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In Reply to: Re: 96 or higher 740iL in 5/6 Speed? posted by JGT on August 03, 2001 at 15:10:11:
I'm not comparing a car with stop-and-go history. My point is that a US spec car with highway miles have been driven regularly at speeds of 60-80 mph. A german car with highway miles have been driven regularly at speeds of twice that. Twice the speed equals more than twice the wear. The engine is one thing, and although the rpm's aren't particularly high at those speeds, the load to overcome the exponentially higher air resistance is significantly higher, affecting both engine and transmission. Moreover, there is much higher wear on items like wheel bearings, brakes, shocks, bushings, strut mounts, etc. etc. Granted, many of these items are replaceable wear items, but the fact remains that out of two cars with similar driving habits, the one driven regularly twice as fast will show more wear. I'm not saying the car can't take it, just that it'll wear more than the other one.
What do you think?
Big-T
Dear Big T,
I like your comments a lot but this time I have to disagree. A motor wears much more in stop and go traffic, accelarations and short distances than 200km on the Autobahn at high speeds. Moreover don't forget that the 740i runs only at 4000RPM when going at 200km/h. I live in Europe and my father used to be working at the official test track of a big car brand. There they often drove those kind of cars 18h/day at high speeds for 100.000km without even changing the oil once! When a motor is at full operating temperature (oil above 90ºC)the wear and tear is very low if not accelarating full gas all the time. I'd rather buy a car with has done 40.000km a year then one who does 15.000km a year because the last one probably has been doing short tracks in the city everyday.....
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