Leveling the rear with lots of hitch weight

[1911garand]

I am running Timbrens, new factory rear coils, and 1" rear coil spacers. It is working well - towed my camper yesterday.

I'd still recommend the Dobinsons factory height, or 1.75" springs......if they were ever available to order.

Jayco 264BH is the camper I am towing:

 

[vtl]

I am running Timbrens, new factory rear coils, and 1" rear coil spacers. It is working well - towed my camper yesterday.

I'd still recommend the Dobinsons factory height, or 1.75" springs......if they were ever available to order.

Jayco 264BH is the camper: i am towing:

View attachment 3308928

That's good to know, thanks! May I ask you to measure your fender height unloaded? My TRD PRO is around 37 1/2" (1/2" squat on the picture).

 

[1911garand]

Well, you got me beat.

I'm at 37.25" rear height from ground to fender.

2012 Sequoia Limited
Factory tire size - 275/55R20, 30 PSI
I am running Timbrens, new factory Toyota rear coils, and 1" rear coil spacers.

I have some load of tools, parts, hitches in the back, see pics below.

 

[vtl]

Well, you got me beat.

I'm at 37.25" rear height from ground to fender.

2012 Sequoia Limited
Factory tire size - 275/55R20, 30 PSI
I am running Timbrens, new factory Toyota rear coils, and 1" rear coil spacers.

I have some load of tools, parts, hitches in the back, see pics below.

View attachment 3308962View attachment 3308963

Hmm... I guess, gen2 TRD PRO comes with a 1" lift? What coil spacers do you use?

This is wife's SUV, she carries about same weight in baby diapers, etc

 

[1911garand]

I used these:

Amazon product ASIN B08KHC6796

 

[LINUS]

Have you checked if Icon makes anything that would fit your need?

I’m running their coilovers on the FR of the Tundra, will do RR shocks when I get to it.

No clue if they do springs in-house, or who supplies their coilover ones.

Not cheap, but worth it IMO.

 

[1911garand]

Have you checked if Icon makes anything that would fit your need?

I’m running their coilovers on the FR of the Tundra, will do RR shocks when I get to it.

No clue if they do springs in-house, or who supplies their coilover ones.

Not cheap, but worth it IMO.

Unfortunately, no other manufacturers currently offer rear springs for the IRS Sequoia. Dobinsons and factory Toyota are the only two I know exist.

Please do tell if you can confirm another manufacturer!

 

[vtl]

I installed Timbren's just this morning. My family + in-laws will travel around 2k miles to the Great Lakes and back over Memorial weekend, with Yakima EXO setup in back (1 box this time). Waiting for their feedback on ride firmness. If Sequoia manages to squat enough and ride on Timbrens, of course.

I'm jumping into my Tundra and heading north, to the Maine woods "And into the forest I go, to lose my mind and find my soul".

Also had a Trans-Taiga flashback recently. Did 4 trips there annually in my old Volvo wagon, until COVID hit. Dying to refresh these memories!

 

[vtl]

It turned out well enough with just the Timbrens. Camber was slightly negative, will probably add a 1/8" spacers for the next trip to level it better. The tree rode on Timbrens all the time. It was controllable at high speeds, not bumpy at all, kids didn't complain. Aired front tires up to 38 PSI and rears to 40. On the road the pressure was 40/44. Lots of load on the rear axle...

Roof basket was a bad idea. It works well on a lower vehicle, like my slightly lifted Volvo wagon, but on Sequoia it is impossible to find anything in the basket. I had a door step that hooks to the door lock bracket that could have helped, but Toyota's sheet metal is so thin that I was afraid to tear or damage it. Feels like 1/2 thickness of sheet metal in old Volvo (before Ford). Luckily the weather was crap, so we haven't camped a lot and escaped to hotels

ARB awning room was a bad idea, too. It basically immobilized us once the room was attached to awning. Also took a whole day today to dry it up properly. Our "plan B" - the old Marmoth ground tent - was the primary residence for wife and 2 out of 3 kids. She rejected sleeping in the back of the Sequoia because of heat wave and clouds of mosquitos at our camp ground.

Next time for such a long summer trip (2 weeks) into bug infested lands we'll probably just rent and tow a camper. I personally prefer to camp in cold seasons when these suckers die.

2 Nintendo Switches for older ones and Peppa Pig for their sister was the wisest idea we've ever had

Good trip. Newfoundland is beautiful.

 

[1911garand]

Great feedback on your set-up - thanks.

A simple pop-up camper with awning is where most of us start after tenting - very fun!

I have 4 kids:
started with a 10x14 canvas tent,
then pop up,
then smaller travel trailer,
then the Jayco 264BH and loving it with all the gear and kids. Fun progression and hobby!

 

[vtl]

Great feedback on your set-up - thanks.

A simple pop-up camper with awning is where most of us start after tenting - very fun!

I have 4 kids:
started with a 10x14 canvas tent,
then pop up,
then smaller travel trailer,
then the Jayco 264BH and loving it with all the gear and kids. Fun progression and hobby!

The downside is that you can't spontaneously check that TRD PRO suspension anymore with a full size trailer behind the hitch I can see an M1079 in the future

 

[1911garand]

You mean this M1079? Yes please!

 

[MOTOV8R]

I am running Timbrens, new factory rear coils, and 1" rear coil spacers. It is working well - towed my camper yesterday.

I'd still recommend the Dobinsons factory height, or 1.75" springs......if they were ever available to order.

Jayco 264BH is the camper I am towing:

View attachment 3308928

View attachment 3308929

I run pretty much the same setup. Same ebay 1” spacers and timbrens. I added bilsteins a few years back. I bought my 2013 new and added the timbrens about 6 months later. My rear fender is 37.5”. It has worked well. We tow a similar spec camper too.

 

[joseywales]

How are your Timbrens when empty or loaded lighter? In my Tundra they are HORRIBLE. With anything other than completely empty or fully loaded, they come in contact sporadically causing a horrible jouncing ride. My smaller travel trailer is in this unfortunate range, so that sucks. If I keep the Tundra much longer, I’m going to ditch the Timbrens and go to a proper air bag.

 

[joseywales]

$132 currently.

Firestone 4164 Coil-Rite Rear Helper Air Springs - Exit Offroad

Firestone 4164 Ride-Rite Coil-Rite helper air springs, suitable for Toyota Landcruiser 200 Series, Sequoia, and Lexus LX570, great for towing

exitoffroad.com

Mike, have you gotten any feedback from purchasers of this kit? Reading online reviews show a bunch of people saying the connections are brittle and leak prone. Airlifts kit is rated better, but still has complaints about it. I’m going to want a pair of bags for my 03 Sequoia as it will get the nod for our Montana, Colorado Wyoming trip next month. If the ‘19 Tundra Platinum was even close to as comfortable as the ‘03 SR5, we’d take it. Laughable that it isn’t!

 

[1911garand]

How are your Timbrens when empty or loaded lighter? In my Tundra they are HORRIBLE. With anything other than completely empty or fully loaded, they come in contact sporadically causing a horrible jouncing ride. My smaller travel trailer is in this unfortunate range, so that sucks. If I keep the Tundra much longer, I’m going to ditch the Timbrens and go to a proper air bag.

Good question. I do not notice the Timbrens until loaded. The sequoia IRS with the 1" rear lift leaves enough travel for normal driving and loads. On my setup, the Timbrens are invisible.

 

[WildernessRimFab]

Mike, have you gotten any feedback from purchasers of this kit?

I installed this kit on my 23 Tundra. Installation of any air lines can be tricky, I have installed airbags on three trucks now and this Firestone 4164 kit doesn't leak at all.
I had them pumped up to 20 psi for carrying a 300 lb dirt bike on a rear hitch rack and they didnt lose any pressure at all for a month.
Another tip is to plumb the airbags to individual valves (dont use a tee). Using a tee to inflate both bags can leak to excessive body roll.
Some discussion is here, but the consensus is to not install a tee.
Air Bags: To "T" or not to "T"....that is the question - https://www.tundras.com/threads/air-bags-to-t-or-not-to-t-that-is-the-question.107073/

The key to no leaks is to use a tubing cutter and make sure that the tubing is fully bottomed out in the fittings.
My guess is that most airbag leaks are due to improper installation.

 

[joseywales]

Well, I’ve installed about 20 sets of bags, never with a Tee, and other than one bag that the mount got loose on and it rubbed on a leaf pack until it holed, I’ve never had one leak. I’m only going by reviews on the different style valve and line-bag junction on these inside the coil style bags.

 

[vtl]

Good question. I do not notice the Timbrens until loaded. The sequoia IRS with the 1" rear lift leaves enough travel for normal driving and loads. On my setup, the Timbrens are invisible.

Same. I haven't driven Sequoia long enough w/o Timbrens, so I don't actually feel the difference when they engage. They are smooth.

 

[joseywales]

Hmm. I wonder if the Tundra ones are a stiffer rubber than the Sequoia? Might be a different compound for the pickup.