RE: Tire Sensor Monitor light
 

f5fstop...welcome aboard..... your knowledge is a true asset to any forum.

RE: Tire Sensor Monitor light
 

My door sticker says 30 PSI Cold for all 4 tires. I run them maybe 32 or 33 at the most. Why would you run them at 40? You are going to have less traction and uneven wear. I've had mine that high once before. Didn't you notice how all the dirt on your tires never stretched the width of the tread? I'm just curious.

And where did this 35 psi recommended come from? It's probably because I have the base model and some of you have the 33" tires which may be different.

RE: Tire Sensor Monitor light
 

once again...re-read my earlier post on how to find the correct tire pressure for each tire.......it will tell you why you don't have dirt running across the entire tread footprint.

RE: Tire Sensor Monitor light
 

I'm done here:)

But would someone here now remember where this thread is?..cuz, I'm sure the question will come up again in 6 weeks:D

RE: Tire Sensor Monitor light
 

All I'm sayin is my tires have had more variance then 2 lbs and the light never came on unless one of them was below 20 and that was when off-roading. I'm done also. In fact, I think I'm going to take a forum vacation. I bet if I'm gone for a week, this place will be dead ;-) Cya in a week suckas!

RE: Tire Sensor Monitor light
 

Yes, 33s are recommended to be set at 35 psi.
Problem with the chalk test is the alignment has to be in spec for it to work. However, with all things being in spec, the recommended pressure should be the pressure that wears the tire evenly. That, along with SAFETY, fuel mileage, etc., is one of the factors leading to the desired PSI rating.

RE: Tire Sensor Monitor light
 

Little thing about the TPM--make sure you don't have metal caps on the valves as they interfere with the monitoring-so says the service dept a the dealer, as well as Discount Tire. Ugly little plastic caps are what's recommended.

RE: Tire Sensor Monitor light
 

I would say that anywhere in the 30-40 psi range should be fine.

The 285's have the max tire pressure on the sidewall, like any tire does. It states a max pressure of 50 psi. So, running 40 should be no problem. Anywhere in the 30-40 range (or even close to the max)would work, and would fall intothe drivers prefference zone. I ran 35 on the H3's the whole year we've had it. But I went up to 40psi for our trip to Florida. Am I worried that it's going to cause premature/irrgeular wear.. or be unsafe? Of course not. The tires should be safe up to the max listed setting. After that, it's just a matter of what the vehicle maker thinks is a fine tuned setting that works well with the vehicle. There is a reasonable range that can be run without issue, and will ride and perform to the drivers desired likings. In a nutshell I usually run my tires 5-10 psi below the tires recommeded psi. But I'm also used to that pressure being much lower on large off road tires. So, the 50 looksa bit high to me, but I trust the tire company to know what they're talking about. There is no dead set answer as to what exact psi should be run. You can elect to go with GM's recommendation, or find something that suits you, as long as you stay within a reasonable range (not to exceed the max psi)you should be fine. Of course running too low of a pressure, at high speedscan also cause damage too, due to heat. So, good judgement should be used.

RE: Tire Sensor Monitor light
 

I have Chrome metal caps on mine and it has never gave a chirp of a problem...Yes the system is working, cuzI tested it by letting some air out of one tires and drove it till the warning appeared on my DIC...So I know it works.

Also to affirm 40 PSI is Ideal ...I get full tread contact on the road Mikey...Been running 40 since new (15,000 miles)and the tires show absolutely no uneven wear..GM people are just that, GM people..they ARE NOT TIRE people...Talk to a tire expert and not a GM person, if you want to know about tires..I did.

RE: Tire Sensor Monitor light
 

so I got my 07 H3 back this afternoon and was promised the TPM is fixed. Supposedly they took a TPM from another 07 stock hummer and replaced into mine and reconfigured it for my tires. When the dealer performed a system diagnostic check they also found/replaced an inoperable parking brake switch. Let's hope it works and I won't have to take it back for this issue for a 4th time!!!!!
BTW, please pass along any trail links you'd recommend here in the greater Phx/Maricopa County area. Great pics out by Saguaro Lake!