Defeating TPMS???

[TTARP]

So I cannot lower the rear tire pressure to 60 and reteach when unloaded? With my 2000 I had trouble with wear in the center of the rear tires if I ran 80 PSI unloaded. I run with no load 95% of the time. The owners manual says nothing of a minimum. Where is this info from?

[PowerStrokeHD]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TTARP</div><div class="ubbcode-body">So I cannot lower the rear tire pressure to 60 and reteach when unloaded? With my 2000 I had trouble with wear in the center of the rear tires if I ran 80 PSI unloaded. I run with no load 95% of the time. The owners manual says nothing of a minimum. Where is this info from? </div></div>

No you can not lower the pressure and reteach them. The only way the low pressure activation point can be adjusted is in the vehicles computer and no one other than Ford can do this, not even the dealer.

[nickPSD]

Interesting.........

[jimmy]

TPMS will let you discover that most tire gauges you have are inaccurate by a few psi. If you air tire up to 80 and it doesn't go out it is probalby your gauge. Try 82, 84, 86, etc until the light goes out after a drive.
Sharper image has a universal tire transmitter interpreting tire gauge but it is pricey (I think $99).

[nipperdog]

I have an early build (04/08) 250 and I don't have a TPMS system. Had one in my 04 expo and it did work ok.

[cssutto]

I suspect Jimmy has hit the nail on the head.

Several years ago, I decided that I was going to get really serious about tire pressure. As the price went up on tires, so did my interest in getting the most out of them.

The first thing I did was set out to buy an accurate gauge.

I found it not uncommon for tire gauges to vary 5 lbs. When tire cranks tell you that 5 pounds can make the difference in tire life and tire heating, which directly affects safety, and you find that your gauge is off that much, then a very slight loss of air that is within the limits you believe is safe, puts the tire in the red danger zone, it gets your attention.

After buying and throwing away several, I found what the stores call a buss tire gauge. This is not one of those little dinky in your shirt pocket things. It is about 12" long. I then found a gauge that goes on the end of my compressor hose that matched the buss gauge. That took three more to find one that was on the money.

Now when my dealer rotates my tires, I drive the truck home, let it sit overnight and check pressure the next morning and invariably the pressure will not be correct.

It will even vary from side to side on the days when two men are working on my truck, one on the right side with his gauge and the other on the left with his gauge.

Get a good tire gauge and then see what happens.

You may still have to try different pressures because you do not know for certain that the computer was properly set at the factory. If they did everything perfect, look how short this web page would be!!!

CSSJR

If we do not wish to lose our freedom, we must learn to tolerate our
neighbor's right to freedom even though he might express that freedom
in a manner we consider to be eccentric.

[ridge123]

Do the sensors just screw on to the valve stem of the tire??

[Stroked & Stoked]

They are on a band around the inside center of the rim

[calfroper1]

seems like the fronts say 65 but you have to go up to about 70 to get the light to clear then let pressure back off till about 67.I run 67 in front and rear and seems to working for now.
Jim

[nascarj]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PowerStrokeHD</div><div class="ubbcode-body">TPMS is only federally mandated on F-250's, although Ford has chose to make it standard on all SRW F-350's as well. </div></div>
Is this a Job 2 thing?
I have an 08 F250 I bought in July... The tag on the fuel door says 65/80 and I don't even know if it has TPMS. I run 68-70 psi front and 60 rear- unloaded (it gets the rear to turn and counters the front pushing so bad) and have never seen or heard a warning.

j

[ford_doctor]

The TPMS requires the tire pressures be set to specification and then the system needs to be trained. It is not as simple as turning the key on and off three times. I am afraid that many dealers are not setting tire pressures and or training the system during the Pre-delivery Inspection. If your truck is equipped with this system, you should have received the training remote with the owners manual or the in the glove box. Instructions should be in the owners manual describing the procedure. Keep in mind, that owners of vehicles with different tire pressure specifications for front and rear (almost all are) will need to re-train the system when the tires are rotated or when a wheel has been removed from its position on the vehicle. If the tire pressures are properly set and the system has been trained you really should not be having issues.

The real problem with these systems is they are not configurable for obvious reasons. Anyone who modifies their truck with different tires that require different pressure settings or lower their tire pressures for off road/beach driving cannot change the parameters.

[haul_n_horses2]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SteveHeywood</div><div class="ubbcode-body">My brother recently bought an 08 F350 which is equiped with a tire pressure monitoring system (TPMS). Good in theory, bad in practice.

Does anyone know how to defeat/turn off the TPMS? He wants to be able to run less air in the rear tires without being driven crazy by dash lights/alarms.

Thanks, </div></div>I was at the dealership today discussing this with some of the folks there. They agreed it could be quite annoying and said they had had several new owners bring their trucks in to be "recalibrated". Apparently, they can reset the target pressure that the TPMS will issue a warning. It has to be done in the PCM (ECU) by hooking it up to their diagnostics computer. Kind of like they can change the revolutions per mile to adjust for taller tires. Hope somebody else can confirm that for you.

[Ugly-Jeep-Truck]

I think there is a 20% threshold built in, because people have lowered the rears to 65 without tripping the light. Mine has worked well so far in that the light has not come on, and we have gotten down to -10 degrees so far this winter. It does however irk me when a dealer says legally they can't deactivate it because it is only mandated on trucks with a GVWR of <10,000lbs, my F350 has a 10,700 GVWR so in theory and legalese does not require the sensors, yet I am stuck with them. Luckily they are not that expensive, about a 100 bucks per.

A cooworker has a Job 2 or 3 F250 with the 20" wheels and SWEARS his does not have TPMS..as in no light comes on the dash when he starts it up, and we're pretty sure it's a Job 2/3 because he just took delivery a month ish ago.

[Airforce]

It is late so wasn't able to read all the replys till tomorrow. Had a thought since my 3500 I run 65 front and 60 rear. This is of coarse not legal but have an air tank with the holes in them for the pressure sencors in the air tank and keep them at the perscribed air pressure. This air pressure seems to be a stupid idea just tell the driver that the air is less then 30 psi or so and then have the alarms or such activate?

[Stroked & Stoked]

you will get a dash warning with sensors removed.