03-22-2020, 08:08 PM | #1 |
Drives: 2018 ZL1 1LE Join Date: Jan 2020
Location: San Diego
Posts: 26
|
Supercar 3 wider than Supercar 3R?
So I just received some Supercar 3‘s in ZLE sizes and stacked them up next to a set of ZLE wheels I have with 3R’s on them. Both stacks are 2x325/30/19 and 2x305/30/19.
Are the supercar 3’s wider then the 3R? Once I mount them and use them will they narrow to match? I guess I will find out once I get them mounted up and put some miles on them. |
03-22-2020, 10:02 PM | #2 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
|
wow!
__________________
'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
03-23-2020, 09:33 AM | #3 | |
Drives: SS 1LE Join Date: Oct 2017
Location: Miami
Posts: 321
|
Quote:
|
|
03-23-2020, 10:48 AM | #4 |
Drives: 2017 Silverado/2017 ZL1 Join Date: Aug 2019
Location: Jax/Palatka FL
Posts: 1,090
|
eh just throw them on. Just more rubber to keep you planted now.
__________________
|
03-23-2020, 11:54 AM | #5 |
Drives: 2013 C6Z06 Join Date: Nov 2016
Location: PA
Posts: 1,577
|
I would say throw a tape measure across both sizes of the 3s on the inside to get a bead to bead measurement. If the 305s are more than 11" and the 325s are more than 12", then you know the wheels will be pulling in on them and make them more narrow. That seems like a large difference though.
|
03-23-2020, 11:58 AM | #6 |
Who Needs to KNOW?
Drives: 18 ZLE Join Date: May 2018
Location: Left Side of the Moon
Posts: 1,770
|
Both mounted on same size wheels ?
__________________
ing for grip.
Are you in the NY/NJ/PA/CT region? Join us for autox fun at MetLife Stadium. HUGE lots, tons of runs. http://www.motorsportsne.com/ |
03-23-2020, 12:28 PM | #7 |
Drives: 1LEs Join Date: May 2009
Location: DFW - Texas
Posts: 1,319
|
I have a new set of both G3 and G3R's unmounted I just measured individually and all together. The G3's unmounted are 9.5mm total wider Section Width than the G3R's unmounted (305 & 325/30/19). Anyways...the G3’s are a fat set of tires, and the G3R's are not exactly skinny ones for their given sizes. That's the top of the stacks of four new tires each.
|
03-23-2020, 12:38 PM | #8 |
Drives: '20 ZL1 M6 Join Date: Apr 2017
Location: FT. Lauderdale, FL
Posts: 717
|
According to Tire Rack, the rears are exactly the same for both the 3 and 3R. 13.0 section width, 12.3 tread width, and 26.3 diameter.
The fronts are slightly different. For the 3's, 12.3 section width, 11.6 tread width, and 26.3 diameter. The 3R is the same other than tread width which is 11.3.
__________________
Mal
Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R |
03-23-2020, 12:42 PM | #9 | |
Drives: 1LEs Join Date: May 2009
Location: DFW - Texas
Posts: 1,319
|
Quote:
|
|
03-23-2020, 12:46 PM | #10 | |
Drives: '20 ZL1 M6 Join Date: Apr 2017
Location: FT. Lauderdale, FL
Posts: 717
|
Quote:
It would seem that unmounted would be meaningless. Everything about tires and suspension should be based on operating conditions, no?
__________________
Mal
Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R |
|
03-23-2020, 01:04 PM | #11 | |
Drives: 1LEs Join Date: May 2009
Location: DFW - Texas
Posts: 1,319
|
Quote:
I just wanted to compare unmounted to unmounted where the original poster had mounted G3R's vs. unmounted G3's. |
|
03-23-2020, 01:22 PM | #12 | |
Drives: '20 ZL1 M6 Join Date: Apr 2017
Location: FT. Lauderdale, FL
Posts: 717
|
Quote:
Interesting that the front tread widths are different, unless a typo on their site.
__________________
Mal
Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R |
|
03-23-2020, 01:30 PM | #13 |
Drives: SS 1LE, 89 TTA, 91 GTA, 91 Formula Join Date: Jul 2019
Location: NW IN
Posts: 600
|
Welcome to the world of tires. Diameters and widths do not match between manufacturers and your lucky if they do within the same line.
|
03-23-2020, 09:38 PM | #14 |
Drives: 2017 SS 1LE, 2016 1SS (previous) Join Date: Apr 2016
Location: Metro-Detroit
Posts: 1,863
|
Unmounted vs mounted, yeah a tire will likely get narrow in terms of section width, but tread width will be tread width. It's not like material all of a sudden disappears.
I mean, you also need to consider an unloaded vs loaded mounted tire too. If the 305 SC3 is wider than the SC3R, you may not get that extra tread to the main contact patch, but it will be there rolled more onto the sidewall, which can mean something depending on your alignment settings and suspension. So instead of rolling onto the sidewall or end of the tread, you roll onto more tread or are less at the end of the tread. |
|
|
Post Reply
|
Thread Tools | |
|
|