[Land-speed] Tires,Mileage,etc/non LSR ?

[Jon Wennerberg]

On Jul 21, 2008, at 3:01 PM, drmayf wrote:

Tom, Ed, all..


mayf



Speaking to something that Ed mentioned a few posts ago -- the fuel  
computer display built into the dashboard.  On my '04 GMC pickup  
there's one of the computers, and I've checked the accuracy -- only  
to find it's a bit generous (when compared to my figuring of fuel  
economy).  A couple of mpg too generous, in fact.  The 'puter might  
show 25.4 mpg on a road trip -- and when I figure the number of  
gallons burned and the number of miles driven (using the readouts  
from the fuel stations and the corrected mileage shown on the  
odometer ) I'll get something like 23.9 mpg.  These numbers are close  
to the real world for me -- I do get mid-20's in my big pickup -- but  
the computer shows even better.

I drive at or below posted speed limits 99% of the time, use the  
cruise control as much as is possible, and don't do jackrabbit starts  
-- all of which contribute to good mileage.  Again -- YMMV.

Jon Wennerberg