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What causes rear end sag?

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Old 03-15-2012, 10:23 PM
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What causes rear end sag?

Driving around town I constantly see other 4runners With almost no rear end sag, it frusterates me because of how saggy mine is, what causes this rear end sag? Old warn out struts??? Warn out coils?? Other than coil spacers is there any other fix for this Problem?
Old 03-15-2012, 10:28 PM
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i think its just the coil springs wearing down over time, id just replace the coils instead of spacers
Old 03-15-2012, 10:40 PM
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Fat chicks
Old 03-15-2012, 10:42 PM
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Originally Posted by dropzone
Fat chicks
True story
Old 03-15-2012, 10:44 PM
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Originally Posted by dropzone
Fat chicks
I was going to say donuts but I guess you can't have one without the other.
Old 03-15-2012, 11:26 PM
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Seriously though, just 22 year old coils being compressed over time?
Old 03-16-2012, 02:03 AM
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In all honesty it is just coils compressing. 4Runners like many other SUV's have a lot more weight on the back than a regular pickup so they tend to sag much faster over time.
Old 03-16-2012, 03:18 AM
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Fat americans in trucks set up for skinny Japenese= coil fatigue
Old 03-16-2012, 03:40 AM
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Rear Springs is something that Toyota has never gotten right.
All Five of my trucks have had rear springs issues.
The rear springs in my Camry suck as did the springs in my '89 Tercel...
Old 03-16-2012, 02:56 PM
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This is good picture showing why alot of older vehicles have rear sag.



Name:  fatchick.jpg
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Old 03-16-2012, 02:59 PM
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Well... think about it. New from the factory, these springs sat completely level. If any higher, it would look "raked" springs settle, so therefore, the factory springs, settled and ended up lower than they thought. My 4Runner never had sagging problems, but when i added a 200 lb bumper, & stereo. I added a coil spacer, and now it sits half an inch higher in the rear, even with that weight.
Old 03-16-2012, 03:37 PM
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pretty sure it is a phenomenon called creep, if you want to get all technical.

http://en.wikipedia.org/wiki/Creep_%28deformation%29
Old 03-16-2012, 03:59 PM
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Originally Posted by dropzone
Fat chicks
Originally Posted by TICK2791
Fat americans in trucks set up for skinny Japenese= coil fatigue
Originally Posted by 94toy22re
This is good picture showing why alot of older vehicles have rear sag.
Haha, welcome to America!!

Yeah, coil fatigue. Those coils are old, and that is a lot of compressing over time! Everything wears out.

Last edited by 801YotaRunner; 03-16-2012 at 04:01 PM.
Old 03-16-2012, 04:46 PM
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how is that bike not running a constant wheelie????
Old 03-16-2012, 05:43 PM
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I wonder what kind of weight limit those tires have on them.

The last thing I would ever wanna do on a bike is put a big lady on the back and hit the highway going 70+ mph in a t-shirt and no helmet
Old 03-16-2012, 08:28 PM
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I think most sports bike have 350-380 weight limit, and that pool little cbr is pushing 450+.
Old 03-16-2012, 08:46 PM
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Originally Posted by MaK92-4RnR
Well... think about it. New from the factory, these springs sat completely level. If any higher, it would look "raked" springs settle, so therefore, the factory springs, settled and ended up lower than they thought. My 4Runner never had sagging problems, but when i added a 200 lb bumper, & stereo. I added a coil spacer, and now it sits half an inch higher in the rear, even with that weight.
Yes that and if you think about a new vehicle, take 100 typical test drives and think of what the results are if you have a nice "car-like" ride vs. a much firmer "truck-like" ride. I think 99 out of 100 would prefer the softer ride. And how many of those folks preferring the comfy ride are thinking what those soft springs will be like in 10 years.
Old 11-16-2013, 03:03 AM
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Originally Posted by 94toy22re
This is good picture showing why alot of older vehicles have rear sag.



3 things wrong with this photo:
not wearing a helmet.
driving with one hand.
that bug deflector should bin in the front.
Old 11-16-2013, 05:52 AM
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Originally Posted by JohnnyCanuck
3 things wrong with this photo:
not wearing a helmet.
driving with one hand.
that bug deflector should bin in the front.
Fella haulin her around dont need a helmet, hes got nothin to live for.
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