Yes. The 275 does run taller. The 265/305 combo are equal at a 26.3 diameter I believe.

FWIW, I'm running 275/35/19 on a 9.5 up front and 305/30/19 on a 10.5 in the rear. These sizes fit perfectly in my opinion. You can't notice the overall height difference, and for PS4S's, a 275 is just right on a 9.5".

https://im1.shutterfly.com/media/47a...D720/ry%3D480/

https://im1.shutterfly.com/media/47a...D720/ry%3D480/

https://im1.shutterfly.com/media/47a...D550/ry%3D400/

i just put Michelin PSS 4S on the car...
265/35 295/30
I had 305 in back and wanted just to go a bit smaller....
my car has no FI, but it is a compromise, between appearance / autocross
since autocross is just fun, I will take the disadvantage,
but all around, I enjoy the Michelin in all conditions, except when it gets cold

The difference is still less than 3%, it should be fine.

I just put some 305's on my stock rears and didn't replace my fronts. My car feels a little unstable/loose in the rear. Would putting a 265/275 fix this?

A wider rear tire should not make your rear feel unstable or loose. the whole point of more tire in back is for more traction back there

if they're brand new tires they'll take a couple weeks to break in and burn off any protective gunk on it that might be left from the mfg

that said, we don't know anything about the condition of your fronts. given that you have a 2016 they should be pretty good still

I drive a lot. My rears lasted just under 38k. I'm wondering if there isn't enough rubber up front. I see now my last post, a 265/275 up front is what I meant. I'm basically running 245/40 and 305/30.

I have stock 2014 Nismo wheels. Could I put my 285 /35/19 to the front and get 305/30/19 for the rear?

Yea , but no all tires are the same
Some tires will rub, some not
here potenza RE 11 on 285/35 on 9.5 wheel

https://lh3.googleusercontent.com/Zb...B=w370-h657-no
https://lh3.googleusercontent.com/ql...=w1168-h657-no
here with nitto invo 275/35 /same wheel, the invo scraped at bit, see the bulge with the 275? and no bulge with the 285?same wheel different tire
https://lh3.googleusercontent.com/5q...=w1168-h657-no