[Z06] Tire Size Option

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Dec 19, 2009 | 05:52 PM

GREENEYEMONSTER

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Tire Size Option

Will I have any traction control or active handling system issues while running 315/30/18 ; 275/40/17 Michelins PS2’s on my Z? Thank you.

Dec 19, 2009 | 08:59 PM

MTPZ06

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From: Honolulu HI

Yes...most likley that combo will cause issues. Not enough tire diameter to be compatible with the front.

Dec 19, 2009 | 09:31 PM

GREENEYEMONSTER

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I would like to stick with the PS2s and a wider tire in the rear; what is my bet option?

Dec 19, 2009 | 09:53 PM

Davinss

Racer

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From: Fort Worth Texas

I've run those sizes before with no issues. Every time when you first start driving the car uses the ABS sensor to figure out the tire diameters. It is pretty flexible...

Dec 19, 2009 | 11:02 PM

MTPZ06

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From: Honolulu HI

Quote:

Originally Posted by GREENEYEMONSTER

I would like to stick with the PS2s and a wider tire in the rear; what is my bet option?

If you insist on the 315/30 rear, I would stick with the 265/40 front. I have PS2's in stock sizes and they work great...much better all around tire than the GY F1SC's. I would have liked to go 305/35 on the rear, but they don't make that size in PS's.

Dec 20, 2009 | 05:18 AM

dieseldave56

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From: LaPine Oregon

OEM stagger.........

Quote:

Originally Posted by GREENEYEMONSTER

Will I have any traction control or active handling system issues while running 315/30/18 ; 275/40/17 Michelins PS2’s on my Z? Thank you.

Your OEM stagger is rear tires are .500" larger in diameter. This has been the forums mantra or chant for sometime now. Your stagger combination actually makes the fronts .200" larger than the rears. http://www.rims-n-tires.com/rt_specs.jsp?postId=906

Dec 22, 2009 | 09:29 PM

GREENEYEMONSTER

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I used the tire calculator, removed the rim view, and things cleared up quite a bit. I think I going to roll with 335/30/18 tire diameter of 659mm in the rear and 265/40/17 tire diameter of 644mm up front a difference of 15mm. Will I have any issues with the 335/30/18? Who ever knew that picking tires for you vette could become so time consuming. Thanks

Last edited by GREENEYEMONSTER; Dec 22, 2009 at 10:44 PM.

Dec 26, 2009 | 02:26 AM

MTPZ06

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From: Honolulu HI

You'll have a tough time getting a 335 to fit on a factory 10.5" wide rim.

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Dec 26, 2009 | 12:53 PM

QSZOH6

Instructor

Joined: May 2009

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From: Hanford CA

I run a 275/315 tire with no issues.

Dec 26, 2009 | 01:11 PM

#10

GubuZ06

Instructor

Joined: Oct 2006

Posts: 171

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From: Fairfax VA

Wouldn't 255/40/17 - 315/30/18 solve the ratio issue?

Dec 26, 2009 | 01:20 PM

#11

GubuZ06

Instructor

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From: Fairfax VA

Eagle F1 GS-D3 in 295/35/18 are on closeout at Tirerack.com for $163 a piece fyi.

Dec 26, 2009 | 07:06 PM

#12

GREENEYEMONSTER

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Thanks for the help, I think I am going to stick with stock PS2 sizes

Dec 26, 2009 | 10:28 PM

#13

03BlkZ

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From: Hewitt TX

I run 275/40/17 front and 335/30/18 rear with zero problems!

Last edited by 03BlkZ; Dec 27, 2009 at 09:37 AM. Reason: size

Dec 27, 2009 | 02:37 AM

#14

bullitt4110

Le Mans Master

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From: Mt Pleasant, TN

I have run the 275F and 315R combo in the past w/o issues, you will be fine. Its not as complicated as people make it out to be.

Dec 27, 2009 | 04:31 AM

#15

dieseldave56

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From: LaPine Oregon

Quote:

Originally Posted by bullitt4110

I have run the 275F and 315R combo in the past w/o issues, you will be fine. Its not as complicated as people make it out to be.

Will inform us of the aspect ratio are you using with both 275 and 315 tire widths? Are you encouraging the thread originator to forget about tire stagger? Or that your separate experience showed no ill affect?

Being that Greeneyemonster wants to use Michelin Pilot Sport PS2 I don't see using a 315/30 with a 265 or 275 only 40% aspect is produced. The tire stagger is important for traction, active handling and competition modes. If the tire stagger is OT , you can turn off the comp. mode to gain that 10mm.

Besides a 30% rear tire sidewall looks funny compared to the 40% on the fronts. With the Michelin stay with OEM sizes with OEM wheels.

Dec 27, 2009 | 12:11 PM

#16

bullitt4110

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From: Mt Pleasant, TN

Quote:

Originally Posted by dieseldave56

Breathe buddy, its ok. Like I said aswell as others have run that combo without issues (275/40, 315/30), the percentage of stagar isnt as big of deal as people make it out to be, I never said dont run any stager. But I even drove around for a couple thousand miles with 275/40/17 tires on all 4 corners and the ABS only freaked out once. I dont really care what he does, just simiply stating that it will work which is what he asked to start with.

Last edited by bullitt4110; Dec 27, 2009 at 12:16 PM.

Dec 27, 2009 | 04:54 PM

#17

MTPZ06

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From: Honolulu HI

Quote:

Originally Posted by GREENEYEMONSTER

Thanks for the help, I think I am going to stick with stock PS2 sizes

Trust me...I went through the same exercise as you, and I came to the same conclusion. Stock sizes are just fine in the PS2's.

Dec 27, 2009 | 11:00 PM

#18

DannyG

Burning Brakes

Joined: Jan 2007

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From: Maple Valley WA

St. Jude Donor '10

Contrary to popular belief, you don't need to maintain the stock front to rear tire diameter difference for the traction control. In fact, you can run the same diameter at all four corners with no issues.

Dec 28, 2009 | 12:05 AM

#19

Blue Blood

Melting Slicks

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From: North Dallas Forty Orange County, Ca.

St. Jude Donor '08-'09-'10-'11-'12-'13, '15,'21

But it does come into play with the ABS under heavy braking.

Dec 28, 2009 | 08:59 PM

#20

Toque

Tech Contributor

Joined: Jan 2004

Posts: 20,030

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From: Wylie TX --> Less is More, except under the hood !

I made a full write up about this below.
http://forums.corvetteforum.com/c5-g...ah-issues.html

Take a look and it will be easy for you to figure it all out.

It WILL save you $$ and headaches later.

Hope this helps
Toque

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