I bought 14 x 6 4-100 Kosei K1-TS from Tire Rack in November for 104.00 each including centering rings and lug nuts. They weigh 9.1# each less center cap, valve stem and lug nuts.

If you go the 14 x 6 route tires are cheaper and lighter as are the wheels and you will have a lower center of gravity with the same suspension geometry. You will also have shorter gears given the same trans and diff as someone who runs the 15 x 6. ALL BIG plusses in my book.

Two BIG possible concerns---will the 14 x 6 wheel clear your calipers? How long will decent 14" DOT rubber be available (I run V710's)?