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Tire size & mpg

domdes

By domdes
in Tires, Wheels & TPMS

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domdes New Member

domdes

Posted
Posted

Hi everyone I am new to this sight so i'm sorry if this has already been asked, but hear it goes . I have a 2010 silverado 1500 Z71 4x4 5.3 stock tire size is 265/65/18. Ordered RC 2" leveling kit. I want to go to ether 285/65/18 or 275/70/18 Cooper AT3 on stock rims, how much mpg loss will I see from stock tires? I also ordered a K&N 63 series aircharger intake. Wondering how much increase in mpg that will get me. Anyone have these modifications on there truck? Any information would be great. Thanks in advance.

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

I have 275/70/18's and lost right at 1mpg

chupe442 Enthusiast

chupe442

Posted
Posted

Gains in intake, minimal... Loss in tire size is going to be noticeable but not huge (maybe 1-2). I like the Cooper AT3's. Had them for a couple of weeks now. A bit louder than the Bridgestones , louder than I remember my BFG All Terrains but way cheaper! Did the 2" level and went with 275/70-18's Nice look!

domdes New Member

domdes

Posted
  • Author
Posted

Thanks,chupe442 the Cooper AT3'S ,are they p-rated or LT's? In other forums people say they lost up to 4 mpg with LT's because of the extra weight.Ryanbab Z71 what type of tires do you run?

  • 1 month later...
Snow White Enthusiast

Snow White

Posted
Posted

I have E rated general at2 285/60/18 and tire pressure on these tires is the difference between 4 and 1 mpg loss lol.... 2nd tank of fuel i'm running 48fr/38rear and only down 1 mpg. previous tank was 3 running 34 all the way around.

 

at least now i won't be worried putting a load of mulch, stone, or whatever in the bed because the tire is waaaaaaaay over kill lol.

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