I've had a LTW Flywheel in my E39 for about 10 years now. Chatter is def there on idle though not present when the clutch is depressed @ idle.

As for 'feel' it's tough to say. What you 'get' is up to redline much more quickly. Revs are matched way more easily since the throttle response is much- what.. snappier? I guess? Tough to find the words.

But the opposite is also true- revs with the LTW flywheel 'fall' away even more quickly than they climb. So what you get is the need to be a bit more on point with your shifts so that the engine revs are closer to the transmission rotation. The stock flywheels mass keeps it moving much more closely in the use of a clutch, so it's easier to drive.

And that gets you back to why you'd want one in the 1st place. In every day driving- the kind I do in my E53- I don't think I'd want a LTW flywheel. I'm not even sure I should have done one in my sedan. It's a sedan after all.

But if you're trailbraking, double clutching, and using every second to get as much out of your drive as possible, the trade offs might be worth it. Like most of us, I'm still willing to pay the price for the benefit of a mod beyond what a lot of folks would. It's the essential non-sensical part of what makes us enthusiasts.

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