Hyper Mileing

[Langod]

Originally Posted by Seanohue

Ever since I got a new set of tires, the mileage on the WRX took a nosedive. I used to get 26, now I get 21. I've tried "hyper mileing", but trying to accelerate with just the boxer-4 and not having the turbo kick in is painful, since it doesn't even start spooling until 2800.

Same thing happened a few years ago when I put new tires on my Olds Aurora. (And honestly, it happens to almost every car I've ever swapped tires on -- the Aurora just had the biggest drop in MPG.)

You probably do what I do -- you put on better, stickier tires, right? Maybe even wider ones?
You increased your rolling resistance. Amazing how such a little change adds up, eh?