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  #51  
Old 02-19-2018, 03:58 PM
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I have a 2012 35d with the Invisihitch/Execuhitch and no air springs. It tows my car & open steel trailer well. I've seen 18 mpg or better on the highway. My loaded trailer weights about 5200 to 5400 lbs with spare wheels and fuel.


Last edited by e70dc; 02-19-2018 at 04:17 PM.
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  #52  
Old 02-19-2018, 06:39 PM
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Installed a Curt hitch with BMW harness wired in and coded. We pull my wife's horse trailer. Trailer weighs in at ~ 1500 lbs and horse goes for ~ 1000 lbs plus 100 lbs misc horse stuff..

Usually get ~ 22 MPG with the 3.5i which drops to ~ 12-13 pulling the trailer mostly on the highway doing average 65 MPH. The trailer has surge brakes and handles very easy behind the X5.
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  #53  
Old 03-04-2018, 01:17 PM
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Quote:
Originally Posted by e70dc View Post
I have a 2012 35d with the Invisihitch/Execuhitch and no air springs. It tows my car & open steel trailer well. I've seen 18 mpg or better on the highway. My loaded trailer weights about 5200 to 5400 lbs with spare wheels and fuel.

I was getting 16-17mpg with an aluminum open trailer and car that weighed 5000lbs. Therefore i think highway mpg is dominated by aerodynamic drag. When I have 5000lbs of trailer I adjust the tongue weight to 600lbs (12%). This caused the rear of my ML350 to sag about 4 inches. That's why I bought an E70 with rear self leveling.

With an enclosed trailer (5000lbs total load), I only get 13mpg at 65mph with an X5d (2011 model). Not great but acceptable.
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  #54  
Old 03-04-2018, 04:04 PM
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+ 1 in drag. I got better gas mileage towing an F350 on a flat bed at about 9k lbs than I did towing my M3 in an 18x8 box trailer at 7k lbs, obviously this wasn't with an X5.


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  #55  
Old 03-05-2018, 02:40 PM
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Quote:
Originally Posted by kalaharix5 View Post
Installed a Curt hitch with BMW harness wired in and coded. We pull my wife's horse trailer. Trailer weighs in at ~ 1500 lbs and horse goes for ~ 1000 lbs plus 100 lbs misc horse stuff..

Usually get ~ 22 MPG with the 3.5i which drops to ~ 12-13 pulling the trailer mostly on the highway doing average 65 MPH. The trailer has surge brakes and handles very easy behind the X5.
Nice work. I like that hitch because it doesn't require cutting into the bumper. I may have to pick one up this summer when I'll be towing my E46 around.
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  #56  
Old 03-06-2018, 04:57 PM
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Nice work. I like that hitch because it doesn't require cutting into the bumper. I may have to pick one up this summer when I'll be towing my E46 around.
If you don't want to cut the bumper, why not get an Execuhitch?

http://execuhitch.com/tow-hitches/

Rather than the standard 2" receiver, there is one mounted vertically in front of the rear valence. So you insert a U- Shaped hitch ball mount. When not in use, you see nothing. OK, perhaps just a glimpse of the tab on the flap covering the electrical connection. No big cut out in the bumper, although you do need to make a tiny cut-out about the size of a quarter on the bottom edge of the rear valence to clear part of the electrical connector.

I have used one for several years on my X5 with great results. As a bonus, its rated to 7,700 lbs with the V8 X5 4.8i, slightly more than the factory hitch. The downside is cost; it's one of the more costly options. Also, you can buy a bike rack from them that goes directly into their round vertical mount. You can also buy an adapter which gives you a 2" receiver, so you can use some other bike rack. They will also sell you the factory harness if you want.
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  #57  
Old 03-07-2018, 01:38 AM
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That's a clever idea but doesn't the bumper valence already have a cutout for the bumper?


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  #58  
Old 03-07-2018, 02:29 AM
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Originally Posted by andrewwynn View Post
That's a clever idea but doesn't the bumper valence already have a cutout for the bumper?


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The wifes E53 does but I don't think my E70 has a cutout back there. Its to cold or I would go look
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  #59  
Old 03-07-2018, 03:41 AM
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I'm curious to know thanks in advance for checking when it's warmer
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  #60  
Old 03-07-2018, 04:32 AM
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Went out and looked and there isn't a hole for a hitch on the e70 at all.
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Aftermarket E53 Radio Install
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