2013 Ram 1500 tires

[orangehigh]

stock 20" rims with 275-60-20 tires.
Would like to go bigger if possible. Any idea how big I can go without rubbing?
Assuming spacers are available to help compensate if necessary?

 

[Typetwelve]

I'm running 275/65/20 Toyo Open Country ATII and they rub a tiny bit on the driver's side when steering full limit left.

It's very minor...but it happens...so take that in mind.

 

[Galion]

I'm running amp mt terrain masters 305/55R20's, no rubbing on stock rims but that's the widest I could run and still clear, height wise they have lots of room though.

 

[14RAM4X4]

I'm running 295/60r20s on stock painted 20x8s. I rub at full lock in either direction. It's minor though.