Suspension weight capacity

Hello everybody this is my first Toyota truck. It's a 2025 Toyota Tundra SR5. Lunar rock is the color. It's fantastic I really like it. But....
I build a lot of decks and fences and I'm constantly putting a lot of weight back there. The manual says I can put like 1,960 lbs in the bed. I'd like to upgrade it somehow so I can get at least $3,000 if not 4,000 lbs in the back. Like a full pallet of concrete if need be. Any ideas or is that even possible. I know I can upgrade the suspension and shocks but how much weight extra will that give me.

 

Congratulations on the Tundra!! I'm a new owner as well.

You want to more than double the carrying capacity of the truck? You need a trailer. Your truck should be able to two around 11,000+ pounds. If you want to carry it in the bed, you need a Chevy/Ford/Ram HD 3/4 or 1 ton.

While you may be able to stiffen the springs to avoid the back end squatting, it won't change the rated capacity of the truck. It won't change the rated capacity of the rear axle. Oh, and the tires probably would need to be upgraded as well.

 

You need to ignore the manual. Look at the sticker inside the driver door jamb for your trucks payload.

As for the absurd amount of weight you want to put in the truck, you can't load a half ton truck up to that level regardless of what you do to the suspension. It will be severely overloaded. I'm not sure you can put that much in the bed of an HD 3500 truck without overloading.

You need a trailer.

 

Thank you both and I agree, I think I need to get a trailer. I could tow so much more weight that way. Congrats on the new ride Tville! I just love sports mode and the way the rear window rolls down like a regular window

 

Welcome and Try Tow+ mode it’s even better.

 

Welcome from LA (Lower Alabama)!

 

Welcome from NC

 

You need a bigger truck or a trailer. You can’t increase the weight capacity of the truck. That’s dictated by the frame strength. Not the suspension. Suspension plays a role, but you can’t physically add load capacity to the truck. Especially not 3,000 lbs over what it’s rated for.