I respectfully disagree with ChickenLittle. Jim’s programs most commonly call for either a 90% or 85% TM. This means you set your TM at 90% or 85% of your estimated 1RM. So, an 85% TM in your case would would be 85% of 265 lbs, which mean your TM would be ~225 lbs.
Now, the percentages you flow through each workout (or week to week) are based on percentages of your TM. So for week 1, your 531 main lifts are at 65%, 75%, and 85% of your TM for that program (which in the case you mentioned would be based on 225 lbs).