17x7.5's with trd springs question

[ToyotaTEch21]

I was checking some numbers and trying to look around on here but I didnt find exactly what I wanted to know so...

If I ran 17x7.5 ET45's with 215/40's dropped on TRD's would I be ok?

the factory 17's from what I read are 17x6.5 ET51's so thats 5.7" of back spacing. the ones i'm looking at would net 6" of backspace.
or could I go ET30 which would be 5.4" but would they rub the fenders when lowered?

[Kaotic Lazagna]

I'm going to say that those 15's may rub d/t the 215's, but I'm not the best when it comes to this. Kimona is your person to go to. Just don't get an offset of +30, since that is way too low.

[ToyotaTEch21]

Actually I just finally found a post saying it should be ok with the ET45's. was even posted by Kimona lol. I don't know how I missed it the first time around.