Towing with 33s?

Is it safe to run 33s 12.5s and tow a small travel trailer (3,000lbs)Will this damage truck over time?

 

Not really, but you'll have barely any power with that set up. You could re-gear your truck to gain back mpg and power.

 

Just don't put it in "drive" if you have an automatic. Hopefully you have a tow package as well. It's gonna drive like a cow with an attitude problem I'd bet.

 

^^^^
Especially with the new 16 transmission. Just use ECT and save $ for re-gearing both diffs.

 

What is the best gear ratio for gain mpg and lower?

 

Thanks is regearing opening a can of worms? How much for reagearing approx.?

 

That is about 8% larger diameter tire than factory, it will reduce the amount of power getting to the wheels by about the same amount. A lot depends on how much your truck is rated to tow. My Tacoma is rated for 6500 lbs. I went from the factory 31" tires to a 32" tire, about 3% larger. I can't tell any difference at all in performance or fuel mileage. If yours is rated for 6500 lbs towing less than 1/2 that even with the larger tires won't make any noticeable difference. Some Tacoma's are rated for much less weight depending on the engine, transmission and gear ratio. If your truck is only rated for 3500 lbs, then towing 3000 lbs with larger tires might make a difference. Most Tacomas come with 3.73 gears anyway. You shouldn't really have to worry about re-gearing until you get to 35" tires if you have 3.73's from the factory.

 

Stop. Your math is wrong. The size difference alone is not what matters, a load E tire that that's 12.5" wide is a lot heavier than the passenger crap that comes outta the factory on these trucks.

 

Size definitely matters...

 

LOL your all sorts of wrong. these trucks come with 3.90 gears. Nitro recommends 4.88 with 33s on these truck. Overland already has their truck regeared with the 4.88s said they gained back 1.5mpg with a lot better shift patterns. I'll be looking into doing this in the near future.

 

The math is right on the money, a 33" tire is 8% larger diameter than 30.5" tire that comes from the factory, plus most tires advertised as 33" are actually closer to 32.5. Towing a 3000 lb trailer with 33" tires will be no problem if his truck is rated to pull 6400 lbs with factory tires. If his is rated for only 3500 lbs then he has a problem.

Of course they recommend different gears, they want to sell them to you. Didn't realize the 3rd gens were coming with 3.90's. But if anything that tells me it will be even less of a problem.

 

I agree completely. Mine has3.90's I really think the truck could use 4.30 stock. If your planning on 33's I would definitely go with 4.88.

 

4.56 and 4.88 cost is the same. follow the expedition overland build. they have a video answering several questions regards to gearing for the 3rd gen.

 

its officially on Nitro's website now.

http://www.justdifferentials.com/GPTACO2016-4-88-p/gptaco2016-4.88.htm
http://www.justdifferentials.com/GPTACO2016-4-88-8-75-p/gptaco2016-4.88-8.75.htm

locker: http://www.justdifferentials.com/ARB-RD111-p/arbrd111.htm

this will be on my list of things to buy in the near future as ill be running 305/70/17s.

 

For what it's worth, I've got 32" Cooper STT Pros (54lbs each) and I've towed a couple trailers recently about 6,000 lbs and the truck did really well. Wouldn't win any drag races but had no problems at all. I wouldn't make a habit of it and I wouldn't want to do it in the mountains without trailer brakes but 33's with a 3,000 lb trailer should likely be fine. Do you have the tow package? If not you might want to look into a trans cooler.

I also know someone with a 3rd gen who recently towed a 12,000 lb trailer . Only about 30 miles but it did make it up a 20% grade dirt road...from what I hear. (Don't try this at home kids)

 

You're assuming the diameter change is the loss of power in larger tires. Protip: it's not.

 

dont forget trans temps. your transmission is working much harder trying to push 33s and stock gearing. now this is not apples to apples, but my 03 with stock gearing and 33s my trans temps would get in to the 220+ range just DDing, on long hills 260+ so not good. after regearing, always under 200 and 230ish on hills.

 

I'd disagree. You have less torque with a larger tire.

I don't think you can limit it to solely one factor for power loss.

 

I know this thread is old, but I just towed over 20hrs to get to my destination for the week and I need to advice. I’ve got a 2019 automatic v6 with a 3” lift and 33” Toyo at3s. With my current setup, my truck tows like garbage. I’m only towing a 4x8 trailer with maybe 600lbs. My tires weigh 55lbs each so I’m wondering if I go with tires that are still 285/70/17 size but weigh 42lbs, if it’ll make that much difference. I love my Toyos but I’ll be making this trip fairly often.

 

Yes, 13 lbs per tire woild make a large difference towing on the hiway. Big change in accel/braking and gear hunting.