question about the 3% rule

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Dec 16, 2009 | 09:37 PM

lemmiwinkz

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From: FOCO

question about the 3% rule

i have the vdc in my z and i found that when getting new tires you can need to keep the rear tire larger than 3% of the front tire but still larger than the front tire. however i cant seem to find any info on how low you can go. i was thinking about a 265/35 r18 front and a 285/35 rear which would be about 2.17% which is lower than 3 but is it to low??

Last edited by lemmiwinkz; Dec 17, 2009 at 04:50 AM.

Dec 16, 2009 | 10:26 PM

davidv

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Nissan does not publish VDC operating parameters. And if they do it is so complicated that I could not figure it out. That said I would be cautious with this set-up.

Dec 16, 2009 | 10:57 PM

terrasmak

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From: Sin City

Quote:

Originally Posted by lemmiwinkz

i have the vdc in my z and i found that when getting new tires you can need to keep the rear tire smaller than 3% of the front tire but still larger than the front tire. however i cant seem to find any info on how low you can go. i was thinking about a 265/35 r18 front and a 285/35 rear which would be about 2.17% which is lower than 3 but is it to low??

Just fine, the % you have to worry about is the difference between front to rear tire height.

Dec 17, 2009 | 03:18 AM

DavesZ#3

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From: Louisiana

Quote:

Originally Posted by lemmiwinkz

i have the vdc in my z and i found that when getting new tires you can need to keep the rear tire larger than 3% of the front tire but still larger than the front tire. however i cant seem to find any info on how low you can go. i was thinking about a 265/35 r18 front and a 285/35 rear which would be about 2.17% which is lower than 3 but is it to low??

Fixed for ya.

Dec 17, 2009 | 04:51 AM

lemmiwinkz

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From: FOCO

^thanks for the fix

Dec 17, 2009 | 05:40 AM

Brrcats

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From: Westerville, OH

Quote:

Originally Posted by lemmiwinkz

you'll be fine with a 2.17% difference, i think you can actually run a square set up without vdc issues

Dec 17, 2009 | 07:31 AM

GeauxLadyZ

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From: Htown

As long as you keep within 3% front/rear height difference, your good to go.

3% rule is the operating parameters of the VDC, David.

question about the 3% rule

question about the 3% rule

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