VX WHEELS How much MPG improvement will they make?

[panamacolin]

Hi,
I have a 1996 civic DX hatchback with 17 inch rims on it at the monent. I am getting an average of 31 mpg with combined highway/city driving...mostly city with the a/c on 95% of the time its hott here in florida.

I just won a set of vx wheels on ebay for $240.00 + 45.00 shipping the wheels are minty and they include the center caps. no curb rash on them.

Wondering how much fuel improvement I should expect when I swap these wheels on with some low rolling resistance tires. Who makes some good LRR tires that will fit the rims?

Thanks!