Finally got the 22s on the GLK!!
If you are going for the tuner look you gotta lower it.
Now this looks cool (although totally impractical)
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applies as well for the GLK tire sizes and profiles, e.g. 17"/20", and the 22s", with regard to affect on fuel economy.
Key words are weight, rolling resistance (size, thread design and rubber compound), flexing the of tires, and size. So it could go either way.

I think they are sweet wheels but there is a lot of open area looking into the rims that make the rotors look undersized for the car but the braking should not be affected. Again love those wheels.


Wheels are a lot of air (betwen the spokes) so I figured the reduced rubber from the lower profile tires would offset the increase in wheel mass.
Thanks for the info!






