pulling power of the rear cossmember?

[86tuning]

I've read that the tow capacity of the 80-series is 2500kg in north america, which specify a frame mounted receiver style hitch.

In the rest of the world, it's 3500kg. I've see decals on JDM trucks that say that. And all the pics of them in the rest of the world use a pintle bolted to the rear crossmember.

I suspect the different tow ratings are to prevent weight-transfer style hitches which I'd guess are more popular in north america?

 

[bugsnbikes]

from what i recall the tow rating computation was a combination of factors like frame, braking and engine and tranny capacities as well as things like normal speeds attainable in the countries they are sold. So if the combination of all those lead engineers to rate it for 2500-3500 id be willing to bet the frame itself is actually able to handle quite a bit more....whereas the braking on 80s was actually offsetting things lower.

The differences in the jdm or euro ratings are factoring diesel engine tow capacity and euro and japan road speeds given that frames and brakes are not different jdm to usa or euro

Also the rating was more of an overall safety suggested rating which is why it takes the overall balance of these items into account and why you hear of people massively exceeding ratings without a problem if they offset that by going slower, keeping further braking distances etc.

- go check out some dodge cummins tractor pulls. the actual frames and engines can massively exceed “tow ratings”.........but take that same weigght at 70mph downhill and the braking is the real reason why the tow rating gets so truncated compared to what a frame can handle.

adding things like trailer brakes etc would give you the ability to safely control a slightly higher load than recommended tow rating.

as to a pintle....just go check the sheer force ratings of the bolts or simply use grade8 or better which is going to exceed any tow ratings by 40-50k+lbs/sq.in.

and we all know the weak link keeping our 80tow ratings so low is the bloody brakes. i think the frame is the least of your worries if you follow recommended bolt gradings

 

[Gabriel 71]

Did anybody see the price of that pintle from Megazip thing wow!!

 

[BILT4ME]

It's lower in the USA because there are more lawyers.

 

[Malleus]

I asked @beno this question a couple of months ago. He didn't know and suggested I ask @cruiserdan if Toyota had ever published the rated strength of the rear crossmember. (I just got around to it )

Remember, the strength isn't just the material strength, but also the joint capacity. I'd planned on doing the calculation myself over the holidays, just to have something to fill up my time.

 

[inkpot]

It's lower in the USA because there are more lawyers.

Exactly!!

 

[cruiserdan]

I found this to be an interesting and informative read. Written by a mud member by the way.

http://oppositelock.kinja.com/tow-me-down-1609112611