Add brown rice vinegar and sugar into a mixing bowl. Whisk. If it takes a long time to dissolve, you can warm the brown rice vinegar to make it dissolve faster. Add carrots and let sit overnight.
Sriracha Mayo
Add sriracha sauce, lime juice, and vegan mayo to a small bowl. Whisk.
Wraps
Warm tortillas on the stovetop or in the microwave.
Spread sriracha mayo on tortilla. Layer lettuce, cucumber, avocado, pickled carrots, and cilantro on top.
Fold the left and right sides inward. Then fold over the bottom, tucking the ingredients in as you roll tightly.
Notes
The separate components of this recipe will last about 2 weeks in airtight containers in the fridge. (Keep them in individual containers until ready to assemble.)