People Running 09 stock Rays

RumbleFish · 04-19-2016, 04:31 PM

Quote:

Originally Posted by schellingr

I didn't notice anything different performance wise when I switch to S04 285 on the rear. Or are you talking about people that put 305s on the rear?

I was talking about 305's

RumbleFish · 04-19-2016, 04:38 PM

Quote:

Originally Posted by cjwsrt6

Yes, I autocross on 285 square and enjoy it because I can lift off oversteer... If it was daily, I'd do the 285/305

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.

barncobob · 04-19-2016, 05:19 PM

Quote:

Originally Posted by RumbleFish

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

Nick M · 04-22-2016, 12:54 PM

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

FPenvy · 04-22-2016, 01:12 PM

Quote:

Originally Posted by RumbleFish

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 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

cjwsrt6 · 04-22-2016, 01:34 PM

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

firulice · 04-22-2016, 10:14 PM

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

FPenvy · 04-23-2016, 10:37 AM

Quote:

Originally Posted by firulice

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

V8Killer · 04-24-2016, 10:15 AM

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

Quote:

Originally Posted by FPenvy

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

V8Killer · 04-24-2016, 10:53 AM

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.

RumbleFish · 04-24-2016, 06:09 PM

Quote:

Originally Posted by V8Killer

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

RumbleFish · 04-24-2016, 06:13 PM

Quote:

Originally Posted by FPenvy

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

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

RumbleFish · 04-24-2016, 06:16 PM

Quote:

Originally Posted by V8Killer

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

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

FPenvy · 04-25-2016, 07:50 AM

Quote:

Originally Posted by V8Killer

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

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

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

FPenvy · 04-25-2016, 07:52 AM

Quote:

Originally Posted by RumbleFish

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

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....

04-22-2016, 12:54 PM	#19 (permalink)
Nick M Enthusiast Member Join Date: Nov 2013 Location: Poughkeepsie, NY Posts: 281 Drives: 2009 370z Rep Power: 11	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 __________________ \| 2015 Nismo headlights\| 275/305 \| Z1 spacers \| Eibach Pro-kit \|k&n typhoons \| AAM S-Line catback + FI test pipes \| Stillen splitter \|

04-22-2016, 10:14 PM	#22 (permalink)
firulice Enthusiast Member Join Date: Nov 2014 Location: utah Posts: 277 Drives: 40th Rep Power: 1105	I need new tires on the front soon. Can I run one of these wider sets without switching the rears at the same time? __________________ 40th-40th edition. HFC, Nismo exhaust, Stillen intakes, GTR start, UpRev

04-24-2016, 10:53 AM	#25 (permalink)
V8Killer A True Z Fanatic Join Date: Feb 2011 Location: Newport, NC Posts: 1,127 Drives: It Hard Till It Pops Rep Power: 16	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. __________________ "Punch" Too much to list and a baby shot of nitrous....

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04-22-2016, 01:34 PM	#21 (permalink)
cjwsrt6 Enthusiast Member Join Date: Apr 2014 Location: Alabama Posts: 452 Drives: 2005 crossfire Srt6 Rep Power: 10	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