The tire height of the stock 180/55-17 is 55% of 180 mm so 99 mm.
The height of the 180/60-17 tire is 60% of 180 mm so 108 mm, the difference is only 9 mm.
If you extend the tie-rod 5 mm the rear is raised by roughly 16 mm so its a more efficient way to raise the seat.
The benefit of fitting a larger tire is that you dont reduce the gap between the chain and the swingarm.
Some people run into issues when raising the rear too high because the chain rubs too much on the chain sliding shoer.