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Open Roads Forum  >  Truck Campers

 > Cooper Tires - problems - Now what do we do.

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JIMNLIN

Oklahoma

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Joined: 09/14/2003

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Posted: 07/12/12 06:30am Link  |  Print  |  Notify Moderator

You should be worried.
Adding the extra spring capacity was a good idea on your F350 SRW. Now the tires and wheels need to be upgraded to 19.5" to complete the proper load carrying capacity for the rear axle.

Your over the Fords axle ratings but under the axle manufacturers rating so I would make sure it has fresh synthetic at least once a year if the truck is on the road a lot.

Or move up to a newer F350 DRW with those big 9000 RAWR numbers with 11000 lb + of tire capacity.


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

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Reddog1

El Dorado, CA

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Posted: 07/12/12 10:40am Link  |  Print  |  Notify Moderator

I would be looking at the availability of 19.5s, while on the highway. I would not drive over 55 MPH, especially when the road is supper hot. As stated, the spring only increased the load carrying ability, nothing else.

I personally would not be concerned with being 2000 lbs over the door decal capacity. Read it carefully, if it is like others I have read, it says the capacities with a given tire and wheel size. This point has been argued time and time again. You should probably put your flack suit on, due to the many lectures you will probably receive on exceeding the weights of the door decal. I doubt I will participate in the debate/argument I expect will follow. I will say, no one has ever posted a source that gives vehicle codes stating the door sticker is the determining factor in a pick-ups load capacity. Canada could be an exception. I can't prove it, but I bet there are as many trucks with TCs that are 2000 lbs over, than there are at or below the door sticker. I do not know of any sitting broke down beside the road. You drive your truck knowing it is big and heavy, always remembering it does not stop or maneuver like the family sedan.

It is very difficult to argue the load capacity of the tires. They are clearly marked.

Wayne

ticki2

NH

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Posted: 07/12/12 11:16am Link  |  Print  |  Notify Moderator

houstonstroker wrote:

Take a look aat your LT tires. You will not see a maximum psi listed. It states that 80 psi is the minimum pressure needed to carry the rated load. Minimum pressure. If you are a regular reader of Trailer Life, you would read where the experts reccommend adding 10 lbs to the minimum, if you are at or near the maximum weight.


I took a look at my Bridgestone 265/75/16 load range E tires .
Printed on the sidewall :

max load 3415 lbs for singles @ 80 max psi

I suspect Trailer Life was talking about ST tires . If you look at the GY ST tire info it states that you can increase the tire pressure by up to 10psi ( they are rated at 65psi ) IF you are under the max load for the tire to increase the speed limitation of 65mph for which they are rated . GY does not have that statement for LT tires .

* This post was edited 07/12/12 11:23am by ticki2 *


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SoCalDesertRider

Arizona desert

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Posted: 07/12/12 04:49pm Link  |  Print  |  Notify Moderator

Reddog1 wrote:

I would be looking at the availability of 19.5s, while on the highway. I would not drive over 55 MPH, especially when the road is supper hot. As stated, the spring only increased the load carrying ability, nothing else.

I personally would not be concerned with being 2000 lbs over the door decal capacity. Read it carefully, if it is like others I have read, it says the capacities with a given tire and wheel size. This point has been argued time and time again. You should probably put your flack suit on, due to the many lectures you will probably receive on exceeding the weights of the door decal. I doubt I will participate in the debate/argument I expect will follow. I will say, no one has ever posted a source that gives vehicle codes stating the door sticker is the determining factor in a pick-ups load capacity. Canada could be an exception. I can't prove it, but I bet there are as many trucks with TCs that are 2000 lbs over, than there are at or below the door sticker. I do not know of any sitting broke down beside the road. You drive your truck knowing it is big and heavy, always remembering it does not stop or maneuver like the family sedan.

It is very difficult to argue the load capacity of the tires. They are clearly marked.

Wayne
Fully agree about the tires.

California commercial vehicle code actually cites the GVWR of the truck as the maximum allowable weight for the truck. I read this when I was registering my 11,000 GVWR commercial cab/chassis truck for 15,000 lbs GVW/GCW. I have 15K weight stickers to be displayed on each side of the truck for CADMV/USDOT registration and weigh scale purposes. This is a contradiction in the law though, because the law does say the truck cannot legally weight more than it's GVWR....


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louiskathy

Oregon (presently)

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Posted: 07/12/12 07:24pm Link  |  Print  |  Notify Moderator

We've been letting it sink in. We feel truly blessed that we didn't have a bigger issue than two tires with bulges on this trip.

All those commercials.. "Ford Tough"
The sticker on the camper "Lightest in it's class"

I can tell you that it gave us a false sense of well being that the scales took away.

Now it's either sell the farm or buy the farm.



Going with the 19.5's is the only way to go.


Kathy

jimh425

Western WA

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Posted: 07/12/12 08:25pm Link  |  Print  |  Notify Moderator

The Ford was tough. Lightest doesn't mean light enough.

There are other benefits of 19.5s besides more capacity. The tires are much tougher with more plys for less possible flats. They are much stiffer which makes the rig sway less. Generally, they also last longer. Overall, it's a significant improvement.

For the record, my truck carried my camper on a 1000 lb trip with no issues. I upgraded to 19.5s to give that extra margin for error, and figured it wouldn't hurt. I was able to recoup some money by selling my factory rims. If I remember right, I got about $500 which kept the cost for the full upgrade less than 2K.


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Bedlam

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Posted: 07/12/12 08:39pm Link  |  Print  |  Notify Moderator

I just upgraded to four 245/70R19.5 tires on Vision rims for $2k delivered to my door. Anything you recover from the sale of the OEM's will help.


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louiskathy

Oregon (presently)

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Posted: 07/12/12 08:42pm Link  |  Print  |  Notify Moderator

jimh425 wrote:

The Ford was tough. Lightest doesn't mean light enough.

There are other benefits of 19.5s besides more capacity. The tires are much tougher with more plys for less possible flats. They are much stiffer which makes the rig sway less. Generally, they also last longer. Overall, it's a significant improvement.

For the record, my truck carried my camper on a 1000 lb trip with no issues. I upgraded to 19.5s to give that extra margin for error, and figured it wouldn't hurt. I was able to recoup some money by selling my factory rims. If I remember right, I got about $500 which kept the cost for the full upgrade less than 2K.


2K ... That gives me another number to think about. Kinda took my mind off of the weight.

Reddog1

El Dorado, CA

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Posted: 07/12/12 08:44pm Link  |  Print  |  Notify Moderator

SoCalDesertRider wrote:

... California commercial vehicle code actually cites the GVWR of the truck as the maximum allowable weight for the truck. I read this when I was registering my 11,000 GVWR commercial cab/chassis truck for 15,000 lbs GVW/GCW. I have 15K weight stickers to be displayed on each side of the truck for CADMV/USDOT registration and weigh scale purposes. This is a contradiction in the law though, because the law does say the truck cannot legally weight more than it's GVWR....
Unless I misunderstand, this is for California commercial vehicles, not a truck and TC for personal use.

Please correct me if I have misunderstood.

Wayne

Reddog1

El Dorado, CA

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Posted: 07/12/12 08:52pm Link  |  Print  |  Notify Moderator

louiskathy wrote:

... Going with the 19.5's is the only way to go.


That would be, and was my decision. What we cannot properly describe is the positive difference in how your rig will handle. The 19.5s will correct problems you do not realize you have. You can expect a stiffer ride when there is no load on your truck, even if you air down.

You can just do the rear with the 19.5s. When you research the tires, keep focus on the load capacity, not load range. You can get 19.5s that will carry very little more than what you have.


Wayne

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