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Open Roads Forum  >  Tow Vehicles

 > Firestone R4 Tech Suspension

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majorloser

Central Florida

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Posted: 05/06/12 03:59pm Link  |  Print  |  Notify Moderator

Interesting. I have a SRW Ram. I know that there is different kits for both the SRW and DRW vehicles.

The application guide list the different component stock number in each kit. Might want to double check that you got the right system. The R4Tech systems start on page 20:

http://www.firestoneindustrial.com/site-........ride-rite/pdf/2011_Application_Guide.pdf


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porthole

NJ

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Posted: 05/06/12 08:37pm Link  |  Print  |  Notify Moderator

I know about the different kits, actually had to wait until the DRW kits were put assembled.


Duane

porthole

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Posted: 06/23/12 08:13am Link  |  Print  |  Notify Moderator

Well after over a month of no help from firestone of sanluis rassaini.....

Firestone tech r4 thoughts and opinions.

Keep in mind this is all related to an install on a Ford 6.7 F-350 DRW, your mileage may vary.

First off, after the sale tech support sucks – period.

With some of the issues I have the flat out answer received from sanluis rasssani was that my application was a very small market share and didn’t justify their attention – and that was from Tony, the person you see in the r4 youtube videos. I have waited well over a month for some help.

I kind of get the impression this kit made engineered for the SRW’s and then adapted to the DRW’s. You just can’t lower the truck to level and keep the installation within the design parameters. Meaning, if the air bags are installed to the proper height the truck is about 2” over stock height.

The kit is well made and most everything fit well.

The instructions are just OK, you need to be able to figure some things out for yourself.

The kit is a difficult, time consuming install, and I would not recommend a do it your self. Get some help.

I saved all the old parts with the thought if I sold, traded or wrecked the truck I would remove it and install in the next vehicle.

I will never use one of these kits again, if you want air ride - look at Kelderman or Ultimate air and get a real air ride.

Before purchasing I tried working with S-R, firestone and the suppliers about leaving the supplied air system out. I had plans for a more robust compressor/storage. Even though the package is a “build to order” kit, there was no dealing with the change.

I have an air leak that I have narrowed down to the Height Control Valves, but is hard to verify.

The spring center pin not long enough to allow the parking brake cable to be secured.

The compressor comes on while driving, there should be little air change once the height is set, there is a delay with height change valve which is supposed to keep cycling to a minimum.

Compressor is a bit small for the task

The parking brake cable rubs the bag all the time, and there is no way to relocate due to the DEF tank.

The right side air bag is fairly close to the exhaust, and there was no supplied heat shield. Firestone did send out a heat shield for me to install.

The air bags wrap over the upper steel spacer and will most likely cause wear when collapsed

The right side brake cable has to be run through the brackets for the installation

I have had a hard time leveling the truck and have yet to get a straight answer from S-R on the proper procedure. Makes me wonder why there are two height valves. Most pickups really don’t need side to side leveling. OTR trucks use one valve for 2 axles/4 bags.

After a month’s use my side to side level has changed, with the right side dropping a bit.

If I level the truck I have the wrong bag height. If I hve the correct bag height the truck sits about 2” high.

Because of the design, the height control valves (HCV) are fairly close to the springs and are attached to the springs with links. All seemed well until I put 4 wheels and tires back on. The extra weight almost pulled the HCV off the bracket with a way too short-wrong angle link.

The rancho shocks are useless with the truck unloaded. See the video of the lack of dampening

http://www.youtube.com/watch?v=kIAzXeqffjo&feature=g-upl

This causes an annoying bounce and bad sis to side wobble when backing out of my driveway on an angle. Feels like you are on a boat and just got waked.

The suspension has now developed an annoying squeak.

On the positive side, when I drop 3000+ pounds of pin weight on the hitch, the truck drops and comes back up to height and you barely notice the change.

On the road with the trailer the ride is better then it was stock but nowhere near what I was led to believe I would get with an air ride.

There is more, but this is what I recall for now.

So – no recommendation here for a DRW 6.7 Ford.

Stick with air bags only (you still get an air ride since the bags should always have 3-5 psi)

If you are looking to level the truck and get a smooth ride – this is not the kit

Expensive, difficult to install.

Minimal tech support after the sale.

SoCalDesertRider

Arizona desert

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Posted: 06/23/12 11:08am Link  |  Print  |  Notify Moderator

Wow, that's a disappointment. Sorry you had to spend so much money to find out you don't like it.


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majorloser

Central Florida

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Posted: 06/26/12 04:48pm Link  |  Print  |  Notify Moderator

Sorry about your troubles.

Mine is still working fine. But I will agree about the compressor. I'm looking to upgrade so I can add another tank and a quick connect to use with an air chuck. It would be nice to be able to air up tires with the compressor since I'm carrying it around anyway.

christopherglenn

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Posted: 06/26/12 10:45pm Link  |  Print  |  Notify Moderator

I have 2 on my trucks, anyone with a GM have issues with the ubolts rubbing the airbags?


2007 Chevrolet 3500 CC/LB Duramax/Dually 4X4 Mine r4tech, Reese Signature Series 18k +slider, duratrac, Titan 62 gallon, diamond eye, Cheetah 64
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majorloser

Central Florida

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Posted: 06/27/12 01:10pm Link  |  Print  |  Notify Moderator

I don't have problems with the u-bolts on my Ram.

They didn't put anything in the directions with my set (the directions suck), but they did include the parts for a heat shield to protect the airbag from the exhaust. The exhaust on my truck runs right next to the bag where it loops over the rear axle on the passenger side.

christopherglenn

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Posted: 06/27/12 11:05pm Link  |  Print  |  Notify Moderator

I had to have the exhause moved on both trucks, My issue is the drivers airbag on both are scarred by the rear ubolt, the pass side on my dually is as well (the dually is the only one that tows at the moment). I have already had teh drivers bag fail with the trailer on it. I scaled the truck and trailer, I am under all axle, gvwr, and gcvwr fo the truck. I think the 3 7k trailer axles are a little overkill for the 12k scaled weight.

imjustdave

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Posted: 04/15/13 01:03pm Link  |  Print  |  Notify Moderator

Over the weekend I ran into a guy running a newer Ford DRW, I think he said it was a 11 model. Anyways 120K miles and he loves it... So I think I will do this on my 06 Dodge.. Anyone know of a place to get a deal on this setup?


David

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transamz9

Lawrenceburg Ky

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Posted: 04/15/13 01:20pm Link  |  Print  |  Notify Moderator

imjustdave wrote:

Over the weekend I ran into a guy running a newer Ford DRW, I think he said it was a 11 model. Anyways 120K miles and he loves it... So I think I will do this on my 06 Dodge.. Anyone know of a place to get a deal on this setup?
Is your truck a Quad cab short bed?


2005 RAM 2500 Cummins/2011 Sandpiper 345 RET/2008 Nitro Z9 Mecury 250 PRO XS

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