Anyone lose MPG after switching tires or wheels?

Fanis said:

Seems pretty normal to me. Wider, stickier tyres along with greater mass equals worse gas mileage

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After doing some google research it appears the OEM wheels are actually really heavy. I saw 24-26 lbs quoted. So my 18" wheels are probably slightly lighter then. I'll have to try weighing both to see if the manufacturer is even honest about the weight