so i got my 4th gen posi rear end in today!!....the wheels stick out im sure u knew this :-\ I want to put 4th gen wheels on to fix this i know the back will not need spacers but will the front?? nd what if i do not use them.???? Any feedback would be great thank yall.

 

The fronts will need spacers to use 4th gen wheels.

 

The 4th gen rear is now 4" wider than the old one. So the wheels are sticking out an extra 2" on each side. To fit 4th gen wheels on the front you will deffinitely need spacers. Skute.com has lots of info on this.

 

thnx guyz. any 1 know where to find cool wheels to fit on third gens?

 

I have an '87 IROCZ with 16"x8.0" wheels, stock. I upgraded to the 1LE brake package. Now I purchased 17x9.5" 4th gen wheels with 54mm offset. I have 1.75" adapters (not spacers) on the front for these wheels. However, I did not like how close the wheel flange comes to the ball joints, so I added a 1/8" spacer. If you have factory disc brakes on the '86, then you most likely need 2.0" adapters on the front.

BTW: factory 17x9.5" wheels 4th gen wheels have 50mm of offset.

 

So I take it 4th gen bolt pattern is 5x4.75 also? or it just a close match in mm?