dan123dbl

I've searched around and can't seem to find the information I'm looking for.

I'm wondering how much weight (approximately) transfers to the front tires while loading the back of the box.

Lets say empty the truck weights 6500lbs, and you slide 2 4x4 pallets in the bed that weigh 2500lbs each. Would the truck be over the weight rating on the tires if they are rated for 3360lbs each?

Since the rear of these trucks weigh around 2500lbs, that would allow for 4220lbs on the rear tires, and the front would allow 2720lbs.

Are the rear tires overloaded with any more than 4220lbs in the box of the truck?

maybe368

Let me know what you find out, it's something that I maybe should have been concerned with ...Mark

patdaly

LOL, Mark, quit showing off............

To the OP, yes you are overloaded, will it hurt?

Probably not, but you will be running illegal.

As has been illustrated though, never use a visual indication to see if you are overloaded with one of these things....

u2slow

Supposing the load is exactly centered over the rear axle - then yes. In actual fact, our rear axle is a few inches aft of the center of the box, so that will transfer some weight forward. As for how much, I think I have to revisit a physics textbook

Other tire sizes for good load capacity are:
265/75R16E = 3415#
285/75R16E = 3750#
295/70R17E = 3970#
315/75R16E = 3850#

I have the same truck as you.... and the extra weight of the diesel powertrain and clubcab doesn't leave much for payload. Last summer's camping trip with my 8' camper, gear, and family I was rolling at 9500#. I think the door tag says 8800# Truck handled it extremely well - still 1" taller in the rear than the front. Only thing I'd change is soften up the ride and add a rear swaybar.

Your best best to pull into a scale station when they are closed. I use the one at Nordel & Hwy 17/91 junction.

dan123dbl

Barely even 500lbs back there
What are your tires rated for?




"legally" the truck can only carry about 2000lbs... which I think is bs so that's why I'm going off of my tire ratings. When I bought these tires I thought they'd be rated high enough, but now it's quite easy to approach the limit of them. The pallets I pick up never get loaded per weight instructions and the guys that load them say their weighing equipment isn't even accurate.

When it's time for some new tires i'll definitely be looking at some 295/70R17E.

Thanks for the tire info u2slow

j_martin

To safely (and legally) haul that kind of a load, you really need a D/W350.

dan123dbl

I have never put more than 4000lbs in the back, from what I know.

Which aspect is overloaded in your opinion? The rear axle / stopping ability?

maybe368

That was 30 bags of cement at 120 pounds each (in the USA it is 90 lbs max because we are, well less than wanting to haul 120 pound sacks) or 4600 pounds. The tool box has 91 gallons of diesel fuel at 7 pounds per gallon=637 pounds and at least 500 pounds of tools. The tires are rated at 3042 each, ouch, I was a tad overweight. Good thing it wasn't a smidgen or I would have broke something . I only had to go about a mile, but I was sweating bullets the whole way. The hardware store could not deliver it until the next day and I was paying 5 or 6 workers, soooo I said load 'er up! They said how many? I said why all of it of course. This isn't even the worst, I hauled a ton of floor tiles 60 mile during the house construction saga. these are bad ax trucks......Mark

P.S. I still had spring left in the rear suspension...

j_martin

1. Your example was 5000 lbs. payload.
2. What's your door sticker say?

No doubt the truck can haul around 3 tons or so. If you're off road, going slow and not far, that's OK, but if you haul that kind of weight at speed in public and something goes wrong, ie a tire blows, you are putting yourself and others in danger.

The duals on a 1 ton, for example, give you both effective short term carrying on the loaded axle in case a tire blows, and considerable directional stability if you blow a steer tire, especially if you are driving one of these beasts and can add a lot of torque to increase that directional stability.

1972RedNeck

9,000 lbs... did somebody just say "concrete bedliner"?

u2slow

The sad part is the factory only added a few bolt-ons to increase that number on the sticker. Because of that, the credibility of the rating goes out the window for me. I'm comfortable with my upgrades, so I'm going to use my W250 to 10,000# GVWR without batting an eye.

dan123dbl

I agree with u2slow. I feel my truck is safe at 10,000# GVWR. The 5000lbs was just as example. I'm not comfortable with overloading the tire ratings.

I also agree that a w350 would be ideal for hauling loads like that all the time. But my truck is empty 95% of the time and a srw is much nicer for a daily driver and winter driver.



I still am curious how much of the weight is distributed to the steer axle by loading the box up. By putting 4000lbs in the box you can't just be adding 4000lbs to the rear axle.

BlueW250

The axles are about 11 ft apart. When I set my fat .. butt .. in the seat the center of my weight is roughly 4'-6" back from the front axle. 4'-6" divided by 11 ft is 41%, the 6'-6" to the rear axle is 59%. Since I'm closer to the front more weight goes that way, switch the % to figure weight. So .. 59% of my 250lbs (148) goes to the front axle and 41% of my 250 (102) goes to the rear axle. I need to start driving to the gym.

Now I need to load a 4ft X 4ft pallet and it weighs 1500lbs. While I was napping on the couch my wife cleaned and waxed the truck so the bed is empty and I can push the pallet all the way foward using the forklift. The axles are 11ft apart and the center of the pallet is the center of the weight. From the front axle to the center of pallet it's 6'-6", front axle to the front of the box, plus 2', edge of pallet to center of pallet. Total distance to front is 8'-6", divide by 11, 77%. Distance to rear is 2'-6", divide by 11, 23%. Remember to switch the big number to the close axle. So the pallet adds 23% of the 1500lbs (345) to the front and 77% (1155) to the rear.

It's Sunday and the phone rings, my best friend has another pallet to haul. The problem is my idiot son borrowed the truck and the bed is full of trash from the party him and his buds threw last night and I got to get it hauled before the football game. It weights 1000 lbs and the guy with the forklift can only push it forward enough to make the back edge of the 4'x4' pallet even with the back edge of the lowered tailgate. The center of the weight is 3'-6" BEHIND the rear axle. That'll make the front end raise a bit. It acts like a playground teeter totter on the rear axle. 1000 lbs at 3.5 ft balances 327 lbs 11 ft away on the other side. Weight times distance will be the same on both sides. So 1000lbs times 3.5ft divided by 11ft will tell you how much weight is removed from the front axle (327). But, because it's got to go somewhere, it gets transfered to the rear. So just because your son can't clean out the truck you put 1000lbs in the bed and it reduces the load on the front axle by 327lbs and adds 1327lbs to the rear axle. That sucks.

In summary, don't let your son borrow your truck and take your wife out to dinner for cleaning it up real nice.

Hope you guys can follow my jabbering.

Thank you,
BlueW250

thrashingcows

Thanks Blue....

j_martin

Short translation. A little applied high school math, or even common sense used to properly place your load helps a whole heap.