Quote:
Originally Posted by royanddoreen
Same circumference is not the case with the Niro as I stated earlier the circumference of the 18” option on the Niro is 1.1” larger than the 16” standard wheel which is unusual but i’m Thinking this is killing the mpg.
|
Not to be pedantic, but:
Quote:
Originally Posted by royanddoreen
The 18” tires have a 1.1% larger o.d. also.
|
1.1% is way less than 1.1", if your wheels are less than 8'4" tall. 
In either case the sidewall on the 18" rimmed tires will be much narrower, so if it has to flex the same distance it will bend much sharper, and that's all extra friction.
__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.
|