2011 3 lift tires that fit

Ok need some help 2011 put 3 rough country lift on I have 20 einki wheels 9.5 width the ones that used to come on older tundra before lift I had 285 50 20 with no problems went to a 305 55 20 had to trim but rubbing a arms badly buying new tires need to know if a 285 55 20 will do the trick

 

Any input would be helpful at wits end don't know which way to turn if someone with this particular set up has some info ot would be much appreciated

 

Using the tire size calculator on here, here are the differences in height and width. Will this be enough to back you off the area thats rubbing?

 

Ok so have 285 55 20 on now rubbing on body mount and fenders is gone but still rubbing uca while turning and to close to inside as well any suggestions other than new rims or wheel spacers was curious about taller spindles to restore ucas back to normal angle as they were before the lift has anyone done this to solve the same problem before. All input gladly excepted