I do not own a tag-axle rig yet, so I am interested in knowing if the axles are more than or less than 40 inches apart. If they are less than 40" then the limit to an axle is 20,000 lbs. If they are more than, then the limit is 34,000 lbs. I found this information in the Federal Bridge laws defined here <http://www.ntda.org/LinkClick.aspx?fileticket=NiMFqXy27gw%3D&tabid=115>.
So, even thought your rig may be "rated" on the drive axle to 23,000 lbs, is it not limited to 20,000 on the federal highway system, and if you are overweight, you might have problems traveling on some toll roads (ie Ohio, etc) because they weigh you before you get on?
Please educate me.
Thank you.
//Karl