I was talking about 305's

Ok, I understand the 285 x 4, I'm just unfamiliar with people running 285/305 on the street.

On a stock Z, that's a lot of added weight & drag.

I agree, maybe a tad bigger on rear but the stock fronts are plenty wide, extra weight, PS issues:iagree:

If you are leaving your fronts with factory dimensions and 245 width, then I would leave the rears with the same ratio to the front, and go with a 275 in the rear.

If you're willing to increase the front width, then go wider in the rear.

275/305 here

I run 265/305

265 tires weigh the exact same as 245

the 305 tire is only 3lbs heavier than the 275. so you only gain 6lbs total at the rear axle.

reallllllllllllllly small gain to make you not want more grip.

I can make a chipotle stop and take a mean dump to lose a few lbs to counter the tire weight :tiphat:

Anyone who thinks 245 fronts are enough, go run your car, Really run the car and then try wider. Trust me, 265 minimum fronts handle incredibly, 285 to me is even better

I need new tires on the front soon. Can I run one of these wider sets without switching the rears at the same time?

Technically yes you can. Would I? No.

Best thing to do is to replace all 4 tires at the same time. Mix matching fronts and rears you may run into different compounds, different wear, different diameters, etc

Also you should want to keep the oem 30-40mm width gap between the front and rears. If it's just a small window of time between getting your fronts then tears you should be fine

When you went with bigger tires was 265 40 and 305 35? I'm assuming on stock rays? Also what tires did you weigh?

Anybody see an issue with running 275 35 F and 305 30 R? I have eibach springs if that should affect anything? I've never gone this big before so a little worried about performance.

265/35-305/30 is a better set up.

I'm dropped 1"+ on KW-V3 coil overs

Ok, maybe it's not the extra weight that's the issue, but certainly there's increased drag with the wider tires.

All I know is the car feels slower to me. Not massively but, noticeably...at least to me. Maybe my perception has to do with the fact that the Hancook V12's I was running (at oem size) were so bald that the new, fatter tires & new tread make me think it's slower:icon17:

265/35-305/30, yes, on Sport Pkg. Rays

245/275 RE-11 vs 265/305 RE-11

all the info is on tire rack they weighed them for me lol

well step one is to throw away V12's they're trash even when brand new lol

all tires will feel a little squishy and whatnot new based on lots of meat and compound on them. unless you buy something that only comes with 6/32" from new like a R888 etc....