acceptable diameter difference? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

steakmaker · 05-04-2019, 07:39 AM

A 245/45/20 tire is 28.68 & a 305/35/20 tire is 28.41. Can I run the 305's without problems?

rudiitee96 · 05-04-2019, 07:45 AM

you're fine.

QUICRNU · 05-04-2019, 08:50 AM

Yes, 100% fine. I have swapped a bigger difference than that on my 2010 Camaro.

b4wheeler · 05-04-2019, 10:29 AM

That is overall height. The difference there is .27 inches, about 1/4 inch.
Now divide by 2.
0.27/2=0.135
0.135 is the actual height difference that the car sees.

Add a pound or two of air... And it will be he same, but car will never notice a hair over 1/8 inch difference in height.

QUICRNU · 05-04-2019, 11:43 AM

I think the concern generally stems from overal diameter but more specifically rolling circumference as the ABS sensors do not like large differences, side effects of a large diff. Fixed in the software include improper MPH and automatic shift points etc.

None of which you need to worry about OP... People have issues sometines putting 27 or 26" tires out back, not 28.41.

I do commend you for your attention to the details and asking the question though!

SEND IT!!

steakmaker · 05-06-2019, 12:03 PM

Thank You everyone that responded to my question!

"Steakmaker"

klatterblast · 05-06-2019, 03:55 PM

I have Mickey Thompson’s around 27.5” and have no troubles.

05-04-2019, 07:39 AM	#1
steakmaker Drives: '10 Camaro SS,Jeep Commander Hemi Join Date: Mar 2010 Location: Cicero,NY Posts: 567	acceptable diameter difference? A 245/45/20 tire is 28.68 & a 305/35/20 tire is 28.41. Can I run the 305's without problems?

05-04-2019, 07:45 AM	#2
rudiitee96 Dolfie96 Drives: 2014 Camaro 2SS Erebos Join Date: Aug 2017 Location: Westchester, NY Posts: 219	you're fine. __________________ I'm just here to learn things and spend my money

05-04-2019, 08:50 AM	#3
QUICRNU Drives: Z06 wannabe Join Date: Feb 2015 Location: Daytona Beach, FL Posts: 1,200	Yes, 100% fine. I have swapped a bigger difference than that on my 2010 Camaro. __________________ Apex Focused

05-04-2019, 10:29 AM	#4
b4wheeler Drives: 2011 Camaro 2SS Vert Join Date: Oct 2015 Location: Cordova, Md Posts: 590 View My Garage	That is overall height. The difference there is .27 inches, about 1/4 inch. Now divide by 2. 0.27/2=0.135 0.135 is the actual height difference that the car sees. Add a pound or two of air... And it will be he same, but car will never notice a hair over 1/8 inch difference in height. __________________ 2011 2SS/RS Convertible, Victory Red, Roto-Fab CAI, Stainless Power 1 7/8 headers, No Cats, Straight piped, Bo White TB, ZL1 CONVERSION, CDC Roll bar and some powder coating and dipping.

05-04-2019, 11:43 AM	#5
QUICRNU Drives: Z06 wannabe Join Date: Feb 2015 Location: Daytona Beach, FL Posts: 1,200	I think the concern generally stems from overal diameter but more specifically rolling circumference as the ABS sensors do not like large differences, side effects of a large diff. Fixed in the software include improper MPH and automatic shift points etc. None of which you need to worry about OP... People have issues sometines putting 27 or 26" tires out back, not 28.41. I do commend you for your attention to the details and asking the question though! SEND IT!! __________________ Apex Focused

05-06-2019, 12:03 PM	#6
steakmaker Drives: '10 Camaro SS,Jeep Commander Hemi Join Date: Mar 2010 Location: Cicero,NY Posts: 567	Thank You everyone that responded to my question! "Steakmaker"

05-06-2019, 03:55 PM	#7
klatterblast Drives: 2010 camaro 2ssrs blk. Join Date: Oct 2009 Location: walker la. Posts: 1,732 View My Garage	I have Mickey Thompson’s around 27.5” and have no troubles. __________________ 2010 Hennessey HPE650 2SSRS Blk/Blk Magnuson TVS2300,ported heads,cam,Hotchkis suspension. Weld 17”s, Mickey Thompson’s.