Tire wear

[Scarsman]

Originally Posted by scottminor

So I have had my "new to me" 05 hummer for about a week. It appears to have relatively new BFGs on it. The outside of the fronts are starting to feather. It feels like it may have a slight pull but I cant really tell. I am running about 34 lbs of pressure when tires are hot.

I would get the alignment checked. It sounds like it has either a camber or toe problem. Tire pressure sounds ok, you could run a little higher if you want, like 40. If the tires are good then get it checked soon, because if it is off you can ruin the tires prety quick.

[scottminor]

40 PSI cold or hot?

[Olfart]

Look at the label on the inside edge of the driver door for tire pressure. Mine is 37 PSI. Always check presure when tires are COLD

[Scarsman]

Yes, you want to check them cold. It wont hurt to run a little higher PSI than what it says on the door. I spent many years in the tire industry, and have watched thousands upon thousands of tires wear under every imaginable condition. The manufacturer recommended PSI usually leans a little to the side of a soft ride. That is how the whole Ford Exploder/Firestone thing came to be. The biggest issue was they were only running 27 PSI in them.

In my experience I have found many times they wear better with a little more PSI. It can also give you a firmer, more controlled feeling, and may even improve MPG, albeit to a small degree.

Just my $.02 based on what I have seen first hand. YMMV.

[scottminor]

So the crazy thing... I had an alignment done, which was need and had them put 40PSI in them. My MPG before 10-11. On the way home 14-15.

How can there be such a dramatic change?

[mbdougl]

Did you reset the Mileage indicator? It will read higher for a while until is has more data.

[scottminor]

I did. It seems to have a short averaging cycle. I think I drove it enought that I saw it average down and up and down. I drive it again this eveing and check it again. How many miles does it take?