I am running 33x12.5R17 wheels with 4.5 BS & 2" lift and the tires stick out about 1/2 inch outside the stock flares. Under off-road flexing they squeeze under the rear flares and no issues with rubbing in the front lock to lock.

With 4" BS you are looking at the wheel sticking out about 1" outside the stock flares but with a 4" lift you shouldn't have any issues squeezing that tire under the flare....but you may have issues with highway act in your state????

 

Thank you eMetal and to all those who posted informatively.
Waiting to hear back from one source, but it seems like they only come in 4". I'm not sure about the highway act, I'll have to SEARCH that one.

 

heres is the link for you: https://www.jk-forum.com/forums/search.php

 

What rims are you looking at? Because they make plenty of 16" and 17" rims for the JK with 4.5" backspacing.

 

5" no rubbing... you decide.

 

raceline monster beadlocks. pretty sure they are only available with 4" bs. I have seen a couple other pics of Jeeps with them and they look good but, they also had the bigger fender flares. I want to keep my stock sahara flares.

 

i also like those same wheels. and i was wondering about the 4 inch back spacing. and if they will work with 37 inch and 4 inch lift. and do you remember how heavy they are. thanks