I couldnt find a tire tread gauge so I used a caliper (measurements are in inches)
First set are not on the rims
1: (2) Kelly Safari SUV ~ tread depth is .22 ~ size is 265/75/R16
2. (2) Kelly Safari TREX ~ tread depth is .27 ~ size is 235/85/R16
Second set is on the rims:
3. Firestone Wilderness LE ~ tread depth is .16 ~ size is 265/70/R16
4. Winton Winner A/T ~ tread depth is .15 ~ size is 265/75/R16
The set of tires that are not on the rims look dang new and have great tread. The tires that are on the rims are in decent shape.
This is the only picture I have that sent to my email and turned out... not sure why they turn weird and get a grey block covering half the picture when i email them but if you would like the other three pictures then I can text them to you.
The picture above is from the set of tires not on the rims (Kelly Safari TREX i believe)