R500/R63 towing capabilities...?
However, I have 2 small children in car seats, and the interior is just not family friendly enough anymore.
The R class has really hit all of the points I want in my next car.
The problem is, that I need something that can tow our sports car as well. We do a lot of long distance family trips, and bring the sports car with us.
So, my question is... Can the R class be upgraded to tow a car?
I've found little to no information on towing with the r500 / r63.
But I have been told the engine and transmission are the same as the ML... And the limiting factor was the suspension.
Is this true?
Thank you,
Emilie

There is a good thread on this somewhere.

I'm not sure what the numbers are on the tongue weight and tow capacity. The thread might be on the other forum.

http://www.benzworld.org/forums/w251...ry-wiring.html
It's my understanding the engine and transmission are the same from the ml to the R?
Would the air suspension be able to handle a 5000lb load (obviously assuming the correct hitch is installed)?
And is the chassis capable of handling that kind of towing on occasion?
Or where I might be able to find they information?
Any information related to towing seems to be in short supply with these cars.
Thank you

The chassis should be able to handle it just fine.
Looking at some of the other heads, the OEM is only a class II, It would be worthwhile cutting off the receiver and welding a heavier one on there. I think you'll see in that thread someone actually did that.
The Curt is a class III, but it just bolts to the underside, and hangs down pretty low.
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So we welded up a beefier custom brace.
Seems as though something like that may be in order here.
I just wanted to make sure the major components of the car were capable of handling towing what I would need, before setting on finding one as my replacement vehicle come next spring.
Thank you very much.
The Best of Mercedes & AMG

You can use the existing steel bumper and add-in the frame tube supports, weld on the receiver of your choice, and put the additional lateral support like the Curt has.
The R-class is basically just a lower ride-height version of the GL with cosmetic differences.

The rear section of the R-class where the bumper connects looks very robust, but it's hard to tell for sure unless you do some FEA on it or rig it up with strain gages. I have a few clients that do this, I wonder if they could hook me up - so to speak.
Thank you!
Custom work is no problem. We own a performance shop, and have the tools, and/or local hook ups if it's out of our comfort realm.
I was concerned with the structure, that it maybe was not reinforced as much as the suv's, and that was partly to blame for the tow ratings (or lack of).
Thank you very much!

They also seem to be quite a bit more expensive than the r500.
I had honestly not looked into them very much though due to diesel prices always being quite high... Didn't really see much for a cost savings in the long run (initial car price + fuel costs). And I really am in love with the hp numbers the 63 has to offer.... As absurd as it is to cart 2 kids around on the daily.

I'm not sure how the Bluetechs are faring.

The 63's are nice, but they're all getting pretty old now. There are a lot of diesels out there.
My 04 ml500 has over 190,000 miles. She's been a good work horse! And you'd never know it by driving it. A lot of life still left.
As long as it's a solid car over all, (major components).
I will look more into the diesels, they are much easier to find.
Are there any modifications available for power upgrades?

You can also do a DPF delete to free up exhaust flow, but I haven't done that yet.
I agree the M113 engines are good tough engines - one of MB's best V8s. I had a CLK55 and loved it. I had an ML320 also (M112 engine) and it had 370,000kms on it when I sold it - still ran like a top.
Are you aware of any software or tools than can be used to retune the ecu ourselves?
We do tuning in a number of other cars at our shop (we have an awd dyno in house), so wouldn't be opposed to playing with the numbers ourselves (if something like that is readily available).
Now I wonder how well it would take to a turbo upgrade... Haha
Slippery slope... But this may be the best route to get my husband on board with it!

Check'em out:
http://www.greendieselengineering.com/Welcome.action



A quote if I ever saw one... The perfect description.