Look at http://www.catscale.com and search for San Diego. Here's one that I found.
HWY 905 & Piper Ranch Road
Otay Mesa, CA 92154
There are probably other scales around, but you definitely want a certified scale. The CAT scale that I use has several large pads which make it easy to place each axle on a different pad. All except for the trailer axles since they are so close together. Not having separate values for the two or three trailer axles doesn't seem to be an issue since you just take the trailer weight and divide it by two or three (# of axles) and you know how much weight the trailer axles are carrying.
I don't know what it'll cost in San Diego, but at the Longmont, CO scale it's $9. I've already gone twice; once with just the empty truck, once with truck and 5th wheel which was unloaded. I'll go again this weekend.
What happens if you're over the GCWR. Good question. There are people on this forum and other forums that I read which will say you'll end up in purgatory if you go over any of the ratings. GVWR, GCWR, GAWR. At the same time there are folks at the opposite end who practically feel if your truck can move the weight you're fine. I'm in the middle, but lean towards the first group. The manufacturers have built these trucks with work loads in mind. To go over those numbers means you'll wear out parts of your truck at a faster rate than normal at a *minimum*. Going over the ratings could also be extremely unsafe for you and others around you. You need to make the choice. I did. My Dodge 2500 with my 5th wheel is over the GVWR. I started to read quite a bit before purchasing my trailer and found some interesting data. The Dodge 3500 outfitted the same as my 2500 of the same year has an 1,100lbs higher payload. The only difference between the two trucks is the rear springs. I modified my truck with air bags and adjustable high quality shocks. I now feel that my truck is equivalent to the 3500. Strictly speaking from a legal point of view my truck is no different today than it was when I bought it. My truck still has the sticker which indicates a GVWR of 9,000lbs.
Does that help?
