That is exactly what I was thinking Philip. Mimi, what you could do is find a stretch of IH35 where you can drive 60mph for several uninterrupted miles. Using the interstate mile markers on the side of the road accurately time how long it takes you to drive several miles at your presumed 60mph. This should let you know how much your speed-o-meter (and od-o-meter) are off.
Jon Cradit -----Original Message----- From: philipm...@juno.com [mailto:philipm...@juno.com] Sent: Wednesday, August 01, 2012 7:31 AM To: texascavers@texascavers.com Subject: Re: [Texascavers] Help - speed, tire size change Mimi, While most everything said is accurate enough, one important factor has been left out. Your current mileage is better than you think; your odometer and speedometer are different measurements by the same instrument. Since your speedometer is under-reporting your speed, your odometer is also under-reporting your mileage. Some of your "mileage loss" is not lost and is merely appearing to be lost just because you are traveling more miles than your odometer records. If you have an electronic speedometer, like almost all vehicles do these days like my 2001 Dodge, you can have the speedometer recalibrated for not much. I had mine done last month for $16 and it just takes a few minutes. Recalibration helps check your mileage accurately because your nominal or even measured tire diameter is not the rolling diameter and it helps avoid speeding tickets. An example of rolling diameter vs. manufacturer's stated diameter: My tire diameter is 36.3 inches, but according to my GPS and my calculations, my rolling diameter is only 34.75 inches (580 revolutions per mile vs. 555 revolutions per mile). Tires are not steel wheels and have considerable deformation while driving. Philip Moss philipm...@juno.com ____________________________________________________________ Woman is 57 But Looks 27 Mom publishes simple facelift trick that angered doctors... http://thirdpartyoffers.juno.com/TGL3141/501921e481b2d21e4584dst51vuc --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: texascavers-unsubscr...@texascavers.com For additional commands, e-mail: texascavers-h...@texascavers.com --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: texascavers-unsubscr...@texascavers.com For additional commands, e-mail: texascavers-h...@texascavers.com
