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Octaneforce's avatar
Octaneforce
Explorer
Mar 16, 2020

I weighed my rig. Need help with math

So i got my 30ft class a weighed today. With me in it, it weighed 13,060lbs total, 8400lbs rear, and 4660lbs front.

Now i know i should have fully loaded it but i didnt have the time or energy. With the basic math i did, Id say in fluids, gear, and people, I’ll add about 1500lbs, mostly on the rear axle.

I did this because i want to order coil springs from supersteer to replace my crummy front airbags. The springs im torn between come 4400-4900lbs or 5000-5300lbs. Im leaning towards the 5000lbs springs. All i need is 2 additional passengers and I’ll be beyond 4900lbs

My other question is how to calculate my tire pressure. My tires say 3525lbs at 110psi single and 3305lbs double. I keep my tires at the recommended 110psi and my coach rides like a brick. Id like to run less psi but im not sure how to extrapolate the numbers to determine my minimum psi needed.
  • without loading it as you would for travel...food, fuel, fresh water, lp, supplies, pets, clothing, people....you're just guessing and your guess is as good as mine. why not just assume your axles will be at max load..gross axle weight rating (GAWR)? of course that'll also be a guess. do it the right way.