Fuel Consumption Question - Rims - Please look

[tradertt]

Hi, I have a question which I wonder any one with experience could help answer.

If .. IF I have 2 choices of Wheel Rims ..

1) A 15 inch rim that is heavy (8kg)
2) A 16 inch Rim that is light (6kg)

Which will have a higher fuel consumption? I know that it takes effort and of course more fuel to move a rim that is of bigger size ... but with its weight into effect ... will it be offset or even have better fuel consumption than the 15 inch one?

Thank you for this silly question.

[hellr]

torque = distance from axis * mass

I am guessing the 16 inch rim would take less torque to turn. Where all the weight is located on the wheel makes a lot of difference as well. Two wheels that weigh the same amount and have the same diameter might take different amounts of torque to turn depending on where all of the weight is located. If the rims are a similar style I would go with the 16" rim (better looks as well :D)

[Diesel Dud]

or u can alwasy get 18"s