Picked up the new truck today.

Me Again wrote:


If I took it out of T/H it would shift to 6th. This was a short test tow and I was looking at lots of things. Given that at 80 MPH it turns around 1750 RPM, It caught my eye that it was at a similar RPM range towing at 60-65. So it was in 5th gear not 6th. Will learn more when I do our first real trip somewhere.

The other thing to work on is tire inflation for the LT275/70R18E's.

Lbs Combined
35 = 4140
40 = 4540
45 = 4940
50 = 5360
55 = 5680
60 = 6040
65 = 6390
70 = 6720
75 = 7060
80 = 7280

So with the front axle at 5100 pounds and that is not going to change much, it does not need the placard 60 lbs inflation. 55 lbs will give over 500 lbs extra.

The rear weight of 5920 will go up a few hundred pounds when I load the rest of the snowbird supplies, so 70 lbs inflation will provide a similar 500 lb buffer in capacity.

Another interesting thing to note is the truck was weighing in at 11,020 with a 11,700 GVWR. So if I load wife and maybe 3 or 4 hundred move pounds of gear in the truck, I will be within a couple hundred pounds of GVWR. Given that the truck weighed in a 8220 coming out of the transfer station/dump, one would be hard pressed to tow a 17K trailer and stay under GVWR. Might be able to stay under RGAWR, but wound be over GVWR - yet again!!! Any future trailer should be in the max weight area of 14.5K.

Chris

Just a note on the tire inflation for that tire size. I ran my front at 55 psi to try to soften the ride for a while. I found I had more shoulder wear at that psi. I run at 60 psi now and I still have a little more shoulder wear on my tires. The rear tires typically wear more in the center. I do run my rears at about 50psi and still have more center wear (unloaded of course). So as long as you rotate at the recommended 7.5k miles, you will have even tire wear. I wonder if the duallies run a narrower tire to help with tire wear since you don't rotate front to back on those vehicles (you rotate side to side).