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Old 12-08-2014, 09:53 AM   #365
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So does the manufacturer weigh each car as it comes off the assembly line, print off the sticker and attach it to the vehicle door frame?

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Old 12-08-2014, 09:58 AM   #366
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One thing that can affect payload is wheels and tires. 20 inch wheels and lower profile tired are going to give you less payload than 18 inches. Another thing is the load rating of your tires. Most 1/2 tons seem to come with P-metric tires, which run at 30-40 psi. Go up to "LT" (light truck) tires running at 60-80 psi and the load rating of the tire nearly doubles. Of course these tires are going to ride hard unladen. I've always wondered whether these "max payload" packages are any more than stronger 18 inch wheels and LT tires. You'll never see a 3/4 ton delivered from the factory with 20 inch wheels or P metric tires. Like a lot of Airstreamers, I'm at the top of the range for 1/2 ton cargo capacity but am not really excited about going to a 3/4 ton diesel. 3/4 ton gas doesn't make any sense to me. You don't get any more power than a 1/2 ton motor and your pulling at least 1000 pounds more vehicle weight. That equals more fuel burned, more engine noise and less performance. Just FTR you can get an F-150 or a Silverado 1500 crew cab 4wd with about 2000 lbs cargo capacity. Look for the 7650 GVWR on the Ford. RAM 1500 is just hopeless unless you get a single cab and 2wd, or you travel alone-assuming you're wanting to pull something larger than 23 feet. The eco diesel is the worst in that respect, although people seem to overload them with no ill effects.
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Old 12-08-2014, 10:23 AM   #367
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I have the standard size tires on my Tundra 255/70x18 but they are on aluminum rims.

I have Michelin and they have a maximum pressure with over 2000lbs per tire which exceeds my GAWR for the rear and front axles.

I'm going to replace my tires in the spring, plenty of tread but I've noticed some cracks in the side walls are developing. I'm guessing these tires are almost 4 years old. The truck is not a daily driver. I'm thinking of getting tire covers because it sits outside.

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Old 12-08-2014, 11:26 AM   #368
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The door stickers are a federal requirement. I didn't see anything about subtracting an additional 380 lbs., but maybe I missed it. It was kind of dark in the garage when I looked. I also have the TRD package, so I don't think that is it.

I replaced the OEM Goodrich tires with Michelin LTX tires. The truck rides much smoother with those and is more like an SUV than a pickup. That's not unusual with current 1/2 ton pickups. I don't think the tires are going to change payload, but I don't really know. My impression is that the usual difference between 1/2 ton and 3/4 ton is in the suspension and not the drive train. But truck companies have so many versions of trucks that there could be other upgrades in certain models. It can be very confusing to sort it all out.

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Old 12-08-2014, 11:38 AM   #369
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3/4 ton trucks have heavier running gear. Springs, bearings, axles and perhaps brakes.
The 380 pounds looks to me like the weight of the front axle and transfer case. . Being 4WD.
My '08 Tundra 2WD came with Bridgestone 275/R18 P rated tires. Just replaced them with the same tire. Have had absolutely no problems with handling. Even in rain or snow.


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Old 12-08-2014, 05:32 PM   #370
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So does the manufacturer weigh each car as it comes off the assembly line, print off the sticker and attach it to the vehicle door frame?

Kelvin
No. Car manufactures have a designed base weight and as options are added then the total vehicle weight changes. Technically the weights are not exact to the ounce. And these are massed produced vehicles so the designed weight and optional weights should be pretty close to actual. many optional choices add almost no weight like paint options. Then there are things like AC that can add a significant amount.

This can make a difference to towing loads especially when loading at the max capacity. And know there are specific axle loading restrictions as well. In some cases it is possible to be with in design limits of the total vehicle capacity and over capacity with one axle.

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Old 12-08-2014, 05:53 PM   #371
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Gene...you inspired me to trek across the street and check my door sticker. My 2008 Tundra 2WD SR5 Double Cab with Trailer Pkg. and TRD Off-Road package, shows cargo weight at 1475 lbs. But...there is also this sticker which tells me to subtract 380 lbs. Which brings me down to 1100 lbs? So with wife, tonneau cover, tool box and about a 12-pack (no ice) I'm over loaded. Any idea what the label could refer to?

Gene
My dealer-installed running boards got me a -85lbs sticker, which is approx what they weigh. I'd take a look at any port or dealer installed options and any packages (TRD off road, Sports Appearance Pkg?). Or peel the sticker off.
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Old 12-08-2014, 06:49 PM   #372
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The sticker should account for 4WD and TRD and tow packages as that is the way the truck was built. Peeling off the sticker is probably illegal although I doubt any cop would look at it.

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Old 12-08-2014, 07:33 PM   #373
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In the back of my Tundra Owners Manual there are several pages of the weight and towing capacity of each model. It goes so far as to list the different cab models, box length and trim package.
I can't tell you if the door post stickers are different between my 2WD and a 4WD. One would assume so.
It really doesn't make sense to me that 4WD would have less weight carrying capacity than a 2WD. Because the front axle weight is not carried by the truck. I can see the transfer case weight being included, but not the front axle.



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Old 12-08-2014, 08:15 PM   #374
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It really doesn't make sense to me that 4WD would have less weight carrying capacity than a 2WD. Because the front axle weight is not carried by the truck. I can see the transfer case weight being included, but not the front axle.
The 4X4 is additional weight in transfer case that is suspended and the front axle that isn't suspened however it is sort of "towed" and has to be braked and accelerated as the rest of the mass of the tow vehicle. More mass that comes with the TV the less the TV can tow and carry.

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Old 12-09-2014, 12:46 PM   #375
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A simpler way to say it is that a front propeller (drive) shaft and associated parts are necessary in the front axle for 4WD, that weight plus the transfer case are all subtracted from payload.

The owner's manual does have a lot of information on all sorts of versions of the Tundra as does the booklet I have from 2007. The sticker should be the same, but if they differ, use the lowest weight.

There were 2 different running board options in 2007 I think. Ours were dealer installed and then we added a tonneau. I asked the tonneau dealer how much it weighed and he said "about 100 lbs." I would have guessed that and I suspect he guessed too. I figured the two options weighed about 150 lbs., but it could be more. Neither option was known at the factory, so subtract from the sticker and go on a diet.

Some people upgrade the suspension with air bags or an additional leaf on the rear springs. This may help, but other parts in the suspension or drive line may not be up to it, so you still have the same 1/2 ton truck. I asked an suspension expert about this and he agreed, but he would, for a price, install air bags or an added leaf spring to anyone who wanted it and warn him it might not be enough. Unless you happen to have access to a testing lab to check all the other parts, you'll never know whether some part can't handle the extra load until it breaks. Certainly the manufacturer won't tell you except to say your warranty may be voided and don't do it.

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Old 12-09-2014, 01:03 PM   #376
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Lets face it, anyone towing and Airstream 25 or larger is over payload on our Tundras. I can't do anything about it short of replacing my Tundra or downsizing my AS.

Question, I see there are two tire options for the 18" wheel Tundra; 255/70x18 and 275/65x18. I have the former and they will need replacing soon. Should I go with the 275/65x18 now. I have aluminum rims on my non TRD SR5. Both sizes are 31" in diameter.

Thanks.

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Old 12-09-2014, 06:47 PM   #377
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Not true. I tow a 26' Argosy with my '08 Tundra. The coach weighs 5,500#'s when ready to travel. The truck weighs about the same. The hitch weight is 700#. I still have over 400#'s of capacity after me, my wife and dog are on board.
I did have one occasion when we were traveling to CA in December from Nebraska. I decided to carry a construction style generator and 14 gallons of additional fuel. In case we were caught in a blizzard. That additional weight put me over the GVWR rating of the truck.
Was I concerned? NOT AT ALL. It's a Toyota.


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Old 12-10-2014, 09:06 AM   #378
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I would go with the wider sidewall, assuming there's no change in the rated load capacity of the tire. Probably give you a bit softer ride and protect the rim better from chuckholes.
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