I currently have a 2/4 drop on my 99 obs sierra, i am about to do a 4/6 drop. I am running KMC SS's 20x8.5 with a +10mm offset and im not sure the back space but they stick out the fenders about 1/2". So im looking at new rims. What Offset and backspacing should i be looking at to tuck. I eventually plan to bag the truck but for now its just gunna be static dropped. Any help would be greatly appreciated. Thanks Matty.k
Edited: 7/1/2008 12:08:44 PM by Balzout Sparkin
Well I'm no genius but i'll try to help you out. You said it sticks out about a half inch with a +10mm offset. Well 1/2" equals roughly 12mm. So a +22mm offset will set you in enough to take care of the 1/2" but you'll probably want to go with a +28mm offset. That will bring the wheel in another quarter inch. Which will probably help a lot when bagging it later.Again, I'm no genius so don't hold this as gospel. If i'm wrong someone please help the brother out.
depending on how wide the wheel is would depend on your offset. The chart i have says use a +25 for a 8.5 wide wheel. I would up that just a tad if you want it to tuck. somewhere between a + 25 to a +35 I am running a 20X7.5 with a 40mm offset on my yota and it is recommended to run a +15 from the factory. I can turn lock to lock and i tuck about an inch or so of my wheel. hope this helps
on a 8.5 you need atleast a 18mm offset
Edited: 7/2/2008 10:42:11 PM by GET TWISTED
Edited: 7/2/2008 10:41:12 PM by GET TWISTED
Edited: 7/2/2008 10:40:09 PM by GET TWISTED
20x8.5 NEED +30 TO TUCK GOOD AND TURN VERY LITTLE MY BUDDY HAS +35 ON A 20X8.5SORRY BUT IT WAS THE BEST PICT I HAD AT THE MOMENT
What about a +28mm Offset on 20x9 with a 6" Backspace????
A 20x9 w 6 inches of back space should tuck fine. My 22x9.5's w 6 inches o back space tuck but it's tight.