This was in MB literature somewhere, referencing 75mph. I was being a bit more precise (anal? facetious? trolling?) as it would make sense that the car would be setup for 120kph. This would be with stock tires of course.

-Rolf

On 07/29/2011 04:09 PM, Fmiser wrote:
Fmiser wrote:

I don't like the long-legged gearing on my 85.  The engine is
running too slow at low highway speeds. (Best I can remember.
The tach is still dead....)  The turbo isn't really working
much at 55-60 mph.
Rolf wrote:

Thats because the optimal cruising speed for a 85 300d with
2.88 gearing is 74.5mph.
What size tire?

And I'm mighty curious how you arrived at that particular speed
as the optimal.

But kinda my point.  And Mike was contemplating putting the tall
gears in to improve fuel efficiency.  And I was warning that it
might not really help.

--     Philip

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