What size spacers to use?
 

Cray Wheels - Corvette Wheels - Scorpion Black
Would i need spacers with these rims on a 2004 chevy blazer 4wd 4dr

Those wheels have almost 7" of backspacing and are 2" wide than the stock wheels you have. So if you used a 1" spacer to get the correct backspacing they will stick out about 3" further than what you have now.

If you are sticking with the same diameter tire as stock, about 29", you'll be losing 2 1/2 inches of sidewall going with the 20" rim to boot. If you do any offroading the more sidewall you have the better.

These wouldn't be my choice for a 4X4 unless I were running 35's or larger. However, they are some great looking wheels.

Hey thanks for the reply after some carfull research and planning i came up with the same the back spacing is 6.5 in or so and they would stick out on the front. As for offroading i wont be doing much of the 4x4 is for canadian winters which i have winter rims and tires for.