I of course truncated it - but it says point-blank any change to the landing gear not covered in the type cert is major. So if the type cert says 6:00x6 and you want 8:50x6, you are looking at a low probability of success. Getting that Anchorage FSDO letter (a copy will do) increases your chances dramatically.
I recommend law school for mechanics.
When I filed for insurance this year, they asked if my landing gear was modified. I asked the broker if bigger tires count, and after he checked, he said that no, it didn't count as modified landing gear.
Curious if both the FAA and insurance operate on the same definitions.