Lift, Wheels, Tires

[DSavas15]

Sorry for adding another post on this and please don't kill me, however I was hoping for some feedback from people who either have or know if there is any issues with the following. 

 

I am looking to do a BDS 6" suspension lift. I was told that I could not use the factory 20" "snowflake" wheels with 35x12.5x20 tires as it would cause tie rod interference. The installer refuses to put spacers on the front to "allow" this to work. (I am not saying i would like to use spacers, it was just strictly explained they will not do it). The back they would allow a spacer to try and keep track width as close to the same as possible.  For those who used the BDS lift. Would a +18 offset on a 20x9 inch wheel suffice without the issue of trimming, cutting, etc. I have looked through many of the current topics but i have not seen a +18 offset on a 20x9 setup but that was what was recommended by the shop. I was planning on running Cooper SST or AT3 all-terrain tires with the set up. 

 

Offset is something that is new to me for sure and this is my first lift. I am not concerned too much with the tires having an aggressive stance or sticking out as long as its ideally less that 1.5".

 

Thanks guys