Who says larger wheels = less MPG

I installed the 28" tires on my Camaro to slow the car down and improve my roll out at the starting line. My car went from running 11.7x to 12.0x in the quarter mile as the cut off for Street class is 12.00. However mph went from 110 to 112 and my gas mileage improved when driving on the street.

As far as the typical production large rims and smaller sidewalls, I think it is mostly show as it certainly sacrifices the "go", although cornering is very generally improved due to less sidewall roll on average tires.

I would personally much rather have a smaller rim and a taller tire for better ride quality as i really do not care about cornering ability (within reason).

 

sorry.. i thought inertia was the same as rolling resistance.. unless rolling resistance meant friction.. which i thought was contact... anyhow performance cars usually have bigger rims to clear big break pads and rotor...you can't have a 6 pot in a 13" wheels..

also when you have 450hp ... what's another inch of inertia...

 

larger diameter rims do allow for larger diameter rotors. Side clearance is more of a consideration for brake kits (after you provide for clearance of the rotor. If there is adequate side clearance, a 13 inch wheel can provide clearance for a 6 pot caliper.

 

Read the Cummins Fuel Economy pdf. Great info in that piece.

 

i guess... i mean with money anything is possible right? realisticly do you know of a car with 13" wheel with 6 pot... i guess this what i meant...

F8L... thanks... i stand corrected... rolling resistance is friction.. i got confused with inertia since it's resistance to motion ...

 

It's all good man. I thought you'd like the article.

 

i did like the article.. but i guess it was geared towards trucks where stagnation is larger than our prius...so some of their est. calculations are different... but the main concept is there.. very interesting though...