02/2012 X5 35d M57Y CPO 119K miles NOKIAN WR G3 30K miles
TPMS should NOT take into consideration pressure drop due to cold weather. Reason is that you lost pressure. It is not like it is there but reading is wrong, it is that you lost it!Knows internally but doesn't tell me that's even worse. Total shit design. I just know that twice TPMS on wife's e70 came on alerting me there was a Problem and lit up all tires.
Spoiler alert there was no problem. It was just cold outside. All the tires were a little low zero tires were low enough to warrant an error message most definitely not 25% low on one tire the system is shit.
They didn't take ambient temperature into account in the programming. The alert came on about 90% of initial pressure when all tires were about the same. Terrible programming shit design. Every other car with TPMS does a better job. Not sure why I bothered getting new sensors I'm better off just measuring tire pressure or getting wife the color coded valve caps.
But you also want actual readings so you don’t have to inspect it?The charts do show the disaster of the situation that brought about TPMS: the percentage of people that both "visually" check their tires combined with using the max number on the tire not the door jamb is very disturbing.
I never said TPMS is bad or should be avoided I said the particular implementation on e70 is total shit and I'm better off just measuring the pressure myself.But you also want actual readings so you don’t have to inspect it?
Life doesn’t work like that. You could have kid with 105f fever at 2am like I did. Are you going to check pressure? If i had flat or low pressure,, TPMS would tell me, and I would take another car.
Also, before we didn’t have child sears, and air bags, and seat belts, and ABS, and ESP, etc. So should we get rid of it?
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E70 implementation is not shit. It is fine.I never said TPMS is bad or should be avoided I said the particular implementation on e70 is total shit and I'm better off just measuring the pressure myself.
Regarding the hypothetical drive to ER with child I would drive off and unless a tire is more than 10# low I will get there and diagnose why the car was pulling funny before heading home.
aBS is responsible for plenty of crashes. The best way to describe this is that it adds 30% to your stopping distance. You can steer Soo you get to choose what you want to hit, rather than avoid hitting whatever in the first place. There are always trade offs.
I'm not anti TPMS I'm anti moronic.
TPMS that alerts me of a non problem (29# on 4 tires due to ambient is not a problem. It's not near the cut off required by the code and it's moronic).
TPMS with values is a different story all together.
And still: the question of the thread topic nope addressed: RFT rims? Non RFT tires? I've gone both ways never caused a problem either way.
Absolutely worse thing for tires is loss of pressure, even slight one.That's interesting.
Americans are bad about checking their tires. Obama once said that if people would keep their tires pumped up it would save more oil than we'd get by drilling in ANWR. Car and Driver debunked that, but is an exaggeration instead of being totally false.
I have to pull my cars out of the garage to check the tires. I do it in the morning. The (other) geezers out getting in their 10,000 steps always ask "You got a flat tire?"
Or just don't jab the pedal to the floor as exclusively taught. Abs /DSC is a marvel of technology it just had a trade off of longer stopping distance which is never taught to three people being indoctrinated to slam the pedal to the floor and let the magic happen.E70 implementation is not shit. It is fine.
TPMS is not there to replace visual inspection. That is not intention of TPMS. TPMS should alert you of low pressure or puncture, not chasing nails for you or wear etc.
You have a problem with people not TPMS. To me people don’t behave like you want them, so it pisses you off (bcs. you are doing everything right) and TPMS is just another way to be lazy.
Don’t be like them. TPMS is fine. Check your pressure values using manual pressure monitor. I mean, you are all about that, right?
As for ABS, there is solution for you. Take out ABS fuse and code out ABS warning. And there you go, 30% shorter braking distance.
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FYI the comment to pull the fuse is just being an ass we don't need that at xo.As for ABS, there is solution for you. Take out ABS fuse and code out ABS warning. And there you go, 30% shorter braking distance.
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Well, I found solution for you. I would definitely do that if I knew it would gain 30%.FYI the comment to pull the fuse is just being an ass we don't need that at xo.
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FWIW...years ago I did a bit of an analysis on this. I looked at the range of staggered tires BMW shipped all E70s, and found the largest variance from front to rear. I used this as 'the maximum allowable limit BMW engineers will permit' (autoputz will quote a british BMW TIS entry for the 6 series that says something else. I figured if they ship cars with it, that should have precedence over a self-serving 'tire sales' fabrication)you don't want to just bop into Discount Tire and have them install a new tire to go along with your other 3 tires sporting 7/32" of tread.
Not sure if this has been said, but (as I recall) the TPMS that uses rotational speed is NOT acceptable for run flats as they dont (may not?) chage diameter enough to trip an error. So tires with RFTs need an actual PRESSURE monitor.I'm not aware of a tie between rft and tpms. Tpms is required on all cars.
The BMW workshop manual lists a 1% maximum allowable difference between tires to avoid transfer case damage, on the x drive transfer case. I don't have the published figure for the non x drive transfer case. 1% works out to about 7 revs/mile, so that is their hard limit.
Staggered set-ups are mostly for cosmetics. BMW product liability lawyers also like them because it biases the car toward understeer. Juries tend to blame a car going off a cliff backwards on the car but blame a car going off a cliff forward on the driver.If maximum performance is your objective, an occasional TC replacement is part of the cost I guess. I can imagine BMW's decision to put different sized wheels on the car came down to: will it (TC) survive 50K miles? Sorta like the lifetime fluids issue and 15K mi. OCI. Since I'm the kind of guy who drives 'em to 200K+, I would really like to keep that TC alive as long as possible, so I try to keep my tires as even as reasonably possible. I've never had a tire shaved, but I have purchased used tires online to match my existing tires, though that's getting to be tougher to do these days as the tire industry keeps shortening the deemed serviceable age for tires.