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[MOCKBA]

I heard that RFT lose pressure faster than regular tyres. Our cars have tyre pressure monitoring system, however I believe it won’t warn you if tyres lost pressure evenly. It may also have to low threshold for alerting. We have high pressure tyres for better performance and stability on high speed. I didn’t check my tyre pressure since purchase, so I am curious if somebody does such check and what results?

[Papa13]

I check mine once a month at least, RFT or Non-RFT.

Better to be riding on correctly filled tires.

[jeremyc74]

The TPMS will warn you if the tires drop below 10% of the pressure in them when they were set. Losing air evenly won't cause them not to warn you. They're four independent sensors.

About the only time I check mine is before hitting the highway for a long trip. I think it's a good idea to check them often, but I only drive the car about 4 miles each day, and it's at city speeds. A low tire would make itself known long before I had a blowout under these conditions. High speeds on the highway are a different story though.

[tbird]

I check mine pretty regularly, every couple of weeks, and I get them topped off at least once a month. I do the nitrofill on them. Yes, I know, the "jury is still out" for most on if nitrofill works or not. For me, it worked incredibly well on an old commuter car of mine, and it does help with the tires not losing air as fast. So I do it to all my cars. One time payment, lifetime fill, tires are cooler in temp, don't lose tread as fast, don't lose air as fast. That's enough for me to like it.

[gtaday51]

Once a month. Its a simple check while I get gas. I found that the Bridgestone loose about 1-2psi a month. Depends on the temp shift that month.

[WhiteOne]

I haven't checked mine since 7/1/08.

[bman6074]

Yea i have been lazy with this car. I check it in my M3 once a month and before any long drives. But with the 1er's sensors and the other automatic thingy's (Lights, climate control, windshield wipers, Etc) I have become lazy relying on those to let me know what’s going on. It's horrible.

[ruffstik]

you can check the tire pressure?? ; )

[Tom K.]

I also find that the Goodyear RFTs on my 128i seem to be more sensitive to temperature and lose a few lbs. per month, even at constant temps. So I check them at least monthly and top off with 78% nitrogen as needed.

Tom

[fourtailpipes]

i check every time i wash my car, which is every 2-3 weeks normally (and of course after every session on the track). under normal circumstances, i've seen them lose drastically different amounts of air over time... anywhere from no change to as much as 3-5psi in only a few weeks. even with non-runflats, the sidewalls of some popular tires (especially cheater-streeters like RT-615, star spec, etc.) are so stiff and short that a 10psi decrease may not even be noticed when walking up to your car.

[///M1]

Monthly generally. Keep in mind that tire PSI changes with temperature, roughly 1 PSI lost for every 10F degrees decrease in ambient temps. So all else equal, if you live in a 4-season climate, your tires' pressure can be fluctuating 8-10psi! (e.g. 10F lows in winter to 100F highs in summer)

[Dave]

I check every time I drive...scary potholes in NYC/ NJ

[Call]

Every Friday of each week. I also re-torque the wheel bolts. I feel I need to do this out of an abundance of caution since I have had a wheel come off the driver's side front on two different cars. I no longer trust anyone except me to do this. My tires last longer and I haven't had a wheel come off since I started this regimen. Plus I get a front/rear alignment every 6 months.

I think some of these issues are due to the "aggressive nature" of my driving.

Call

[SV Concepts II]

I check them once a month and before autox and meets/drives.

[JHZR2]

Remember PV=nRT. All remain constant more or less except P and T. Pressure then changes in a proportional way to temperature.

In conditions like we have been having on the east coast lately, you could have an 80 degree day, then a 30 degree day not long after. Do your checking at even a smaller delta, say 40 then 60 can have a big difference.

Forget "losses", temperature plays a big enough role to justify frequent checking if you live someplace where it varies.

[sparoz]

Comparing with where you guys are, our temperature's fairly constant (always hot!). I haven't checked mine for ages since I've put nitrogen in. I've checked it a few times, and it's spot on where it was, so I don't bother checking for 5000kms.

[BlackNWhite]

i usually do every time there is a drastic change in the weather, which is about every other day this time of year...