That tyre size is
WAY too big! It will adjust your gearing making it more sluggish to pull away and accelerate and ruin your fuel economy. Plus they'd look pants in your arches!
The standard size for a T5 is 205/65/16 so if you go for a 19" rim you should be looking at 255/40/19 or something like that.
Use
THIS tyre size calculator to determine what tyre sizes will keep as near as possible to the original overall circumference by adjusting tyre width and aspect ratio, then search that tyre size at online tyre suppliers like Tyre Shopper or Camskill.