Do I have this math/ understanding right?
Got a new 2020 GMC 2500 with DMax. Door sticker says just over 3300 for payload. Tires are 3750. So... manufacture's say hitch weight for xx toyhauler is.... let's say 3500lbs... im guessing tha...
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If your goal is to stay within all the specs, the tires aren't really relevant (assuming they are not lower rated replacements from OEM). The manufacturer already accounted for them with the playload figure.
Yes, loading the garage will reduce the pin weight but probably not as much as you might hope.
As mentioned, if the pin is 21ft ahead of the axles and the CG of the toys is 7ft behind the axles, your 2000lb of toys will only take around 660lb off the pin weight...except anything you load ahead of the axles will add weight back onto the pin. So unless you run empty except the toys, don't expect the pin weight to go down by any appreciable amount.
Another issue...Unless you are a 150lb driver in an otherwise empty truck, you already used some of your payload. Wife, kids, dog, firewood, tool box, hitch, etc..all count against the payload...So you could be looking at a remaining payload of maybe only 2500lb if you have a family of 4 and pack like normal people.
Fully loaded (with toys) you should be looking at 20-25% of the GVW of the trailer on the pin. Only way to tell for sure is to take it down to the scales fully loaded with family aboard and get the real weights.
Yes, loading the garage will reduce the pin weight but probably not as much as you might hope.
As mentioned, if the pin is 21ft ahead of the axles and the CG of the toys is 7ft behind the axles, your 2000lb of toys will only take around 660lb off the pin weight...except anything you load ahead of the axles will add weight back onto the pin. So unless you run empty except the toys, don't expect the pin weight to go down by any appreciable amount.
Another issue...Unless you are a 150lb driver in an otherwise empty truck, you already used some of your payload. Wife, kids, dog, firewood, tool box, hitch, etc..all count against the payload...So you could be looking at a remaining payload of maybe only 2500lb if you have a family of 4 and pack like normal people.
Fully loaded (with toys) you should be looking at 20-25% of the GVW of the trailer on the pin. Only way to tell for sure is to take it down to the scales fully loaded with family aboard and get the real weights.
