We can fit 285/60/18s with no lift at all (31.5 x 11.2).
Which would be like a 285/70/16 (31.7 x 11.2) or 285/65/16 (30.6 x 11.2)would be even smaller than the 285/60/18s that I had on prelift for years, but these sizes really don't exsist, so:
275/70/16 (31.2 x 10.8) should be fine no lift needed:
http://www.discounttiredirect.com/di...40&rd=16&ar=70
http://www.discounttiredirect.com/di...48&rd=16&ar=70
http://www.discounttiredirect.com/di...17&rd=16&ar=70
To go to 285/75-16's you would need the $120 spring lift:
http://www.discounttiredirect.com/di...97&rd=16&ar=75
http://www.discounttiredirect.com/di...94&rd=16&ar=75
oh or 295/75-16 (33.4 x 11.6) after the lift would be my choice if I had to stay with 16s:
http://www.discounttiredirect.com/di...95&rd=16&ar=75
http://www.discounttiredirect.com/di...55&rd=16&ar=75
http://www.discounttiredirect.com/di...97&rd=16&ar=75