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[Z06] 305 vs 315

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Old Nov 15, 2010 | 08:54 PM
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Default 305 vs 315

Anyone running 305's or 315's out back. I am thinking about going larger than the stock size on that wheel. Curious to see how it looks on the rim.

Any pictures?
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Old Nov 16, 2010 | 09:20 AM
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Default tire size

A lot of people are running 305,315, and 335. To retain a stock look I would't go past 305. Now we are only talking MM here but thats just my 2cents. The 315 and 335 start sticking out to far in my opinion but work just fine.
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Old Nov 16, 2010 | 10:03 AM
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Originally Posted by titaniumasm
A lot of people are running 305,315, and 335. To retain a stock look I would't go past 305. Now we are only talking MM here but thats just my 2cents. The 315 and 335 start sticking out to far in my opinion but work just fine.
315 doesn't stick out.
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Old Nov 16, 2010 | 11:39 AM
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Originally Posted by swollix
315 doesn't stick out.
Neither do 335's.. hehe
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Old Nov 16, 2010 | 03:49 PM
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So the correct sizes would be either a 305/35 or a 315/30 correct? I want to order some tires soon and am very confused lol
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Old Nov 16, 2010 | 04:21 PM
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I have 315/30's on the rear and they look good. I don't have any pics but I like the tires.
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Old Nov 16, 2010 | 06:22 PM
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^^^ Same here, 315/30/18's and I love em. They fit like a glove!
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Old Nov 16, 2010 | 09:06 PM
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Originally Posted by swollix
315 doesn't stick out.
I can't resist, (good looking setup), but I dont see a 315 in the 555 lineup (Nitto's site). What diameter and aspect ratio are those? From the angles, the almost look like an 18/35. Side views?? Thanks!
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Old Nov 16, 2010 | 09:22 PM
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I was running 315s a while back and they stuck out a few mm's looking down from atop the rear quarter panel. I am running 305s now and they do not stick out, plus they are a better fit for stock 10.5 wheels. I would think you will have to add more negative camber to bring the top of the wheel in with 315s. I also highly doubt you will see any gain in traction with 315s on stock wheels.
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Old Nov 16, 2010 | 10:18 PM
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Fit seems to be as varied as the tire manufacturers choose to make it. Invo 325/30/19's seem to run small and fit, though tight, almost no other 325 will though. Nitto / Toyo "R" compound 305's run big, more like std. compound 315's would measure. Diameter seems a little more consistent with most manufacturers, but the Yokohama 305/30/19 shows 26.1 inches dia, while most others are in the 26.3 - 26.4 range. Stock 295/35/18 is about 26.1.
From inner liner to the outer lip, (on my car), measures 12.5 inches so it would seem anything more than 12.25 section width has to stick out or rub. But it doesn't seem like you can completely trust the mfr.s published numbers, other than - yes it will actually fit an 18" or 19" wheel. Me, I'm pretty well set on going with R888's in 275/305.

Last edited by RIKKITIK; Nov 17, 2010 at 12:00 AM.
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Old Nov 17, 2010 | 09:10 AM
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305/30

Measure each tire. Not all tires are the same width even though they all say the same on the sidewall

335s can vary as much as an 1" difference between brands

18x305/30 - - - - - - - - - - - - 18x275/35

18x335/30 - - - - - - - - - - - - 18x335/30

Hoosier 14" wide - - - -- - -- -- Mich PS 13.1" wide both 335s

Last edited by AU N EGL; Nov 17, 2010 at 09:13 AM.
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Old Nov 17, 2010 | 09:52 AM
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Measure each tire. Not all tires are the same width even though they all say the same on the sidewall
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Old Dec 12, 2010 | 08:56 PM
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Default Wing???????????

Originally Posted by RC45
Neither do 335's.. hehe
Tell me about your rear wing. Who produces, how did you mount and how is the results. Thanks
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Old Dec 12, 2010 | 09:32 PM
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Originally Posted by allen short
Tell me about your rear wing. Who produces, how did you mount and how is the results. Thanks
Its clearly made by APR, which is a big name product in the import scene. Normally those wings are found on evo, sti's and other etc imports. Never seen one on a vette. I know if it was my vette i wouldnt put that on. Again, just my opinion. To each is their own.
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Old Dec 13, 2010 | 07:50 AM
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Originally Posted by Torch Z06
Its clearly made by APR, which is a big name product in the import scene. Normally those wings are found on evo, sti's and other etc imports. Never seen one on a vette. I know if it was my vette i wouldnt put that on. Again, just my opinion. To each is their own.
Notice the red tow hook? chances are this is a track car, not a street use car.



and 305s dont stick out in front either. but ya kinder need -2* camber up front too.

Last edited by AU N EGL; Dec 13, 2010 at 07:54 AM.
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Old Dec 13, 2010 | 11:49 AM
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i run 305 nitto invo's on my 04 z with a 20" wheel-they work great for the street and are very quiet..



i ran nitto 555r2's on my 01 z and they were wider in the 305's because of the rim dia on the stock z06 wheel..
they worked great also..i did not have them on yet in this pic...
since i live in kaliforneia..its warm a lot..i love the nitto's 555r2's ran great , quiet , cheap, and they hook up if you go to 305 size on rear...i ran 285's up front.no issues with anything other than a lot more dust /road dirt on side of car..i would also recommend some kind of splash guards for the Z if you drive it on the street alot, after 25k miles with the wide nitto's my silver Z was pretty sandblasted in many lower side areas of the car.

Last edited by bud miller; Dec 13, 2010 at 12:07 PM.
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Old Dec 13, 2010 | 09:13 PM
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imo,the 315/30 doesn't look right.with a 275/40/17 front,the sidewall height is 110mm.the 315/30 sidewall is only 94.5mm.it makes the front tire look bigger than the rear.if you go with a 305/35 the sidewall will be 110.25mm.it will look much better with the front tire.
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To 305 vs 315

Old Dec 14, 2010 | 07:25 AM
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305/35 is too tall. 305/30

so change the front too.
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Old Dec 15, 2010 | 11:36 AM
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Default Tire sizes, 2003-Z06

I am running 275-35 2R18 in front and 315-35 R18 on the rear. The car sits great and handles great.
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Old Dec 15, 2010 | 12:03 PM
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Originally Posted by allen short
I am running 275-35 2R18 in front and 315-35 R18 on the rear. The car sits great and handles great.
Very good combo
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