[Shock_4_Banger]

Hey everybody!!!!
I'm new to the page and I recently took my car to our 1st, of many to come, track days.

I would like to make some set-up changes to provide better handling and grip.
My car is the 1LT 1LE (2.0 Turbo) and currently has a staggered set-up as you all know consisting of 20X8.5 w 245/45R20 in the front and 20X9.5 w 275/35R20 in the rear.

I want to put the SS 1LE fronts (20X10 w 285/30R20) on all 4 corners.

From everything I can research on my own, it seems like it should work.
Has anyone else tried this or know anything?

[Matos1LE]

Originally Posted by Shock_4_Banger

Hey everybody!!!!
I'm new to the page and I recently took my car to our 1st, of many to come, track days.

I would like to make some set-up changes to provide better handling and grip.
My car is the 1LT 1LE (2.0 Turbo) and currently has a staggered set-up as you all know consisting of 20X8.5 w 245/45R20 in the front and 20X9.5 w 275/35R20 in the rear.

I want to put the SS 1LE fronts (20X10 w 285/30R20) on all 4 corners.

From everything I can research on my own, it seems like it should work.
Has anyone else tried this or know anything?

I don't see why that wouldn't work, but in your place I would be tempted to use ZL1 1LE wheels for extra width and the smaller diameter.

[Shock_4_Banger]

I thought of that also, but I found a great deal on the SS 1LE.
I compared the measurements from the 1LT and SS and I still gain 1.6 inches per wheel up front and 0.4 gain of width in the rear.

And with the lighter 4Cyl set-up, it should be very noticeable.

I'll try to post some before and after pics and stats. Thanks!!!!

[Scargoes]

Running 20x10 et20 wheels on the rear will give you 13mm more clearance on the inside and push the tire 25mm outwards from what came on the car stock.

[pbsinternet1le]

19 inch square setup from apex would be a better choice imo.

[Shock_4_Banger]

That will be fine clearance wise then.
Thanks.

[Shock_4_Banger]

I agree, so I looked into pricing.

20 X 10 : bout $250ish a wheel.
19 X 11 : bout $400ish a wheel on the cheap end.
And tire choices are slimmer and twice the price.

I'm just looking for a little better handling on track days. I'm not racing for money, so I am not going to get too crazy with the set-up.

[Matos1LE]

Originally Posted by Shock_4_Banger

I agree, so I looked into pricing.

20 X 10 : bout $250ish a wheel.
19 X 11 : bout $400ish a wheel on the cheap end.
And tire choices are slimmer and twice the price.

I'm just looking for a little better handling on track days. I'm not racing for money, so I am not going to get too crazy with the set-up.

I like it, knowing your budget and sticking to it is one of the hardest things to do with cars. Much respect for only doing exactly what you need.

[EWard]

This is a good read and my future plans when I decide to go to cam-c in autocross. https://www.camaro6.com/forums/showthread.php?t=529442

Fyi if you want to do track sprint/attack to stay in Sport 3 you can only run 285's (which would work good on the 10.5 wheels). My setup on DS autocross legal 18x8.5 running pinched 265/40/18 goodyear sc3 held up good at my first time doing time sprint at VIR Patriot course.

https://www.brr-scca.org/ scroll down to track sprint #1 results raw Eric Ward. I run a base model 1ls 4T with a hellwig front bar, track alignment, Castrol SRF fluid with G-Loc R10 F & R8 R with the small brake calipers and rotors and the cheap TR C4 wheels from tirerack.

[Msquared]

Originally Posted by Scargoes

Running 20x10 et20 wheels on the rear will give you 13mm more clearance on the inside and push the tire 25mm outwards from what came on the car stock.

This is exactly correct. But I'm not sure that means you'll be fine on rear outside clearance. We all know what "backspacing" means, and I call the opposite of that (i.e. the distance from hub face to outside edge of the wheel) "frontspacing." Well, the front SS 1LE wheel (20x10 et20) actually has 0.4" more frontspacing than the rear SS 1LE wheel (20x11 et43). That is, even though it's 1" narrower, it sticks out 0.4" further to the outside. And the stock rear wheels/tires on an SS 1LE are pretty close to the edge of the fenders, aren't they? Assuming your 2.0T has the same fenders as the SS, then you're going to get a little of "poke" with those SS 1LE front wheels. The problem is that those 10" fronts don't have much offset. You'd be better off with the rear SS 1LE 11" wheels if you can get the same good deal on them. IOW, why not just go with a complete set of staggered SS 1LE wheels?

[EWard]

Originally Posted by Msquared

This is exactly correct. But I'm not sure that means you'll be fine on rear outside clearance. We all know what "backspacing" means, and I call the opposite of that (i.e. the distance from hub face to outside edge of the wheel) "frontspacing." Well, the front SS 1LE wheel (20x10 et20) actually has 0.4" more frontspacing than the rear SS 1LE wheel (20x11 et43). That is, even though it's 1" narrower, it sticks out 0.4" further to the outside. And the stock rear wheels/tires on an SS 1LE are pretty close to the edge of the fenders, aren't they? Assuming your 2.0T has the same fenders as the SS, then you're going to get a little of "poke" with those SS 1LE front wheels. The problem is that those 10" fronts don't have much offset. You'd be better off with the rear SS 1LE 11" wheels if you can get the same good deal on them. IOW, why not just go with a complete set of staggered SS 1LE wheels?

This is what you have to decide. Does poke bother you on a set of dedicated track wheels with more offset and grip vs a cleaner look when you track your car. The poke wheels will cause more road rash on your new car, but any track tire will cause road rash regardless.

If you are going to track or autocross your car more than a few times a year purchase a square set up what ever you decided to do. Tire rotation is your tires friend. I purchased may car as a hobbie/toy to have fun with, so my perceptive may be on the extreme side.

[Scargoes]

Originally Posted by Msquared

This is exactly correct. But I'm not sure that means you'll be fine on rear outside clearance. We all know what "backspacing" means, and I call the opposite of that (i.e. the distance from hub face to outside edge of the wheel) "frontspacing." Well, the front SS 1LE wheel (20x10 et20) actually has 0.4" more frontspacing than the rear SS 1LE wheel (20x11 et43). That is, even though it's 1" narrower, it sticks out 0.4" further to the outside. And the stock rear wheels/tires on an SS 1LE are pretty close to the edge of the fenders, aren't they? Assuming your 2.0T has the same fenders as the SS, then you're going to get a little of "poke" with those SS 1LE front wheels. The problem is that those 10" fronts don't have much offset. You'd be better off with the rear SS 1LE 11" wheels if you can get the same good deal on them. IOW, why not just go with a complete set of staggered SS 1LE wheels?

To compare with the stock set up in the rear- a 20x10 et20 on the rear will put the outside of the wheel 25.3mm further out from a 20x9.5 et39.

A 20x10 et20 will be 10.3mm further out than a 20x11 et43
A 19x10.5 et22 will be 14.7mm further out than a 20x11 et43
A 20x10 et20 will be 4.4mm closer in than a 19x10.5 et22

Hub face(wheel mounting surface) to outside of wheel measurement
20x10 et20 - 107mm
20x11 et43 - 96.7mm
20x9.5 et39 - 81.7mm
19x10.5 et22 - 111.4mm

[Msquared]

Just to coordinate the info in our posts for Shock's use:

Originally Posted by Scargoes

To compare with the stock set up in the rear- a 20x10 et20 on the rear will put the outside of the wheel 25.3mm further out from a 20x9.5 et39.

Yep, one full inch further outside.

A 20x10 et20 will be 10.3mm further out than a 20x11 et43

Exactly. This is the 0.4" extra poke that I referred to.

Hub face(wheel mounting surface) to outside of wheel measurement
20x10 et20 - 107mm
20x11 et43 - 96.7mm
20x9.5 et39 - 81.7mm
19x10.5 et22 - 111.4mm

This is the "frontspacing" measurement I referred to.

I think the OP should just get a full set of SS 1LE wheels: two 20x10 et20 and two 20x11 et43. Those should fit fine and if he can get a good deal on a set then so much the better. There are also a couple of sets for sale on our classifieds.

[Shock_4_Banger]

Thanks for all the great feedback everyone! Since these are going to be dedicated track wheels and tires, I don't mind a little "poke" in return for more grip and faster corner entry speeds.
I my wheels are here and the tires will be in tomorrow.
Weather dependent, I will mount and post some pics this weekend.

Hope to see some of you at a track soon!