Steel wheels on 2010 GLK350 4matic
Look it up on TireRack by comparing the Metris wheel specs, then use a wheel calculator to see the difference.
any ideas.
In general, the lighter the wheel/tire combo, the better the handling, performance, and fuel economy. A difference of 4-5 lbs per wheel can mean 16-20 lbs total LESS rotational mass, which translates to lower energy needed to get moving (acceleration) and other good things.
I am mainly a commuter and would personally prefer the larger sidewall for ride comfort.
As long as you keep the tire circumference the same as stock (google the miata tire size calculator) then the milage should remain similar.






