I'm running the MB72 from Discount Tire but in a 17. My rim width is 8.5 and I'm pretty sure the b/s is 4.25. They stick out about an inch from the stock flair with a 285/70/17. I think that b/s is about ideal, if you added the wheelspacer in too it would seem to put more stress on the hub bearing assy. It would also increase the scrub radius.
[CENTER][COLOR="black"][/COLOR][COLOR="Cyan"]My JK Build thread [url]http://www.jeepforum.com/forum/f22/wanderlust-thebosss-jku-build-1483041/[/url][/COLOR][/CENTER]
[SIZE="1"]JK : AEV, Synergy, JKS, Teraflex, Bilstein, GoodYear, M.B, LoD, Ramsey, Hella, Uniden, Smitty-re-bilt rails, Safari Straps
:sold:WJ : BDS, Teraflex, JK Rubicon shocks, GoodYear, JK wheels :sold: [/SIZE]
[COLOR="Black"][CENTER][SIZE="4"][FONT="Showcard Gothic"][COLOR="Black"][URL="http://groups.jeepforum.com/built-not-bought/"][COLOR="Black"]Built Not Bought #690[/COLOR][/URL][/FONT][/SIZE][/COLOR][/CENTER][/COLOR]
[COLOR="Red"]"I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them." Thomas Jefferson[/COLOR][SIZE="2"][/SIZE]