Anyone know if the SportEdition 21" wheels weigh less than other Porsche OEM wheels (specifically 19" and 20"), potentially resulting in increase in a slight performance and fuel economy?

http://www.suncoastparts.com/product/21958SESB.html

Searched a bunch and only found one mention in regards to this topic.

 

No way they weight less !! If you want look and performance why not hre ? Or adv ? Vividracing had some on stock 20inch p40 hre for panamera .I dont know if they will fit a cayenne ? Also what tires do you plan to use sir ? I have used several wheels with my cayenne 957 and I can tell you the biggest performance gain is from tires .
Have anyone used toyo r888 on a cayenne ?

 

About fuel economy , my fuel consumption is 13l on highway with 20 inch turbo my11 wheels and 14L with cayenne turbo 21inch oem 2008 wheels

 

Sorry, i'm NOT concerned about tire performance, i should have better specified in my question.

Really just interested in whether the 21" OEM wheels are heavier or lighter than 19" or 20" OEM? Resulting in better or worse fuel economy.

For the same reason performance gains are achieved from PCCB (Porsche Ceramic Composite Brake) due to the light (50%) reduction in unsprung weight over standard brakes.

 

I'm pretty sure they're heavier and it will hurt the fuel economy somewhat, not to much though.