The Sumitomo HTR200 comes in 170/70rr13
They're the 3rd best tire in the Green Seal 2003 LRR tire compro.
Only problem is that they're not much good in snow.
__________________
__________________
"I got 350 heads on a 305 engine. I get 10 miles to the gallon. I ain't got no good intentions." -The Drive By Truckers
Get 14" HX rims and go for the Bridgestone Potenza 14/65/165's. They were OEM on the Insights. Yo=u cant beat them. The combo of the HX rims and Potenzas are worth 3-5 MPG.
Vredestein Quatrac II tires come in 165/70/13 and are LRR. that is the stock size for the vx so it should be a fairly efficient size, nice and narrow at least. they probably also have the 175s. They are 53$ each. the sumitomos are cheaper. the vredesteins would be better in the snow and have a 60K treadwear warranty.
thats a good idea with the hx rims and the insight tires.
I also like those insight wheels, because they are so aero (I wonder if they weigh more), i bet they are hard to find and expensive.