That'll vary according to a number of things, such as what size fuel tanks you have on there, the frame length, what sleeper you have, etc. You can expect it to range anywhere from 19,000 - 23000 lbs., give or take.
How much freon does a 2010 Peterbilt
I have no running lights on my 2006 Peterbilt 387 all of the lights work
You can find more information about the peterbilt 387 here: http://www.peterbilt.com/aero387.1.aspx It will provide you with multiple topics and choices.
The most comprehensive information on peterbilt 387 is available from the manufacturer. The web address is peterbilt.com. Thepetstore.com also contains substantial information.
387
Top of the transmission output.
On top of the transmission output.
You start by figuring out what's wrong with them, then proceed from there.
If someone is looking to get lessons on how to drive a Peterbilt 387, they may start by asking an owner of said vehicle. They may also find out by going to their local autobody shop to ask any questions they may have.
For a model with the full sized sleeper, 260 - 265 inches is the norm for wheelbase.
tire balance or out of round tires.
Find out what the problem is. In my experience, it's usually a bad wheel speed sensor.