[LeanBurn]

Still a noob at this stuff, although I am #1 for fuel economy on the other forum I frequent all because of stuff I found on here!

So, recently I upgraded from 20lbs stock steelies to 14lbs 2010 Prius wheels on my 09 Corolla. The Prius wheels sucked the wheels into the wheel well 10mm. Will this hurt fuel economy or help it? I can if needed get wheel spacers to push the wheels out further, but I am hesitant to spend money and yield nothing.

I have chloroplast upper and 3/4 lower lower grill block, lowered the front 0.5" rear 1.5", my mirrors are folded in and I have alright results so far in my 133K kms of ownership:

Lifetime : 6.121L/100km(38.714mpgUS)
Maximum: 5.082L/100km(46.287mpgUS)

Anyways, any feedback would be appreciated...and if there is already a thread on this I apologize as I did a search but didn't see it.