WTB: 4.10 DIFF for e46 M3

[bmw m3 s50]

Hey guys,

Wanted to see if anyone had a 4.10 Diff with LSD for the e46 m3 that they wanted to sell. Maybe someone here is thinking of returning back to stock gearing. I have a stock diff if you need it that can be used as a trade with some cash on my end. Please be sure that the Diff in good condition without any issues or whine. If your interested please email me at bmwm3s50@aol.com and let me know. Thanks for your time.

[slavik1988]

Whine will be inevitable with this diff. I have a 3.91 Dinan diff and it whines. Make sure you are okay with this before you commit.

[bmw m3 s50]

I have had both 3.91 and 4.10 diffs in my m3. So this is not my first diff upgrade. None of them whined. Not sure what you mean by your whines.

[siamkazi]

I have had both 3.91 and 4.10 diffs in my m3. So this is not my first diff upgrade. None of them whined. Not sure what you mean by your whines.

I'm also planning this upgrade, how did the 3.9/4.1 work for daily driving? Any experiences or advice for those thinking of this?

[Tbonem3]

Just realized this is a WTB thread nvm

[bmw m3 s50]

I'm also planning this upgrade, how did the 3.9/4.1 work for daily driving? Any experiences or advice for those thinking of this?

This varies from person to person, some people prefer the standard gearing to stay in gear longer. Others prefer the 3.91/4.10 gears.

I personally believe that the m3 should had come with 3.91 or 4.10 gears from the factory. 3.91/4.10 transforms the car. The always feels like it has power in every gear, pulls harder, and is great for the type of driving you do in this country. Yes, your top speed is reduced and you shifting sooner but harder pulls and the feeling of power in all gears is well worth it.

[bmw m3 s50]

Just realized this is a WTB thread nvm

Your looking to get back into a 4.10 diff?

[Tbonem3]

No, I thought it was a thread about 4.10 gears

[GhostGrayM3]

This varies from person to person, some people prefer the standard gearing to stay in gear longer. Others prefer the 3.91/4.10 gears.

I personally believe that the m3 should had come with 3.91 or 4.10 gears from the factory. 3.91/4.10 transforms the car. The always feels like it has power in every gear, pulls harder, and is great for the type of driving you do in this country. Yes, your top speed is reduced and you shifting sooner but harder pulls and the feeling of power in all gears is well worth it.

I just got mine installed and I agree with the above description!

[BMWE46M3]

Does anyone have a good source for gears? It appears that they sell roughly for $950.

[Hallerhan]

Does anyone have a good source for gears? It appears that they sell roughly for $950.

and to piggy back off of this.. can anyone recommend a shop in the mid atlantic/tri-state area that will swap the gears

[gorilla69]

This varies from person to person, some people prefer the standard gearing to stay in gear longer. Others prefer the 3.91/4.10 gears.

I personally believe that the m3 should had come with 3.91 or 4.10 gears from the factory. 3.91/4.10 transforms the car. The always feels like it has power in every gear, pulls harder, and is great for the type of driving you do in this country. Yes, your top speed is reduced and you shifting sooner but harder pulls and the feeling of power in all gears is well worth it.

Which of the gears made it accelerate faster i.e. from 60-130 mph? What kind of difference did you see on the road?

[Onefastsicilian]

To avoid the diff whine, dont run poly or solid bushings...

I have 4.10s and absolutely love them.

[bmw m3 s50]

Still looking for a 4.10 diff

[cudzich09]

https://diffsonline.com/new-motorsport-210mm-4.10-ratio-ring-and-pinion-with-14mm-bolt-holes.html#.Xx8YUJ5Kj-g