Can anyone tell me what is the engine speed for:

1) a 1998/1999 E320 travelling at 60mph /
100kph.

2) a 1998/1999 C280 travelling at 60mph /
100kph.

3) a 1998/1999 E430 travelling at 60 mph /
100kph.

4) a 1992-1999 400SE/S420 travelling at
60mph / 100 kph.

Thanks!

johf,
For #4 the answer will differ depending on year. Also, what gear are we talking here? Most of those cars can hit 60mph in a couple of gears. I'll have to dig through some old literature and magazines to get you the answers but in the meantime you could just go to a dealership and drive the cars. Driving all 4 will be far more fun, I promise. Just our of curiousity, why the interest to know for those cars at those speeds?

I'll get back to you when I dig up the appropriate literature...Lee

Dear Lee:

Thank for your reply!

It is the engine speed at crusing speed (at 4th or 5th gear) that I am asking.

The S420 question is regarding the one that equipped with the 4 speed auto and 5 speed auto.

Further to your question, I am just trying to assess, intuitively, how noisy they are at such speed. I know that my Intrepid (3.3L V6) cruises at around 1900 - 2000 rpm at speed 60mph (100kph). The transmission is fairly long geared. The engine is whisper quiet at 60mph. The only irritating thing is the road and wind noise and the poor noise insulation around the door and window areas of the Intrepid (expected from a sub $20k car).

Once agian, thank you for your answers!

Hi johf,

Mine runs at just a little past 2000 rpm(if you set the car speed at exact 100km/h)I will say about 2100 - 2200 rpm.

Happy Motoring.....
Andy Kuo
'92 400SE

In the cars mentioned that will be more a function of intake baffling, exhaust tuning, and overall sound insulation levels. All of the cars mentioned will be fairly isolated but this is really something you need to experience first hand to get an accurate feel for.

Example: Despite having similar drivetrains my 400E (even at the same RPM's) was much quieter and more strangled of an engine note compared to the 500E. Granted there is gearing differences but even if you compared both cars at identical RPM's the 500E's engine let you ear (as well as your backside) know its presence more then the 400E's.

This is something that really can only be gauged by the individual firsthand. Just take a run down to your local dealership and go for a couple test drives. You will learn what you wanted to know and have a great time to boot. Just notice what kind of tires each car is shod with. That will make a difference on cabin noise levels. In a nutshell...Michelin=good, conti or goodyear=bad.

Hope this helps...Lee

Lee,

Speaking of tire, my rear Mechilin Energy Saving Tires are totally gone(0% tread), and front with 10% left. What's your recommandation?? Should I stick with those tires??

Happy Motoring...
Andy Kuo
'92 400SE

Akry,
For a W140 you can't do better than the Michelin MXV4 in any of its incarnations. I believe the latest is the "Energy MXV4 Plus". Stick with them unless you plan on making some trade-offs for extra handling. The W140 is somewhat of a "beefy" thing, it takes a ton of rubber to get the handling out of them. You are probably better off sticking with a fresh set of Michelin touring tires. Depends what your priorities are though. In a nutshell, go with OEM sized MXV4's.

Hope this helps...Lee

PS Careful in the rain and whatnot until you get the new shoes...


[This message has been edited by Lee Scheeler (edited 10-17-1999).]