I run 215/35-19s as do several other CEGers.
I would highly recommend the following:
> 225/35-19 - the 215s just don't provide enough width. Given how thin the tires are, a wider tire for rim protection IMHO is a must.
> Roll the fenders. Depending on your drop, a must or you will damage up your tires, bad.
> Camber kit - or you will get very bad uneven tire wear (ask Antonio)
> IMHO, unless you have another car to use as a daily driver, 19s are too big - you will bend rims (ask Antonio)
Cons:
> Tire selection in 19s is very limited in comparison to 17s or even 18s
> Tire prices are ridiculous in that size
> The bigger you go, the more performance you lose
HTH