DRW vs SRW

ford truck guy wrote:
My tires run when I am towing at about 98% capacity ...

What most are missing is the fact that when ANYONE puts a capacity on something, that does NOT mean that as you get close, you shouldn't do it...

It simply means that whatever is being rated has been tested to perform at that particular weight.. safely under proper conditions.

If an overhead crane is rated at 3 ton, you can lift 3 ton all day, everyday and as long as you don't abuse the equipment, your good to go.

My big trucks are rated at 80,000# ... we run at that weight almost daily

I look at tires the same way...

*** DISCLAIMER *** It is Just my opinion on the subject.....

It's actually not just your opinion. In the heavy duty truck world, these ratings are meant for the life of the tire/truck/whatever. A tire rated at 3,195 pounds and 108 mph should be able to support that load, at that speed, for its useful life. P tires are not rated that way but LT are.

Like you said, safe when used correctly.

Outside of that? Well you'll find out.

If you can afford it a Dually is your best option

Doesn't a DRW have 6 brakes???? LOL Most non semi driving folks think big rigs have 18 brakes cuz they have 18 tires and should be able to stop just as quick as a car. HA !

This reply is meant just to bee funny.

philh wrote:

4x4ord wrote:
but, if you're wanting to tow a 22000 lb tandem axle fiver with your new SRW you might be very disappointed to find out the 5000 lb pin weight of your fiver will cause the rear axle weight rating of your truck to be exceeded by 1200 lbs.

22,000 lb tandem axle 5er? Do they make such a thing?

Mine weighs 24k.

4x4ord wrote:
but, if you're wanting to tow a 22000 lb tandem axle fiver with your new SRW you might be very disappointed to find out the 5000 lb pin weight of your fiver will cause the rear axle weight rating of your truck to be exceeded by 1200 lbs.

22,000 lb tandem axle 5er? Do they make such a thing?

FishOnOne wrote:
Also I don't believe there's any braking performance benefits of a DRW vs a SRW truck. Perhaps a slight advantage of a DRW additional wheels to dissipate heat from the rear brakes.

Or the dual wheels shield the air from flowing over the brakes?

jbc28 wrote:
I bought a 16k gvwr toyhauler back in 2010. I wasn't planning on buying one, but it was a very good deal. I had a CC 4wd 2005 F250 at the time with airbags. It pulled our old 10k 5'er very well. On the drive home with the toyhauler I knew I had to buy a dually. It was white knuckle driving. Turns out that 16k 5'er had a 3700 lb pin weight. I bought a DRW F350, and it was so much more stable. I eventually bought a 2018 F450. It pulls so good you could forget that you're towing. Last year we bought a 20k gvwr toyhauler, and I couldn't feel a difference in towing it vs the older one. The F450 is easier to maneuver than the old SRW short bed.

Your experience is similar to mine; I was very surprised how much more stable towing was when I bought my first dually which was a 2003 F-350 Lariat.

rhagfo wrote:

Cummins12V98 wrote:

ppine wrote:
I look at this way. DRW are specialized towing rigs. SRW works for everything. DRW trucks are always for sale. You decide.

“Always for sale”.

Bizarre statement!

I agree, needed to travel 300 miles to find a good used one, not a lot near me!

There are WAY more SRW trucks for sale in my neck of the woods than DRW. I suspect that it's that way in most places.

Also, with respect to brakes, I don't know if this is still the case, but a few years ago DRW trucks had larger brakes than SRW. I had first hand experience with this when I worked for my last employer and looked after the fleet.

Grit dog wrote:

Lantley wrote:

fj12ryder wrote:

FishOnOne wrote:
Also I don't believe there's any braking performance benefits of a DRW vs a SRW truck. Perhaps a slight advantage of a DRW additional wheels to dissipate heat from the rear brakes.

Hmm, I would think the additional friction material on the ground, i.e. 6 tires instead of 4, would offer more than just a slight advantage. I'm referring to better braking while towing.

More rubber on the ground is a significant, noticeable advantage.

Fish is right, until you exceed the tractive capabilities of the tires and pavement. But who’s to say “half” the ground pressure x twice the surface area won’t yield the same results? Depends on many other factors
Lantley, by your analysis, duallies have worse braking performance since front brakes do more work than reads and front tires on a dually have a smaller contact patch.

Another ad nauseum thread down the drain.......whooosh!

I did mention in my post that I was referring to "while towing" when much more of the weight will be on the rear wheels.

Grit dog wrote:

Lantley wrote:

fj12ryder wrote:

FishOnOne wrote:
Also I don't believe there's any braking performance benefits of a DRW vs a SRW truck. Perhaps a slight advantage of a DRW additional wheels to dissipate heat from the rear brakes.

Hmm, I would think the additional friction material on the ground, i.e. 6 tires instead of 4, would offer more than just a slight advantage. I'm referring to better braking while towing.

More rubber on the ground is a significant, noticeable advantage.

Fish is right, until you exceed the tractive capabilities of the tires and pavement. But who’s to say “half” the ground pressure x twice the surface area won’t yield the same results? Depends on many other factors
Lantley, by your analysis, duallies have worse braking performance since front brakes do more work than reads and front tires on a dually have a smaller contact patch.

Another ad nauseum thread down the drain.......whooosh!

Your making it too complicated. Doesn't involve front brakes. Both SRW and DRW have front brakes.
The larger surface area of the dually tires creates more friction against the pavement.
The whole ground pressure thing doesn't come into play unless you're talking snow and ice. On dry pavement both tires make solid contact with the road
Consider the truck brakes are designed to stop the truck within its the GCWR. A DRW will always have a higher GCWR vs. its SRW counterpart.
MY DRW truck exhibits noticeably more braking power vs. my SRW trucks.