Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - new '04 suburban. coroplast? hood scoop? air dam ?

mcrews · 03-18-2014, 06:58 PM

additional thoughts on upsizing:
need to increase diameter at least 5% to have any real mpg gain.
Don't increase rim size, only tire diameter.
a taller tire 'may' only weight 1-3lbs more so rotational weight increase is really insignificant
Need to do atleast 50% freeway driving for the upsize to work
The upsize really doesn't harm intown driving because we're driving slow anyway

03-18-2014, 06:58 PM	#8 (permalink)
mcrews Master EcoModder Join Date: Oct 2009 Location: Texas Posts: 3,523 The Q Sold - '02 Infiniti Q45 Sport 90 day: 23.08 mpg (US) blackie - '14 nissan altima sv Thanks: 2,203 Thanked 663 Times in 478 Posts	additional thoughts on upsizing: need to increase diameter at least 5% to have any real mpg gain. Don't increase rim size, only tire diameter. a taller tire 'may' only weight 1-3lbs more so rotational weight increase is really insignificant Need to do atleast 50% freeway driving for the upsize to work The upsize really doesn't harm intown driving because we're driving slow anyway __________________ *MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."* ECO MODS PERFORMED: First: ScangaugeII http://ecomodder.com/forum/showthrea...eii-23306.html Second: Grille Block http://ecomodder.com/forum/showthrea...e-10912-2.html Third: Full underbelly pan http://ecomodder.com/forum/showthrea...q45-11402.html Fourth: rear skirts and 30.4mpg on trip! http://ecomodder.com/forum/showthrea...tml#post247938 Last edited by mcrews; 03-18-2014 at 07:21 PM..