Just wondering if this is too aggressive. I am an advocate of the non-staggered camp so I want the same setup all around.

Pondering whether 19x9.5" +38 offset wheels with 255/35/19 tires (only 0.2% off in circumference from stock size) would fit on a stock RX-8 without any fender rolling.

I know the rear should be fine, but the front is the concern. Would it rub the inside of the fenders? Would it be sticking out from the wheel well? Ideally it would be flush with the fender; any more sticking out is too much IMO.

Please post pics if you have seen this! (17", 18", 19" doesn't really matter, the topic of concern is *width*)

Of course the less-aggressive option would be to just go with 9.5" +45 or 8.5" +38, though both would give less dish...

I'm running 19x8.5 +40 255/35 front and back with no rubbing.

Not sure about 19 inchers but I'm running 17X9.5 with a 44 offset and stretching a 255/40/17 Falken RT615 on it and no problems. I'm also lowered on MS springs and corner aggresively at autocross with no rubbing.

http://i40.photobucket.com/albums/e218/Eosphoto/RX8/Wheels/IMG_2046Medium.jpg

should clear, wider tire size may rub depending on how wide they are and how low you are

I am running 255/40/18 on 18x9.5 +42 with stock springs no problems but the front is almost sticking out of the wheel well. If you went with a +38 offset you may want either 255/30/19 or even 245/35/19 if you don't want to roll the fenders. When my rear is fully compressed I am within a few mm of the fenders.

i have 18x9.5 +38 all around on 265/35R18 and i have no problems.

I bet it does in the rear, you just don't realize it

i have 18x9.5 +38 all around on 265/35R18 and i have no problems.

Wow, really? Do you have pictures? I'd especially like to see how the front tires line up with the fenders... I'm guessing the rears will be tucked right at the edge almost, judging by the pictures I've seen of 8.5" +38 wheels...

Not sure about 19 inchers but I'm running 17X9.5 with a 44 offset and stretching a 255/40/17 Falken RT615 on it and no problems. I'm also lowered on MS springs and corner aggresively at autocross with no rubbing.

http://i40.photobucket.com/albums/e218/Eosphoto/RX8/Wheels/IMG_2046Medium.jpg

Hey, Cosmos, I saw your ride in another thread, and it's the closest thing I've found to what I'm looking for. Hot stuff... Do you have any pics of the front wheel lined up with the fender? That'd give a general idea of how much space is left... If any...

I understand that your tire size is actually a little shorter help, so that may also be helping avoid the rubbings...

or how hard you can corner, I clear with Yoko Advan Neova AD07 265/35-18 on 18 x 9.5 @ 45mm but rubs the rear lip extension with same @ 38mm (see fender/tire relationship under full cornering G's below), this tire runs wider for it's rated size than most too

http://pic17.picturetrail.com/VOL846/454183/13018294/l-224117123.jpg

After some reading it looks like this isn't possible. +38 will be sticking WAY out of the front fender..

And even +45 looks like it won't be possible. This pic has me downright scared!
http://www.rx8club.com/showpost.php?p=1319054&postcount=11

Ja you ought to be scared.