Better Mileage full PSI

[zieglerj-pdm-specialist]

Would I get better mileage on a 2004 Yukon XL DEnali with 44 PSI 275/65/17 or 52 PSI 305/40/23 on a all highway Mileage for 599 Mileage?? Desperate need I'm leaving in July 29th. Im Cleaning and re oiling the K&N Cold Air intake. Thanks in advance!!

 

[ccapehartusarmyINF.(ret)]

the size rims and tires dont make any difference what makes the difference is the tires are inflated to the max recomended PSI
the overall diameter of those two sizes the 275 65 17 has a overall diameter of 31 inches
and the 305 40 23 has a overall diameter of 32.6 inches
so a difference of 1.6 inches is going to have almost no affect on your fuel economy
people always get pissy when i post facts on how they really affect things like mileage and performance

 

[zieglerj-pdm-specialist]

the size rims and tires dont make any difference what makes the difference is the tires are inflated to the max recomended PSI
the overall diameter of those two sizes the 275 65 17 has a overall diameter of 31 inches
and the 305 40 23 has a overall diameter of 32.6 inches
so a difference of 1.6 inches is going to have almost no affect on your fuel economy
people always get pissy when i post facts on how they really affect things like mileage and performance

Im not mad at all, I was looking for the truth and you gave it and I commend you for telling me the truth. Thank you

 

[YukonXL04]

You will get better mileage with the 17s. The 23" wheels weigh more therefore more power to turn them.

 

[Rangel]

Haven't seen a 23" wheel in forever.

 

[Goodinblack]

Haven't seen a 23" wheel in forever.

This.

They never caught on lol