XPost: comp.os.linux.misc   
   From: daniel47@nomail.afraid.org   
      
   On 10/12/2025 1:09 am, The Natural Philosopher wrote:   
   > On 09/12/2025 11:57, Daniel70 wrote:   
   >> On 9/12/2025 9:08 pm, The Natural Philosopher wrote:   
   >>> On 08/12/2025 22:39, rbowman wrote:   
   >>>> On Tue, 9 Dec 2025 00:20:38 +1100, Daniel70 wrote:   
   >>>>   
   >>>>> I usually put it down to my Tyres being under-inflated, so their   
   >>>>> diameter is less so it takes more revolutions of the tyre to   
   >>>>> cover a specified distance.   
   >>>>   
   >>>> I don't think under inflation would change the diameter enough to   
   >>>> throw the speed off that much. In my case the diameter of the 14"   
   >>>> wheels is noticeably less than the 15". I see that in the spring   
   >>>> when I'm going back to the 15". If I jack the car up enough so the   
   >>>> 14" leaves the ground and I can remove it sometimes I have to jack   
   >>>> a little more to get the 15" on.   
   >>>>   
   >>> There is no such thing as diameter on a tyre. It isn't circular.   
   >>> Might as well ask yourself 'what is the diameter of a tank track'   
   >>>   
   >>> What counts is circumference and the tyre is elastic enough to expand   
   >>> a little under high pressure.   
   >>   
   >> .... and that pressure would get higher due to usage heating the tyre.   
   >>   
   >>> And to wear a little lower.   
   >>   
   >> ... which would reduce the tyres diameter, so decreasing the Ground   
   >> speed.   
   >   
   > THE TYRE HAS NO DIAMETER., It is not circular.   
   >   
   Say WHAT?? Is it elliptical or something??   
   --   
   Daniel70   
      
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