I regret putting polyurthane subframe bushings. The rear feels planted with polyurethane everywhere front & back, but the hardness sends sounds and shocks excessively into the frame. The diff has a whine at 90mph+, now at 180,000 miles, and that whine is now prominent because the sound is going through the frame. All polyurethane is cool in Germany, but in USA, Eastern Europe I would put back rubber subframe bushings to maintain the solid feel/comfort that M5 E39 has.
Thank you for sharing, if this is true I may end up going back as well... I am installing some sound deadening material on the chassis to hopefully make it overall quieter inside, maybe this will help.
@@TheBimmerBarn onre more thing: once I put in the poly subframe bushings, I took the car out of the shop for a spin and drove it straight back, I had strong "clunk" noise when shifting. Turns out the rear axles and drive shaft bearings were getting super slight play in them, while still functional that slight play once shifting gears sent metal 'clunk' sounds through the chassis with no rubber to absorb, that made it feel like I am driving old loose tractor. I ended up replacing rear axles and drive shaft cv joints and now it's tolerable with poly rear. These clunks were not prominent with all rubber rear frame.
Yes! Just finished a 1600 mile road trip on the car, combined with daily driving the past couple months, and I can say that these are very comfy, but solid! Rear end is predictable, doesnt bring in a ton of NVH or anything. It slightly amplifies the clunk from having old original axles, but that noise was there before, a sign that they need to be replaced. 10/10 would install again.
It's too bad you can not rent the tool from jed anymore. I built a tool with 3 pieces of angle iron and a 1/2" threaded rod. Super simple and effective. I posted pictures of my tool in the "rent the e39 subframe tool. " same jedi m5 thread that you rented yours from .
M5 rear sway bar fits too fwiw. Also, if you go m5 rear brakes, stop tec rear stainless lines fit fine with the touring suspention (missing the strait barb thats comes off the caliper)
I'm not sure! If you're having a lot of trouble, bring the control arm to a local mechanic shop who has a hydraulic press, and they can pop em out for you. Good luck :)
I bought a 525i touring for dirt cheap might have a blown head I would like to attempt to fix it myself but I have no experience, do you think it’s worth trying myself or I shouldn’t even attempt the repair
@@RedSport555 You'll need a good tool set, the timing tools for the camshafts, and a lot of patience. Might be better to have a shop do it, or swap in a new (used) motor!
Check out my video where we installed carpets in the M5 wagon, I did sound deadening at the same time! Now just need to add some to the trunk and spare tire well for the full effect. It does make a difference!
Great work man!
Thanks Jordan!
Did you notice and downsides like more road noise or like the yellow ones making bumps in road more banging in the car over standard bmw bushes
You got like just because Jed is awesome.
I regret putting polyurthane subframe bushings. The rear feels planted with polyurethane everywhere front & back, but the hardness sends sounds and shocks excessively into the frame. The diff has a whine at 90mph+, now at 180,000 miles, and that whine is now prominent because the sound is going through the frame. All polyurethane is cool in Germany, but in USA, Eastern Europe I would put back rubber subframe bushings to maintain the solid feel/comfort that M5 E39 has.
Thank you for sharing, if this is true I may end up going back as well... I am installing some sound deadening material on the chassis to hopefully make it overall quieter inside, maybe this will help.
@@TheBimmerBarn onre more thing: once I put in the poly subframe bushings, I took the car out of the shop for a spin and drove it straight back, I had strong "clunk" noise when shifting. Turns out the rear axles and drive shaft bearings were getting super slight play in them, while still functional that slight play once shifting gears sent metal 'clunk' sounds through the chassis with no rubber to absorb, that made it feel like I am driving old loose tractor. I ended up replacing rear axles and drive shaft cv joints and now it's tolerable with poly rear. These clunks were not prominent with all rubber rear frame.
@@BMWM5E39 Good info, I will order OEM rubber bushings, BMW designed a great car with the E39, I would like to keep it that way.
@@BMWM5E39 after reading this would you consider going with OEM bushings with powerflex inserts? Or just stick with OEM bushing alone?
@@TheBimmerBarn oem/lemførder bushings are oil filled, thats why every other solution doesent work
any update on if you like or dislike the polyurethane bushings?
Yes! Just finished a 1600 mile road trip on the car, combined with daily driving the past couple months, and I can say that these are very comfy, but solid! Rear end is predictable, doesnt bring in a ton of NVH or anything. It slightly amplifies the clunk from having old original axles, but that noise was there before, a sign that they need to be replaced. 10/10 would install again.
YASSSSS
How long would a job like this take? And is the process for the subframe removal difficult?
It's too bad you can not rent the tool from jed anymore. I built a tool with 3 pieces of angle iron and a 1/2" threaded rod. Super simple and effective. I posted pictures of my tool in the "rent the e39 subframe tool. " same jedi m5 thread that you rented yours from .
Wow, thanks for the update! Maybe I'll have to look into building one of my own
M5 rear sway bar fits too fwiw. Also, if you go m5 rear brakes, stop tec rear stainless lines fit fine with the touring suspention (missing the strait barb thats comes off the caliper)
Is it possible if any of those bushings/ball joint bushings could be cold welded? cant seem to get my rear ball joints out
I'm not sure! If you're having a lot of trouble, bring the control arm to a local mechanic shop who has a hydraulic press, and they can pop em out for you. Good luck :)
did you go to school/program to learn all of this ?
Nope, self taught with years of being surrounded by BMW's and cars. But always learning something new!
I bought a 525i touring for dirt cheap might have a blown head I would like to attempt to fix it myself but I have no experience, do you think it’s worth trying myself or I shouldn’t even attempt the repair
@@RedSport555 You'll need a good tool set, the timing tools for the camshafts, and a lot of patience. Might be better to have a shop do it, or swap in a new (used) motor!
Where can i find the bushing for a sedan .
Just go to Powerflex's website and enter your car, it'll give you all the bushings available: powerflexusa.com
Would like to see videos noise deafening
Check out my video where we installed carpets in the M5 wagon, I did sound deadening at the same time! Now just need to add some to the trunk and spare tire well for the full effect. It does make a difference!