSI increments.

[ProSoundWeb Community]