20" wheels are only for looks - change my mind - Page 3

Norm Peterson · 08-11-2021, 05:51 PM

Quote:

Originally Posted by HCI2000SS

You're right, my bad on the MM measurement for sidewall. Yes I have 245/50/18 winters and OEM 245/40/20. I would've thought the thicker sidewall would create a better ride, but it definitely does not in my case

Normally, it does. But runflat needs have overridden at least part of that general assumption.

Norm

HCI2000SS · 08-11-2021, 05:57 PM

Quote:

Originally Posted by Norm Peterson

Normally, it does. But runflat needs have overridden at least part of that general assumption.

Norm

I have to wonder (since both are runflats) if it simply comes down to tire design, construction, etc...like I was mentioning before.

Seniorrs · 08-12-2021, 07:50 AM

They say to go no more tan 3% from factory tire height. Factory is 27.7"

Norm Peterson · 08-12-2021, 08:39 AM

Quote:

Originally Posted by HCI2000SS

I have to wonder (since both are runflats) if it simply comes down to tire design, construction, etc...like I was mentioning before.

Profile is actually an element of tire design, so yes.

Norm

Norm Peterson · 08-12-2021, 08:43 AM

Quote:

Originally Posted by Seniorrs

They say to go no more tan 3% from factory tire height. Factory is 27.7"

3% is more about differences between front and rear tire heights (revolutions per mile, actually). You want to keep any front to rear differences in revs/mile within 3% of OE for your car. IOW, avoid big changes in the amount of any tire "stagger" that your car came with, or add much stagger to a car that came "square".

Norm

arpad_m · 08-12-2021, 11:42 AM

Quote:

Originally Posted by Norm Peterson

3% is more about differences between front and rear tire heights (revolutions per mile, actually). You want to keep any front to rear differences in revs/mile within 3% of OE for your car. IOW, avoid big changes in the amount of any tire "stagger" that your car came with, or add much stagger to a car that came "square".

Norm

Exactly, it's about front to rear difference and not absolute height to keep Stabilitrak and ABS happy.

On the other hand, large changes to the latter can mess up the speedo to an extent best not ignored, so one may want to at least adjust the tune in that case.

Seniorrs · 08-12-2021, 12:09 PM

Good info, thanks

ajsandiego · 08-12-2021, 03:59 PM

Quote:

Originally Posted by S.Macias

I'm running a 20"x9.5" on 275/35R20. Square setup. I have the V6 like you. The wider tires give it a completely different feel. Better planted, able to turn more aggressively with confidence, and just look better overall. Handles fine in that California rain we have out here too (when we have it..)

Appreciate your input.

A few things here:
1) Beautiful car
2) squared up with spacers?

3) offset on your wheels?

S.Macias · 08-12-2021, 07:13 PM

Quote:

Originally Posted by ajsandiego

Appreciate your input.

A few things here:
1) Beautiful car
2) squared up with spacers?

3) offset on your wheels?

Thank you. No spacers. Only the front right rubs when making a hard left turn at speed. Offset is 40mm

Silent_H_ · 08-12-2021, 08:19 PM

While I love the look of the 20" wheels, I think 19 would be the sweet spot as a balance between style and ride/performance.

As for the Brembo brakes, the SS front Brembos definitely fit inside the 18" rims. They aren't very huge. Not sure about the SS 1LE brakes or any flavor of ZL1 brakes though.

Vaska · 08-12-2021, 09:36 PM

Any 6th generation wheel, 18" or otherwise, will fit on the 1LE or ZL1 with 6-piston Brembos.

MrRuss · 08-13-2021, 09:39 AM

Here is a good calculator for comparing tire size:

https://tiresize.com/calculator/

Stock SS tire size:
245-40-20
275-35-20

I upped the rears to 285-35-20 when I got my first replacements. I did not like that the rear overall height was slightly less than the front. It looked off to me. With the 285 on the back they are slightly taller than the front. No issues with Stabilitrak and ABS.

jamala00 · 08-13-2021, 09:55 AM

My '18 Tahoe came stock with GM 22" wheels. 20" would probably ride a bit better, but the 22" stock GM wheels look really nice on it.

Fraxum · 08-13-2021, 01:47 PM

And consider 19 and 18 inch setups are lighter, reduce unsprung weight, improving steering responsiveness and acceleration. Chevy went with 19s as i remember with the ZL1 1LE, the ultimate track Camaro.

Physics.

08-13-2021, 09:39 AM	#40
MrRuss Drives: 2016 Camaro 2SS Join Date: Mar 2018 Location: Chandler, AZ Posts: 208	Here is a good calculator for comparing tire size: https://tiresize.com/calculator/ Stock SS tire size: 245-40-20 275-35-20 I upped the rears to 285-35-20 when I got my first replacements. I did not like that the rear overall height was slightly less than the front. It looked off to me. With the 285 on the back they are slightly taller than the front. No issues with Stabilitrak and ABS. __________________ Mr Russ Tim "the tool man" Taylor is my hero My Garage: '16 Chevrolet Camaro 2SS, Summit White, Adrenaline Red -- Rotofab CAI, Soler TB, 1 7/8 coated LT's, Full 3" mids, 3" Stainless Works NPP mufflers, Flex Fuel, E85/91 tuned '20 Honda Oddysey Elite 25th Anniversary Edition --wifes car, she said "No more SUV's" after the 2 CX-9's totaled

08-13-2021, 01:47 PM	#42
Fraxum Drives: a M6 LT1 ordered From Becky!!! Join Date: Jan 2010 Location: NJ Posts: 7,520	And consider 19 and 18 inch setups are lighter, reduce unsprung weight, improving steering responsiveness and acceleration. Chevy went with 19s as i remember with the ZL1 1LE, the ultimate track Camaro. Physics. __________________ "Democracy Dies in Darkness" My LT1 Keeper ..... ..... My Car Blog CarPlayList, a free App to build USB and Android Music drives.

08-12-2021, 07:50 AM	#31
Seniorrs Drives: 21 Camaro RS manual v6.Tyota Tacoma Join Date: Feb 2021 Location: Georgia Posts: 157	They say to go no more tan 3% from factory tire height. Factory is 27.7"

08-12-2021, 12:09 PM	#35
Seniorrs Drives: 21 Camaro RS manual v6.Tyota Tacoma Join Date: Feb 2021 Location: Georgia Posts: 157	Good info, thanks

08-12-2021, 08:19 PM	#38
Silent_H_ Drives: '21 V6 1LE Join Date: Jul 2020 Location: NE Posts: 267	While I love the look of the 20" wheels, I think 19 would be the sweet spot as a balance between style and ride/performance. As for the Brembo brakes, the SS front Brembos definitely fit inside the 18" rims. They aren't very huge. Not sure about the SS 1LE brakes or any flavor of ZL1 brakes though.

08-12-2021, 09:36 PM	#39
Vaska Drives: On Hiatus Join Date: Apr 2020 Location: Sask Posts: 320	Any 6th generation wheel, 18" or otherwise, will fit on the 1LE or ZL1 with 6-piston Brembos.

08-13-2021, 09:55 AM	#41
jamala00 Drives: 2016 Camaro 2SS Hyper Blue Metallic Join Date: May 2020 Location: WI Posts: 2,623	My '18 Tahoe came stock with GM 22" wheels. 20" would probably ride a bit better, but the 22" stock GM wheels look really nice on it.

User Name		Remember Me?
Password