[high.spool.teacher]

Hey guys, thanks for reading. I will be installing a complete rear subframe from a E93 M3 into my E92 within the next couple weeks. If money wasn’t a concern, I would be putting the aluminum subframe bushings into the M3 sub frame and skipping this post altogether; however, I find myself pretty much maxed out on my budget for this car for the spring and wanted your opinion. Should I shell out alittle bit extra for the Turner motor sport aluminum subframe bushings before I install the M3 rear end, or will the M3 rear end have significantly upgraded subframe bushings to the extent that I won’t need to upgrade them in order to enjoy a considerable benefit over the 335 bushings? The donor car has 93,000 miles and my car has 97,000.

For reference, I’ve done pretty much everything else on this car suspension wise over the winter including coilovers, M3 front control arms, front camber plates, and now this complete rear end. The car makes 500 HP and I just want to be able to use it around corners instead of just in straight lines. Predictable and confident cornering is my goal.

Thanks for your input.

[Wolf 335]

Is this for a track race car?

If not, what benefit will aluminum bushings provide for a daily driver?

[neilvan]

Originally Posted by Wolf 335

I this for a track race car?

If not, what benefit will aluminum bushings provide for a daily driver?

^^^ This exactly.

If its a daily or a mostly street driven car; or something that isnt a high HP build then you really wont notice much of a difference.

Especially because you have the M3 subframe already, Changing out the bushings what would be the point of getting the subframe in the first place?

[mweisdorfer]

Originally Posted by high.spool.teacher

Hey guys, thanks for reading. I will be installing a complete rear subframe from a E93 M3 into my E92 within the next couple weeks. If money wasn’t a concern, I would be putting the aluminum subframe bushings into the M3 sub frame and skipping this post altogether; however, I find myself pretty much maxed out on my budget for this car for the spring and wanted your opinion. Should I shell out alittle bit extra for the Turner motor sport aluminum subframe bushings before I install the M3 rear end, or will the M3 rear end have significantly upgraded subframe bushings to the extent that I won’t need to upgrade them in order to enjoy a considerable benefit over the 335 bushings? The donor car has 93,000 miles and my car has 97,000.

For reference, I’ve done pretty much everything else on this car suspension wise over the winter including coilovers, M3 front control arms, front camber plates, and now this complete rear end. The car makes 500 HP and I just want to be able to use it around corners instead of just in straight lines. Predictable and confident cornering is my goal.

Thanks for your input.

Originally Posted by high.spool.teacher

Hey guys, thanks for reading. I will be installing a complete rear subframe from a E93 M3 into my E92 within the next couple weeks. If money wasn't a concern, I would be putting the aluminum subframe bushings into the M3 sub frame and skipping this post altogether; however, I find myself pretty much maxed out on my budget for this car for the spring and wanted your opinion. Should I shell out alittle bit extra for the Turner motor sport aluminum subframe bushings before I install the M3 rear end, or will the M3 rear end have significantly upgraded subframe bushings to the extent that I won't need to upgrade them in order to enjoy a considerable benefit over the 335 bushings? The donor car has 93,000 miles and my car has 97,000.

For reference, I've done pretty much everything else on this car suspension wise over the winter including coilovers, M3 front control arms, front camber plates, and now this complete rear end. The car makes 500 HP and I just want to be able to use it around corners instead of just in straight lines. Predictable and confident cornering is my goal.

Thanks for your input.

M3 vs Aluminum would be like night & day

[high.spool.teacher]

Originally Posted by mweisdorfer

M3 vs Aluminum would be like night & day

So aluminum is far better? This car is for aggressive summer street driving. Occasional track trips perhaps.

[high.spool.teacher]

Originally Posted by neilvan

^^^ This exactly.

If its a daily or a mostly street driven car; or something that isnt a high HP build then you really wont notice much of a difference.

Especially because you have the M3 subframe already, Changing out the bushings what would be the point of getting the subframe in the first place?

Well the M3 subframe is the entire unit with the diff and axles and control arms, so either I just toss it in and hope for the best or upgrade the subframe bushings while I do the swap.

[high.spool.teacher]

Originally Posted by Wolf 335

I this for a track race car?

If not, what benefit will aluminum bushings provide for a daily driver?

I can’t stand body roll or unpredictable cornering. I want a very capable, aggressive and fast street car—properly sorted.

[335i54n]

with that many miles on the used subframe, i would at least put some poly subframe bushing. whiteline is pretty reasonable price

[neilvan]

Originally Posted by high.spool.teacher

Well the M3 subframe is the entire unit with the diff and axles and control arms, so either I just toss it in and hope for the best or upgrade the subframe bushings while I do the swap.

Are you using M3 rear shocks&springs? They are different and if you are using the non-M E90s stuff you will have to swap out a few arms anyways.

If its reasonably low mileage and its a street car id' throw the subframe in and use it as is.

Assuming you got the M3 rear hubs and brakes with it all too so it all bolts on?

[high.spool.teacher]

Originally Posted by neilvan

Are you using M3 rear shocks&springs? They are different and if you are using the non-M E90s stuff you will have to swap out a few arms anyways.

If its reasonably low mileage and its a street car id' throw the subframe in and use it as is.

Assuming you got the M3 rear hubs and brakes with it all too so it all bolts on?

My car and the donor car nearly have the same mileage (95,000). I will be swapping over the 335i hubs for use with the 335i brakes, as well as the 335i lower control arm spring perches for use with my 335i coilovers. I just happened to put brand new brake pads, rotors, and coilovers on last week, so I'm determined to make those parts work seeing as they are installed with 0 miles....except now I'm completely taking everything apart again to do the subframe lol

[Biginboca]

Originally Posted by high.spool.teacher

Hey guys, thanks for reading. I will be installing a complete rear subframe from a E93 M3 into my E92 within the next couple weeks. If money wasn’t a concern, I would be putting the aluminum subframe bushings into the M3 sub frame and skipping this post altogether; however, I find myself pretty much maxed out on my budget for this car for the spring and wanted your opinion. Should I shell out alittle bit extra for the Turner motor sport aluminum subframe bushings before I install the M3 rear end, or will the M3 rear end have significantly upgraded subframe bushings to the extent that I won’t need to upgrade them in order to enjoy a considerable benefit over the 335 bushings? The donor car has 93,000 miles and my car has 97,000.

For reference, I’ve done pretty much everything else on this car suspension wise over the winter including coilovers, M3 front control arms, front camber plates, and now this complete rear end. The car makes 500 HP and I just want to be able to use it around corners instead of just in straight lines. Predictable and confident cornering is my goal.

Thanks for your input.

Hey man, I been following you on IG. I just did the condor speed shop UHMW subframe inserts. They are harder than M3 but softer and easier to install than aluminum. I can’t recommend them enough if you check the last page of my build thread linked in my signature you can see the install details.

[Vivek.]

Originally Posted by Biginboca

Hey man, I been following you on IG. I just did the condor speed shop UHMW subframe inserts. They are harder than M3 but softer and easier to install than aluminum. I can’t recommend them enough if you check the last page of my build thread linked in my signature you can see the install details.

Man I was gonna recommend these just because I WOULD use them but I chose to hold off since I haven't actually done it.


I have plenty of Condor parts on my E30, hell I think I was one of their first customers back in the day. Highly recommend

[mad1stgen]

I've done countless installations of Condor Speed Shop subframe bushings.
UHMW is the proper material to use here, not poly or Delrin.
Very easy installation once proper tool is used to extract old bushings, can be done in and out of the car.
100% recommend over M3 or aluminum. Great price, great service.

[STooK]

Not sure if this will help you but I installed solid rear subframe bushings and poly diff bushings (powerflex purple) over the past summer on my e92 M3. The solid subframe bushings are easily one of my favorite mods I've done to my car so far. It made the rear feel so much more planted during acceleration and in turns while having literally 0 draw backs (no n/v/h). If you are going to be installing the entire subframe anyway it's definitely a no brainer to swap out the OE bushings with solid aluminum. If you don't do them now you will probably never do them and IMO they are totally worth it.

[mweisdorfer]

Originally Posted by high.spool.teacher

So aluminum is far better? This car is for aggressive summer street driving. Occasional track trips perhaps.

When you say aggressive summer street driving, are you talking about "fast & furious" or just driving the S curves & doing many WOT runs? Maybe doing do spirited driving on a curvy, mountain road.

Remember, the e90 M3 that was legendary at the famous nurburgring track used the M3 subframe & differential bushings NOT aluminum.

If the car was to be used 75% of the time for track use, I'd say Aluminum would absolutely be the way to go.

I'd also caution you to take an honest look at the roads around your house and region. What sort of shape are they in? Aluminum will ABSOLUTELY create a harsher ride on pot hole filled roads.

Look into 60a Poly bushings. That would a step up from M3 bushings.

I assume you are putting "summer" tires on the car?

[high.spool.teacher]

Originally Posted by Biginboca

Hey man, I been following you on IG. I just did the condor speed shop UHMW subframe inserts. They are harder than M3 but softer and easier to install than aluminum. I can’t recommend them enough if you check the last page of my build thread linked in my signature you can see the install details.

Hey, thanks for the reply and the shoutout for IG. I'm glad to finally be reaching some of the community on that platform. This is the first I've heard of them. When you say subframe inserts, do you mean the inserts meant to bolster the 3-series subframe bushings, or are you referring to the whole new bushing set?

[high.spool.teacher]

Originally Posted by STooK

Not sure if this will help you but I installed solid rear subframe bushings and poly diff bushings (powerflex purple) over the past summer on my e92 M3. The solid subframe bushings are easily one of my favorite mods I've done to my car so far. It made the rear feel so much more planted during acceleration and in turns while having literally 0 draw backs (no n/v/h). If you are going to be installing the entire subframe anyway it's definitely a no brainer to swap out the OE bushings with solid aluminum. If you don't do them now you will probably never do them and IMO they are totally worth it.

This definitely helps. Which brand bushings did you go with?

[high.spool.teacher]

Originally Posted by mweisdorfer

When you say aggressive summer street driving, are you talking about "fast & furious" or just driving the S curves & doing many WOT runs? Maybe doing do spirited driving on a curvy, mountain road.

Remember, the e90 M3 that was legendary at the famous nurburgring track used the M3 subframe & differential bushings NOT aluminum.

If the car was to be used 75% of the time for track use, I'd say Aluminum would absolutely be the way to go.

I'd also caution you to take an honest look at the roads around your house and region. What sort of shape are they in? Aluminum will ABSOLUTELY create a harsher ride on pot hole filled roads.

Look into 60a Poly bushings. That would a step up from M3 bushings.

I assume you are putting "summer" tires on the car?

I generally use the car for pleasure cruising, canyon runs and the occasional trip to Mexico. The most important part to me is I want the car to do on the road what I predict it will do in my head. That's the goal, and so I think the closer I can get to a track setup without increasing NVH significantly is the ultimate goal for me.

[high.spool.teacher]

Originally Posted by mad1stgen

I've done countless installations of Condor Speed Shop subframe bushings.
UHMW is the proper material to use here, not poly or Delrin.
Very easy installation once proper tool is used to extract old bushings, can be done in and out of the car.
100% recommend over M3 or aluminum. Great price, great service.

This is very compelling. I wasn't aware of this option. What is UHMW and how long do you figure it will hold up? I want to own this car for 5-10 more years at least, and only want to do this once. Is this just as strong as aluminum? Will there be any deflection at all? I like the price

[Biginboca]

Originally Posted by high.spool.teacher

Hey, thanks for the reply and the shoutout for IG. I'm glad to finally be reaching some of the community on that platform. This is the first I've heard of them. When you say subframe inserts, do you mean the inserts meant to bolster the 3-series subframe bushings, or are you referring to the whole new bushing set?

I have pics of them and the install with pointers outlined on what’s currently the last page of my build thread, it seems you did not look at it like I suggested?

Cause that would save me a lot of typing and answer all your questions faster than the time it takes for you to type your questions.

[STooK]

Originally Posted by high.spool.teacher

This definitely helps. Which brand bushings did you go with?

I went with bimmerworld because they were running a sale. But honestly, you can go with any brand as long as it's solid aluminum. If you are upgrading, I wouldn't go with anything less than solid aluminum. It really makes the rear planted and there's no noise so there's no reason to go softer.

[high.spool.teacher]

Originally Posted by Biginboca

I have pics of them and the install with pointers outlined on what’s currently the last page of my build thread, it seems you did not look at it like I suggested?

Cause that would save me a lot of typing and answer all your questions faster than the time it takes for you to type your questions.

I did look through it, and again just now, but I didn't see anything. Sorry!