Triathlete -

It could also be offset or width of your wheels. They look like they stick out a bit further than stock, which will make clearance for taller tires more difficult. I've got the OME 912 / Torsion Bar lift and I was able to get my Nitto Terra Grappler LT285/75/R16's (which are 32.68" x 11.33") on stock wheels with only some minor trimming and pounding the rear of the front tire wells in about an inch.

Nice looking rims, by the way!