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mcrews · 09-05-2012, 07:59 PM

the both have the same diameter according to tirerack.com 30" (275) 30.1 (255)
As someone else mentioned you have to change the second number

here ia tirerack chart for a tire that has both sizes
http://ecomodder.com/forum/showthrea...mpg-23182.html

09-05-2012, 07:59 PM	#9 (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	the both have the same diameter according to tirerack.com 30" (275) 30.1 (255) As someone else mentioned you have to change the second number here ia tirerack chart for a tire that has both sizes http://ecomodder.com/forum/showthrea...mpg-23182.html __________________ *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