[Z06] Running 18" wheels all around?

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Feb 12, 2008 | 08:28 AM

gregkono

Thread Starter

Instructor

Joined: Oct 2005

Posts: 164

Likes: 16

From: Lawton Mi

Running 18" wheels all around?

Would like to run 18"x10.5" (295x30x18)at the road race tracks (Hoosiers/sport cups) on all four corners so I can rotate and get the most out of the tires at DE events. I'd also like to run my 17's together (all 4 corners) for rain tires. Is anybody doing this? Suggestions on track day rain tires? Currently run Firehawks in the wet. Thanks,Greg.

Feb 12, 2008 | 08:40 AM

snitz

Burning Brakes

Joined: Mar 2006

Posts: 829

Likes: 2

From: Arlington Heights Illinois

18"s all around Pilot Sport cups. 345's (L5 qtr pancels) in rears, 295's in front. CCW Corsairs.

Feb 12, 2008 | 12:12 PM

Wah

Melting Slicks

Joined: Apr 2003

Posts: 2,989

Likes: 10

From: Columbus OH

315/30/18 Pirelli PZero Corsa on all 4 here.

Feb 12, 2008 | 12:40 PM

AU N EGL

Team Owner

Joined: Sep 2003

Posts: 43,084

Likes: 33

From: Raleigh / Rolesville NC

Not a problem, go 4 it

Feb 12, 2008 | 03:36 PM

ov666

Advanced

Joined: Aug 2004

Posts: 99

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I thought someone on hear said the front tires need to be an inch shorter the rear or would mess the active handling up. I want to run 18 all the way around too ten and half wide in front twelves in the back.

Feb 12, 2008 | 05:44 PM

BitViper

Melting Slicks

Joined: Jan 2007

Posts: 3,107

Likes: 7

From: Sandy Ego Ca.

Quote:

Originally Posted by ov666

I think what it was that there c/n be MORE than 1" diffrence in the overall circumfrence.. people run 18 19 combos all day w/o problems teh diff is made up for in the tire sidewall height

Running 18's here to 18X10 fronts wrapped with 275x35's and 18 11.5 wrapped in 295x35's in back
here's a tire calculator to play with http://www.miata.net/garage/tirecalc.html

Last edited by BitViper; Feb 12, 2008 at 06:04 PM.

Feb 12, 2008 | 05:44 PM

bobby777

Melting Slicks

Joined: Dec 2003

Posts: 2,334

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From: las vegas nv.

From what ive read/heard is as follows--rear should be 1/2-1 in taller as to not mess up the TC/AH--I have also read that running the same diameter-height in front and back is ok with many having no problems--but never shorter in rear than front--

Feb 12, 2008 | 08:59 PM

wills55

Heel & Toe

Joined: Nov 2007

Posts: 24

Likes: 0

From: miami florida

Quote:

Originally Posted by snitz

18"s all around Pilot Sport cups. 345's (L5 qtr pancels) in rears, 295's in front. CCW Corsairs.

i know its of topic, sorry. but this is the sickest c5 i have ever seen. your car is going to be my background pic for a long time. sorry for interupting, please proceed.

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Feb 13, 2008 | 06:54 AM

snitz

Burning Brakes

Joined: Mar 2006

Posts: 829

Likes: 2

From: Arlington Heights Illinois

Quote:

Originally Posted by wills55

i know its of topic, sorry. but this is the sickest c5 i have ever seen. your car is going to be my background pic for a long time. sorry for interupting, please proceed.

Thanks. It's also the background pic on my computer.