I have a 2009 rx8 GT and I plan on buying a set of varrstoen wheels. The wheels are (front) 19x9.5 and (rear) 19x10.5. The offset is +30. Im not sure whats the biggest tire i can run on the rears,i want a really beefier tire and not so much stretch . Im on d2 coil overs right now. And my fenders are already gutted,rolled, and pulled. I would love to run a 275/35 and that should be a minor stretch on that wheel. But I'm pretty sure i can run that. If you guys have any advice on a tire size, the help is greatly appreciated

 

I did this research a while ago here is the link for my results. Check out the "will it fit thread" too or the "aggressive wheel fitment thread." The info is all here been covered plenty of times you just need to know where to search.
https://www.rx8club.com/series-ii-wheels-tires-brakes-suspension-165/19-staggered-fitment-guide-224543/

 

All the sries 1 wheel fitment info will also apply to series 2. Look there as well.

 

FYI Varrstoen wheels have a pretty bad reputation here.