this is from "Wadcutter" on my favorite RV site:
"The topic is brought up every second Tuesday and everytime someone responds who has no knowledge of the laws but just repeats the same old campfire stories which are flat out wrong.
I am a retired state police commander. I commanded a district which had the highest fine producing fixed scales in the state. In additiona I was one of 2 of the first Troops in the state to be certified as motor carrier safety inspectors. By IL statute only the ISP has the authority to conduct MCS inspections. I taught truck weight and MCS law at our academy. Over the years I weighed a lot of trucks. I also weighed a lot of RVs of various styles, not because of the law but because the RVers asked to be weighed to have their loading checked. Never ever saw any of them even come close to approaching max legal weights.
Simple answer to your question. The sticker on your truck is placed there by the manufacturer. It's like the tag on your mattress. It's required by law to tell the consumer what is in that product. After sales that sticker doesn't have to remain on the vehicle and there are a lot of vehicles legally on the road today which no longer has the sticker because of body repair, etc. The manufacturers do not make the laws. Think about this too. Do you think every Troop or weigh master out there has memorized what all the manufacturers stickers say on every style of truck made? Then toss into the mix 4X4 v 4X2, same model trucks but with different engines, same model trucks but with different axle ratings, or same model trucks but just different years. We don't care what the sticker says or even if there is a sticker. What the manufacturers put on that sticker is not law, it's just a to let the consumer know what that particular vehicle's design specs are.
The max weight laws are generally 20K on a single axle, 34K on a tandum axle and gross is 80K. These are federally mandated limits. I say "generally" because gross depends on the bridge length of your vehicle (distance between the front and rear axle) and the number of axles. The 34K can also vary depending the distance between the tandum axles. It could be more. Weight limits may also be posted less than the max on certain roads.
As an RVer you don't have to worry about exceeding the 20K single axle, 34K tandum axle, and 80K gross. There's no way you are going to be anywhere close to any of those numbers. Think about it. On your 5er you put 16" E range tires on a 5K or 6K rated axle. Your suspension and tires wouldn't handle 20K or 34K loads. And no way are you getting anywhere close to 20K on the steer or drive axle on your pickup. Your Big Country doesn't even come close to approaching 34K on the tandums. Your entire rig is likely to be about 20K total. You could not load your 5er and 2500 with enough toys to get close to exceeding the weight limits."
"Don't confuse registered weight with axle and gross weights. 2 competely separate things and one is not related to the other. The only thing in common between the 2 is the word "weight" but neither law is related to the other. It's confusing for those not familar with the law. When they hear/read the word "weight" they don't understand the difference between registered weight limits and axle/gross weight limits. The OP was inquirying about axle/gross limits.
I've explained registered weights ad nauseum in the past too. Registered weight limits are really nothing more than a tax. In fact if you look at your state statute for registration fees it's likely that particular statute is titled something like "registration tax fees". You pay a certain amount of tax, ie registration fee, to haul a certain amount of weight. For example, if you want to haul 8000 lbs in your pickup then you pay the tax (registration fee) for 8000 lbs. But if you then haul 11,000 lbs in your pickup you would be subject to fine for overweight on registration, ie, didn't pay enough tax to haul 11,000. We use to do force registration in IL where if someone as described in the example was stopped then we could force the driver to purchase higher registration plates right there before he was allowed to move further. The increased registration cost was in addition to the fine. Now we just write the citation and if there's a record of additional such violations, particularly if company owned, then inspections can be done on the company and force increased registration."
"You can register you vehicle for whatever weight you want to haul. However, if your truck's empty weight is 7500 lbs then of course it wouldn't do you any good to register it for 6000 lbs as empty you'd already be 1500 lbs over your registered weight. If you registered that same truck for 8000 lbs then you could carry an additional 500 lbs on the registered plates. If you want to haul more than the 500 lbs then you need to pay more tax, ie registration, to haul whatever load you want to haul. "
"None of the 12 different state I've towed with commercial plates in used "axle manufactors ratings" which is the big buzz that started this topic again. [/quote] That's because the manufacturer's ratings aren't law. Those are like the mattress tags. They just tell the specs for the product, they aren't statutes.
JIMNLIN said:
His comment on what vehicle weights they use for enforcement for our non commercial trucks was in his words mirrowed the same weight regs as dot uses.
Exactly. Axle and gross weights are the same whether the truck is commercial or private. Weight laws are in place to protect the roadways. An 80,000 lb commercial load weighs exactly the same as an 80,000 private load. The statutes do not specify commercial or non-commercial, the only concern is the weight on the road."
Full thread if you are interested
https://forums.goodsamclub.com/index.cfm/fuseaction/thread/tid/20577181.cfm