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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #376  
Old 12-11-2017, 08:36 PM
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kanar200 kanar200 is offline
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Not sure why there is "lol", but yes, some self-adjusting brakes required backing up the trailer. Apparently, the self-adjusting brakes in my trailer can adjust going forward and backing up.

Quote:
Originally Posted by Kostyan View Post
could you please elaborate. Are they self-adjusting by backing the trailer up? lol
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  #377  
Old 12-11-2017, 08:41 PM
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And one photo from the recent trip.

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  #378  
Old 12-12-2017, 07:01 AM
Kostyan Kostyan is offline
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Quote:
Originally Posted by kanar200 View Post
Not sure why there is "lol", but yes, some self-adjusting brakes required backing up the trailer. Apparently, the self-adjusting brakes in my trailer can adjust going forward and backing up.
Never heard of self-adjusting (esp. that way) trailer brakes, hence the LOL - your input is appreciated and hope you don't take it the wrong way. Not sure if there is a way to verify if my trailer has self adjusting brakes.

Thanks for posting useful info everyone. It appears that I have paired the Prodigy correctly and left it at default boost setting because it felt providing the right amount of braking force at the time. The main culprit is pulsating trailer brakes, which is really amplified and felt in the car - but at no point in time my rig and family felt we were not safe. The rig stops on a dime. The trailer is parked for the winter, and come spring I will play with setting to see if that helps with pulsating, or take trailer to a shop,
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  #379  
Old 12-12-2017, 07:10 AM
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Brakes needing adjustment are drum-shoe brakes and self-energizing. During normal ahead braking the shoe assembly shifts slightly to bite harder. During reverse braking the same shift will engage a ratchet pawl-wheel on sufficiently worn shoes to expand the adjuster one ratchet per backing braking.

Self-energizing makes modulation more difficult and causes the trailer surging.
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  #380  
Old 03-09-2018, 01:52 AM
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  #381  
Old 04-04-2018, 01:47 AM
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  #382  
Old 04-04-2018, 06:20 AM
road ruler road ruler is offline
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Looks nice!!!!
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  #383  
Old 04-04-2018, 06:49 AM
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Without seeing photos, I thought that you are towing with E60.
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  #384  
Old 04-04-2018, 09:53 AM
FredoinSF FredoinSF is offline
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That X5 is earning its keep.
What's the story with the E60?
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  #385  
Old 04-04-2018, 02:18 PM
35dx5 35dx5 is offline
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trailer brakes pulsate

Quote:
Originally Posted by Kostyan View Post
Never heard of self-adjusting (esp. that way) trailer brakes, hence the LOL - your input is appreciated and hope you don't take it the wrong way. Not sure if there is a way to verify if my trailer has self adjusting brakes.

Thanks for posting useful info everyone. It appears that I have paired the Prodigy correctly and left it at default boost setting because it felt providing the right amount of braking force at the time. The main culprit is pulsating trailer brakes, which is really amplified and felt in the car - but at no point in time my rig and family felt we were not safe. The rig stops on a dime. The trailer is parked for the winter, and come spring I will play with setting to see if that helps with pulsating, or take trailer to a shop,
hey, my guess in your pulsating brakes /
your inboard brake settings in your features on brake lighting. needs to be programmed properly, some settings on brake light control flash, if its set that way. They can be set to flash, pulse and or intensity of brake force, I believe.

Was it a factory harness, or dealer installed wire harness and hitch. I've read in the past that the bmw harness is worth every penny.

other than that maybe water in your tail light sockets / shorting the two stag brake lights.
maybe an abs sensor too close to its exciter ring after all else. but usually you would have a code.
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  #386  
Old 04-05-2018, 02:12 AM
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Quote:
Originally Posted by FredoinSF View Post
That X5 is earning its keep.
What's the story with the E60?

Bought it from Copart with accident damage. Just removed all the damaged parts and was taking it to have the frame rail inspected for damage.
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  #387  
Old 04-10-2018, 11:23 AM
asbjorjo asbjorjo is offline
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From our trip to Arizona this Christmas, taken at White Sands in New Mexico.



Except for a few spots with heavy crosswinds we could set the cruise at 72. Hadn't it been for the lack of view out rear and not so great mileage you'd never know the trailer was there. Have since added extended mirrors and a Hayes Sway Master.

Last edited by asbjorjo; 04-10-2018 at 04:26 PM. Reason: Image URL
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  #388  
Old 04-10-2018, 11:46 AM
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kanar200 kanar200 is offline
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Check the speed rating of your trailer tires. Many are rated to 65 mph.
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  #389  
Old 04-10-2018, 02:04 PM
Michael47 Michael47 is offline
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Quote:
Originally Posted by asbjorjo View Post
From our trip to Arizona this Christmas, taken at White Sands in New Mexico.

(IMAGE MISSING IN ACTION)

Except for a few spots with heavy crosswinds we could set the cruise at 72. Hadn't it been for the lack of view out rear and not so great mileage you'd never know the trailer was there. Have since added extended mirrors and a Hayes Sway Master.
(1) can't see the image because I don't have your google login name/password.

(2) vehicle handling is a function of tire pressures, both of the trailer and the tow vehicle. Given that BMWs have sporty handling, tire pressures are especially critical. If they aren't high enough, you get directional instability as well as lack of grip, meaning they will skid sideways easily, too. They also run hot, leading to possible blow-outs.

I have no idea what you were towing (see #1 above), but I can tell you that my X5 towing a 5,000 lb travel trailer tows straight as an arrow without any anti-sway mechanisms. I have also had private conversations with several people here who have expressed directional stability issues, and every one of them has been running with tire pressures too low, that once corrected, found their issue resolved. While the Hayes Sway Master may have eliminated your sway, you would be well advised to check tire pressures, as there are additional safety issues involved beyond sway with under inflated tires.
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  #390  
Old 04-10-2018, 04:31 PM
asbjorjo asbjorjo is offline
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Quote:
Originally Posted by Michael47 View Post
(1) can't see the image because I don't have your google login name/password.

(2) vehicle handling is a function of tire pressures, both of the trailer and the tow vehicle. Given that BMWs have sporty handling, tire pressures are especially critical. If they aren't high enough, you get directional instability as well as lack of grip, meaning they will skid sideways easily, too. They also run hot, leading to possible blow-outs.

I have no idea what you were towing (see #1 above), but I can tell you that my X5 towing a 5,000 lb travel trailer tows straight as an arrow without any anti-sway mechanisms. I have also had private conversations with several people here who have expressed directional stability issues, and every one of them has been running with tire pressures too low, that once corrected, found their issue resolved. While the Hayes Sway Master may have eliminated your sway, you would be well advised to check tire pressures, as there are additional safety issues involved beyond sway with under inflated tires.
My bad, been a while since posting photos to forums. Should be visible now.

I used to race road bikes, then moved on as race mechanic, so reasonably OCD about tire pressure. As I mentioned above it's perfect except for strong crosswinds, particularly with passing big rigs. Think driving through West Texas in northern winds.

If reducing speed a bit it's perfectly fine in wind as well, but will still notice when big rigs blast past. The Sway Master takes care of that so that's not noticeable anymore either.
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  #391  
Old 04-10-2018, 10:23 PM
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I am towing fairy often and fairly large trailer. I always tow with max pressure in the rear wheels (50 psi) and increased pressure in the front. Also, I feel the difference between low profile wheels (20 inches) and higher profile wheels (18 inches, which I am using during winter for ski trips).
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  #392  
Old 04-23-2018, 06:35 PM
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  #393  
Old 04-23-2018, 09:14 PM
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Did they just let you hitch up at Home Depot or you needed to sign the docs with your blood that you are responsible for your actions?
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  #394  
Old 04-23-2018, 09:28 PM
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They came out and hitched me up. Tested that my lights were all working before letting me drive off.
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  #395  
Old 04-28-2018, 02:22 PM
cjrussell cjrussell is offline
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I have a 2012 X5d too. Pull a 1952 Chris Craft Riviera 2x annually about 90 miles. Boat and trailer are 3300 lbs. fully loaded, with 300 lbs. tongue weight. Have no rear dip and handles great relative to pick up with 200 lower torque rating.

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  #396  
Old 05-04-2018, 03:34 AM
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2500 pounds empty trailer weight, plus whatever 3.5 yards of fertile loam soil weigh.







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Last edited by kakalika; 05-04-2018 at 03:38 AM.
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  #397  
Old 05-04-2018, 03:47 AM
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Quote:
Originally Posted by cjrussell View Post
I have a 2012 X5d too. Pull a 1952 Chris Craft Riviera 2x annually about 90 miles. Boat and trailer are 3300 lbs. fully loaded, with 300 lbs. tongue weight. Have no rear dip and handles great relative to pick up with 200 lower torque rating.

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Is your boat like this? Beauty!!!!!

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Last edited by kakalika; 05-04-2018 at 03:49 AM.
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  #398  
Old 05-04-2018, 06:23 PM
SoCaLE39 SoCaLE39 is offline
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Few weeks back. The other project I'm working on...
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  #399  
Old 05-06-2018, 08:26 PM
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Dog clearly not ready to go back home

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  #400  
Old 05-08-2018, 08:31 PM
FredoinSF FredoinSF is offline
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Not towing much these days but doing a lot of cycling. Just upgraded my trailer hitch mounted bike carrier to a carbon fiber frame friendly setup.

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FWIW, with no bikes on, the carrier allows the tailgate to open without tilting it out of the way. Nice surprise.


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