anyone with 275/40-20 tires all the way around?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

autobotaz · 09-22-2010, 11:32 AM

Curious if anyone has gone to 275/40-20's on all 4 wheels? I was thinking about doing this or going to 275/40-20's and 305/40 or 35-20's on the back.

Badger · 09-22-2010, 11:34 AM

you mean 275/40/20??...alot of people are running them up front with no problems.

autobotaz · 09-22-2010, 11:36 AM

Quote:

Originally Posted by Badger

you mean 275/40/20??...alot of people are running them up front with no problems.

yeah I just realized I typed it wrong.

Sir Nuke · 09-22-2010, 11:52 AM

YES, in fact there quite a few of us put the REAR stock wheels/tires all the way around, fits like a champ, no issues at all!

Berean · 09-22-2010, 01:12 PM

I'm getting ready to do this as well.

autobotaz · 09-22-2010, 01:26 PM

Quote:

Originally Posted by Sir Nuke

YES, in fact there quite a few of us put the REAR stock wheels/tires all the way around, fits like a champ, no issues at all!

cool, that is definitely the way I want to go when I reaplce my heritage wheels. I at least want to be able to rotate the tires front to back and back to front on each side.

I wonder why the fronts are 45's and the rears are 40's from the factory?

What wheels and offset are you using??

rolnslo · 09-22-2010, 01:31 PM

Quote:

Originally Posted by autobotaz

I wonder why the fronts are 45's and the rears are 40's from the factory?

Aspect ratio. That number indicates the sidewall height expressed as a percentage of the tire width. The rears are wider (275mm vs 245mm) so they went with a lower percentage (40% vs 45%) for the aspect ratio in the rear to keep the overall sidewall height consistent front to back.

245/45/20 = 28.68" tall
275/40/20 = 28.66" tall

autobotaz · 09-22-2010, 01:40 PM

Quote:

Originally Posted by rolnslo

Aspect ratio. That number indicates the sidewall height expressed as a percentage of the tire width. The rears are wider (275mm vs 245mm) so they went with a lower percentage (40% vs 45%) for the aspect ratio in the rear to keep the overall sidewall height consistent front to back.

245/45/20 = 28.68" tall
275/40/20 = 28.66" tall

Ah, thanks for explaining. So if I ran the 275/40/20 's on all 4 wheels I would need 9.5 to 10in wide wheels most likely. Can I run the same offset for all 4 wheels or do they need to be different??

rolnslo · 09-22-2010, 01:54 PM

The stock rear wheels are 9" wide. You can run 275/40/20's all the way around using 2 sets of rear stock wheels.

The stock wheel offsets can be found here. On the RS/SS wheels, there is only a 5mm offset difference between the front (35mm) and rear (40mm) wheels. The LS/LT offsets split the difference at 38mm all the way around.

stormricker · 09-25-2010, 03:37 PM

But would it be wise to run 275/40s (20") on 8 inch rims? A little bulgy?

Doc · 09-25-2010, 05:02 PM

I have 275/40 19's on 9.5" rims all the way around and it works great.

tples69 · 09-28-2010, 05:53 PM

Love my 275's all the way around also!

Berean · 09-29-2010, 06:45 PM

I now have 275/40's on 10" all the way around. Love it!

2010_5thgen · 09-29-2010, 06:52 PM

anyone running the rear wheels up front that is LOWERED?

09-22-2010, 11:32 AM	#1
autobotaz Drives: Black 2010 Camaro LS Join Date: Jul 2010 Location: ARIZONA Posts: 173	anyone with 275/40-20 tires all the way around?? Curious if anyone has gone to 275/40-20's on all 4 wheels? I was thinking about doing this or going to 275/40-20's and 305/40 or 35-20's on the back.

09-22-2010, 11:34 AM	#2
Badger Drives: 2010 ABM SS #14 of 2,027 Join Date: Jan 2007 Location: New York Posts: 1,217	you mean 275/40/20??...alot of people are running them up front with no problems. __________________ "One of the ordinary modes, by which tyrants accomplish their purposes without resistance, is, by disarming the people, and making it an offense to keep arms." -- Constitutional scholar and Supreme Court Justice Joseph Story, 1840

09-22-2010, 11:52 AM	#4
Sir Nuke Master of All Things Drives: '20 Corvette Stingray Join Date: Jul 2009 Location: Southeast of Houston, Texas Posts: 22,331 View My Garage	YES, in fact there quite a few of us put the REAR stock wheels/tires all the way around, fits like a champ, no issues at all! __________________

09-22-2010, 01:54 PM	#9
rolnslo Rolling along... Drives: 2011 2SS/RS SGM Join Date: Mar 2008 Location: Houston, TX Posts: 4,380 View My Garage	The stock rear wheels are 9" wide. You can run 275/40/20's all the way around using 2 sets of rear stock wheels. The stock wheel offsets can be found here. On the RS/SS wheels, there is only a 5mm offset difference between the front (35mm) and rear (40mm) wheels. The LS/LT offsets split the difference at 38mm all the way around. __________________ 2011 2SS/RS Synergy Green A6

09-25-2010, 05:02 PM	#11
Doc Dances With Mustangs Drives: 2010 1SS/RS MT Join Date: May 2009 Location: USA Posts: 3,819 View My Garage	I have 275/40 19's on 9.5" rims all the way around and it works great. __________________ Blue Angel is here!! 1SS/RS LS3 M6 IBM

09-22-2010, 01:12 PM	#5
Berean Drives: Truck Join Date: Apr 2010 Location: Home Posts: 2,439	I'm getting ready to do this as well.

09-25-2010, 03:37 PM	#10
stormricker Drives: 2014 Camaro 2SS RS Join Date: Sep 2010 Location: Avon IN Posts: 147 View My Garage	But would it be wise to run 275/40s (20") on 8 inch rims? A little bulgy?

09-28-2010, 05:53 PM	#12
tples69 Blaq Out Drives: Hummer H2, 2010 Camaro RS/2SS Join Date: Jan 2008 Location: Itasca, IL Posts: 234 View My Garage	Love my 275's all the way around also!

09-29-2010, 06:45 PM	#13
Berean Drives: Truck Join Date: Apr 2010 Location: Home Posts: 2,439	I now have 275/40's on 10" all the way around. Love it!

09-29-2010, 06:52 PM	#14
2010_5thgen Drives: 2012 Porsche Panamera 4 Join Date: Nov 2007 Location: Ohio Posts: 3,275 View My Garage	anyone running the rear wheels up front that is LOWERED? __________________ Brixton Forged CM10 Wheels IN STOCK!!! RF7 SOON!!!! Camaro/M3/M4 wheels in stock High Gloss Titanium

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