Re: <misc>Top Speed Discriminations

[John Firestone <john.firestone@xxxxxxxxxxxx>]

Ron Browne writes:
> 
> Anyone have any info on how BMW decides on what the Top Speed will be when
> programming their Top Speed Governors?  Years ago, I recall the ceiling
> being 155mph.  In 1992 318's and 325's had limiters of 128mph.  Subsequent
> years saw the 318 getting something like 116mph.  New 540's get 133 (or
> something like that), when its obvious it can do much much more..at least
> 155.  I think E36 M3's had 135mph..or was it 140?  Yes, I know these limits
> can be removed with an aftermarket chip, but why is BMW so inconsistent in
> their own top speeds?
> 

I believe a combination of user neglect and marketing are why U.S. 
318's ended up with a 116 mph top speed despite tires rated to 130
mph.  But I don't live on the North American continent and had better
let someone explain who is closer to the action.

- -John
'96 318is (with V-rated tires and a T-limited DME, but not for too long)
john.firestone@domain.elided

------------------------------