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1999-2007 Upgrades and Aftermarket - General Upgrading or adding OEM or aftermarket equipment to your 1999-2007 Super Duty. Please confine discussion of topics in this forum to those items that are not engine-specific.

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Old 03-03-2008, 11:56 AM   #1 (permalink)
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Wheel weight ratings

I am going to go back to a E rated tire on my 99 350 cc sb. My question is do the new chrome alloy wheels on an average stack up to the weight rating of the tires. ??????


The tires I am thinking about buying are Goodrich TA/KO 305/65/18 3525 lbs @ 65psi

Currently I am running the same tire different size ,315/75/16 D rated


Hate to buy new tires and have the rims be the weak link
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Old 03-03-2008, 05:41 PM   #2 (permalink)
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If you mean aftermarket wheels, then be very, very careful. The weight rating and PSI max should be stamped into the wheel somewhere - maybe inside the rim.

But the big concern is that you buy only hub-centric wheels. Most aftermarket are the cheaper lug centric. Your truck is designed for hub-centric wheels, and lug-centric wheels do not meet Ford specs.

"Hub centric" means the pilot bore - the big hole in the center of the wheel - is exactly 4.93" diameter. Bigger than 4.93" and the wheel is not hub centric. The only makers of hub centric wheels for your truck are Ford, plus Alcoa and Weld. There may be others by now, but I haven't seen any.

Weld is now owned by American Racing, and they have lessened the Weld product somewhat. If you buy a Weld wheel, you have to be certain you get the one with 4.93" center bore. Under American Racing's rule, Weld now makes the cheaper lug centric wheels as well as the good ones. So read the specs carefully. Here is one Weld wheel that comes in either 17", 18" or 20" diameter by 10" wide, which whould be great for the LT305/75R18D you're looking at: Weld Racing Wheels Forged Truck, SUV, Car, Motorcycle and Racing Wheels

Alcoa aftermarket wheels are fine too, but they have only a few sizes and nothing in the monster-truck range. If you want reasonable size wheels, then try the Alcoas from Southwest Wheel Company Steel and Aluminum Truck Wheels
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Old 03-03-2008, 06:35 PM   #3 (permalink)
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Alcoa available in 16" hub centric wheel for single rear wheel 99-04 superduty.

Weld available in two different styles 16" hub centric for dual rear wheel 99-04 superduty.

Weld available in several different styles, 17", 18", 20" hub centric for single rear wheel 99-04 superduty.
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2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
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Old 03-03-2008, 09:43 PM   #4 (permalink)
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Thanks for the info, I have stepped up to a bigger fifth wheel, the reason for the questions.

I would have to guess the failure, if you get one, would be breaking of lug bolts because they are bearing all the weight and not a collapse of the rim ??? Rims are strong enough, but they get no help from the hub ???? I guess that is why you keep hearing on these rims to check your lug nuts.

I might have to give up here and go back to my stock rims and tires. I am thinking they are hub-centric ????? I will measure.
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Old 03-03-2008, 10:46 PM   #5 (permalink)
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Do you have dual rear wheels or single rear wheels. If you have single rear wheels, then weld does have a couple of choices in hub centric 18" wheels. I haven't checked the weight rating on them though. If you have dual rear wheels, then I have only seen 16" hub centric wheels available.
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2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
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Old 03-04-2008, 10:11 AM   #6 (permalink)
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Do you have dual rear wheels or single rear wheels. If you have single rear wheels, then weld does have a couple of choices in hub centric 18" wheels. I haven't checked the weight rating on them though. If you have dual rear wheels, then I have only seen 16" hub centric wheels available.

My truck is the early 99 350 SRW, Thanks
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Old 03-04-2008, 05:18 PM   #7 (permalink)
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Weld Racing Wheels Forged Truck, SUV, Car, Motorcycle and Racing Wheels

Weld web site lists several hub-centric 18" wheels for the 99-03 superduty, but I can't find any weight ratings for them. I suggest that you call Weld and ask them directly. Here is their phone number.

800-669-9353
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2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 170,000 miles, repairs so far: starter, batteries, cps, brakes, tires.

2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
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Old 03-04-2008, 05:53 PM   #8 (permalink)
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Hate to buy new tires and have the rims be the weak link


You hit the nail on the head, and it is in fact going to be a true statement. In all most all cases tires are rated well above what the stupid wheel is rated for.

No clue why they do that

Check out this link Rickson Truck Wheels and Accessories this is an extreme example but the damn wheels are only rated at 3500 lbs tops. The tire is easily rated at 2000 lbs more than the wheels.
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Old 03-04-2008, 07:22 PM   #9 (permalink)
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Here's a new one that I'm looking at. These are hub centric wheels. This is not Weld Wheels.

Greg Weld Wheels
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Old 03-04-2008, 07:46 PM   #10 (permalink)
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Rickson Truck Wheels and Accessories

Since these are for drw, 3500 lbs per wheel times 6 wheels equals 21,000lbs. GVWR for the truck is only 11,500 lbs; so the wheels certainly aren't the limiting factor.

Rickson Truck Wheels and Accessories

These wheels are for srw. Weight rating is 5,000 lbs times 4 wheels equals 20,000 lbs. GVWR of the truck is only 8,800 lbs; so again, the wheels are far from being the limiting factor. Yes, they could make them stronger at higher cost and/or greater weight, but they are already about twice as strong as they need to be for the gvwr of the truck.

Greg Weld Design -

These wheels for srw have weight rating of 3200 lbs times 4 equals 12,800 lbs, still more than the 8,800 lb gvwr of the truck, but not as great of a margin for safety.
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2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 170,000 miles, repairs so far: starter, batteries, cps, brakes, tires.

2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
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Old 03-07-2008, 09:57 PM   #11 (permalink)
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[quote=DonWarkentin;1526252]Rickson Truck Wheels and Accessories

Since these are for drw, 3500 lbs per wheel times 6 wheels equals 21,000lbs. GVWR for the truck is only 11,500 lbs; so the wheels certainly aren't the limiting factor.

I have changed my mind a little on the tire size, I am going to a 285/65/18 little smaller and a bit more weight rating 3640 lbs. but would like to stick to a aftermarket wheel, that I was told by the vendor had a weight rating of 3200 lbs, did not ask for air pressure , but will. The big reason for wanting this particular wheel is I have a chance to buy a nearly new set for about half the retail price. My question is the rims are my wink link, my 5ver has a pin weight of 2500-2800 depending on how I load it. Loaded weight of the 5ver will max out at about 12,500, have not put it on the scales yet. With these weights will the tires and rims be adequate ??? any suggestions or cautions, or am I forced to a heavier rated wheel ??? Thanks

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Old 03-07-2008, 10:24 PM   #12 (permalink)
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Just 1 suggestion/caution for you. Before you commit spend some Google time searching for 18" tires. Then grab your local phone book and start calling tire shops and see what they have in stock.

What you'll probably find is a whole lot of nothing for an 18" tire. They are generally a special order deal. Any podunk tire station in the middle of no where can bring you a 16 or 19.5" tire, if you blow one out going down the road. You'll be stuck overnight or so if you don't have a spare 18".
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Old 03-08-2008, 09:31 AM   #13 (permalink)
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Just 1 suggestion/caution for you. Before you commit spend some Google time searching for 18" tires. Then grab your local phone book and start calling tire shops and see what they have in stock.

What you'll probably find is a whole lot of nothing for an 18" tire. They are generally a special order deal. Any podunk tire station in the middle of no where can bring you a 16 or 19.5" tire, if you blow one out going down the road. You'll be stuck overnight or so if you don't have a spare 18".
You have a point, the 18" is becoming more popular all the time, stock superdutys are coming out with them from the factory, but do the tire stores carry them in stock, Thanks
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Old 03-08-2008, 04:40 PM   #14 (permalink)
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[quote=up2nogood;1528729]
Quote:
Originally Posted by DonWarkentin View Post
Rickson Truck Wheels and Accessories

Since these are for drw, 3500 lbs per wheel times 6 wheels equals 21,000lbs. GVWR for the truck is only 11,500 lbs; so the wheels certainly aren't the limiting factor.

I have changed my mind a little on the tire size, I am going to a 285/65/18 little smaller and a bit more weight rating 3640 lbs. but would like to stick to a aftermarket wheel, that I was told by the vendor had a weight rating of 3200 lbs, did not ask for air pressure , but will. The big reason for wanting this particular wheel is I have a chance to buy a nearly new set for about half the retail price. My question is the rims are my wink link, my 5ver has a pin weight of 2500-2800 depending on how I load it. Loaded weight of the 5ver will max out at about 12,500, have not put it on the scales yet. With these weights will the tires and rims be adequate ??? any suggestions or cautions, or am I forced to a heavier rated wheel ??? Thanks

It sounds to me that you are looking at a seriously overloaded truck to try to carry 2500-2800 lbs on single rear wheels. Take a look at the gvwr of the truck. I'm guessing that with srw its probably about 8,800 lbs. Take your truck to the scales to see what it weighs with a full tank of fuel and whatever load of people and gear you will have in the truck. I'm guessing that just the empty truck weighs at least 7,000 lbs, and with people and fuel and gear, you are probably looking at 8,000 lbs or more without the 2500-2800 lbs of pin weight.

So to answer your question, yes, you will need much stronger wheels and tires to carry that much weight, and you will also need much stronger suspension. Maybe look into adding an air bag suspension together with 5,000 lb wheels and tires. The Rickson 19.5" wheels can carry up to 5,000 lbs each, and 19.5 " tires are available that can carry a lot of weight.
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2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 170,000 miles, repairs so far: starter, batteries, cps, brakes, tires.

2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.
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Old 03-08-2008, 04:57 PM   #15 (permalink)
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[quote=DonWarkentin;1529234][quote=up2nogood;1528729]


It sounds to me that you are looking at a seriously overloaded truck to try to carry 2500-2800 lbs on single rear wheels.


Thanks for the imput, I was only hoping deep down that it would work, and kind of knowing that it won't. I knew I was headed to a dually. Sure like the truck, I have owned it for nearly 10 years, does a great job of towing and handling this new 5ver. Oh well.
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