Square Wheel/Tire Set-up on ZL1

[2013ZL1FUN]

Who out there is running this set up on their car? Advantages/disadvantages?
Are you using 11 in wheels all the way around or 10.5? Same size tires all the way around? Do tell.

[JusticePete]

The reason they run a square setup on the Z/28 is balance. The car handles better. So will a ZL1. Generally I have 11 wide front and 11.5 rears made for my clients.

[2013ZL1FUN]

I thought maybe handling would be better with wheels and tires all the same size. Also they could be rotated. So how is 11 in wide fronts and 11.5 in rears ( on 20 in wheels) square? I thought both tires and rims would need to be exact same size all the way around, like i ran on my 67 Camaro?

[clarkkent]

Originally Posted by 2013ZL1FUN

I thought maybe handling would be better with wheels and tires all the same size. Also they could be rotated. So how is 11 in wide fronts and 11.5 in rears ( on 20 in wheels) square? I thought both tires and rims would need to be exact same size all the way around, like i ran on my 67 Camaro?

I'm assuming He uses the same width tire with different wheel sizes. This gives different stretch on the tires, however the contact patch while neutral is the same. This changes the dynamics of the tires in cornering, which is what he's looking for I believe.

This is the setup the 1LE/Z28 have. Wheel widths are different front/rear but tire sizes are the same all 4 corners.

He is referring to a square setup of "tires", not "wheels+tires". So obviously you couldn't rotate them

[ZMEnow]

Originally Posted by 2013ZL1FUN

Who out there is running this set up on their car? Advantages/disadvantages?
Are you using 11 in wheels all the way around or 10.5? Same size tires all the way around? Do tell.

Been running square since 3500 miles or 2 years ago on replicas 285/35/20, love it. The original rims and Goodyears remained stored.

[JusticePete]

Originally Posted by 2013ZL1FUN

I thought maybe handling would be better with wheels and tires all the same size. Also they could be rotated. So how is 11 in wide fronts and 11.5 in rears ( on 20 in wheels) square? I thought both tires and rims would need to be exact same size all the way around, like i ran on my 67 Camaro?

Can't be rotated because the offsets front to rear are different. Some try to do that, but then you need to use a spacer and get longer lugs.

[MTCobra]

I run square on 11" rims with the same offset F and R. I can't answer your question though because I wasn't able to run any tracks I had ran previously with the stock wheels/tires before I moved and got the square setup. I do run a very small spacer in the front mostly to be able to run more camber...and I have camber plates...LOL.


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[E. Bryant]

I run a square-ish setup - Z/28 wheels with 305s at all for corners. It does a great job of reducing understeer and makes it easier to rotate the car using minor throttle and brake inputs, but I wouldn't recommend it to track noobies - what is "neutral" at lower speeds can become quite a handful at higher speeds. There is significantly less margin for error with this setup.

[JusticePete]

Originally Posted by E. Bryant

I run a square-ish setup - Z/28 wheels with 305s at all for corners. It does a great job of reducing understeer and makes it easier to rotate the car using minor throttle and brake inputs, but I wouldn't recommend it to track noobies - what is "neutral" at lower speeds can become quite a handful at higher speeds. There is significantly less margin for error with this setup.

Your Camaro should be rock solid with 305s. What are your alignment specs?