In an effort to get as much rigidity as i can out of my 'vert, i'm considering installing polly rear subframe bushings. There are allot of options out there. What have people tried and how'd you like them? As of now, i'm thinking i'll get the least aggressive polly i can. While i don't need crazy isolation, i do want to enjoy being able to take an 8 hour roadtrip in this thing.
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1987 325i Convertible
2015 Fiesta SFE: 1.0L of 'Woah, is that torque under 2k?' -
I have the Revshift 80A (softest ones) in my vert. Went with their entire rear end kit, which includes the subframe bushings, the trailing arm bushings and a diff bushing.
Ride quality is great.
When I installed them I smothered them with copper anti-seize and there is absolutely no squeaking. You should do this no matter what poly bushings you get. -
IE was the first manufacture of urethane subframe mounts for the E30. At last count there were at least ten suppliers.
Attributes to consider:
-Steel center sleeve (I have seen many damaged aluminum center sleeves. not a good choice for material in that position).
-80a durometer urethane is designed for street performance use.Comment
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First replacement was with those Lencas 90a bushings that came off this forum circa 2011. God awful fitment, not stock height, rear end clunks. Lots of issues reported by others too.
iX, Revshift 95a Opposite end of the spectrum, everything went together well and lined up great. Rode really well and no clunk or any sort of downside.
Round 2 on the first car, Garagistic 80D subframe riser mounts and some other stuff.
Others may disagree, but I'd say to match the hardness of your diff mount to whatever you use on your subframe.Originally posted by priapismOriginally posted by shamesonComment
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I have the RevShift bushings:
80A 12mm riser subframe bushings
80A rear trailing arm bushings
80A differential bushing
Differential 12mm spacers and studs/nuts
Also:
Revshift 80A Motor and transmission mounts
I love how easy they went in. Great quality and the ride is great. No noise or clunks. Very solid but not to solid. Im on IE stage 3 springs so I feel like Im driving on 'tracks' now.
Differential studs and spacers (not yet mounted to subframe).
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