Help selecting the correct tires size. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

tarik1985 · 09-24-2019, 08:14 AM

Hi everybody.
I'm looking to buy new wheels but they only have them in 20"x9" front and 20"x 10.5" rear (https://www.ebay.com/itm/4rims-set-2...72.m2749.l2649) My current wheels and tires are 245/45/20 front and 275/40/20 rear.
I was told the wheels are a bit wider for my current tires so I'm trying to figure out the correct tires size I'll need to make them fit better. I'm assuming I'll have to go wider but have no idea when tires are concerned. Any help would be greatly appreciate ��

charles71 · 09-24-2019, 09:36 AM

275/40/20 up front and 315/35/20 in the rear. These are both 28 28" tall tires

tarik1985 · 09-24-2019, 10:23 AM

Quote:

Originally Posted by charles71

275/40/20 up front and 315/35/20 in the rear. These are both 28 28" tall tires

Thank you for the response.
I was thinking the same thing for the front 275/40/20. And 305/35/20 for the rear.

KillboyPowerhead · 09-24-2019, 11:40 AM

Quote:

Originally Posted by tarik1985

Thank you for the response.
I was thinking the same thing for the front 275/40/20. And 305/35/20 for the rear.

305/35/20 is also doable in the rear, with only ~0.25" difference in diameter compared to a 315, less than how much a tire wears over its life (which is roughly 0.5").

tarik1985 · 09-24-2019, 12:40 PM

Quote:

Originally Posted by KillboyPowerhead

305/35/20 is also doable in the rear, with only ~0.25" difference in diameter compared to a 315, less than how much a tire wears over its life (which is roughly 0.5").

Thx for the input..
Is there a benifit of running the 315 over the 305?

102SS · 09-24-2019, 04:16 PM

Quote:

Originally Posted by tarik1985

Thx for the input..
Is there a benifit of running the 315 over the 305?

Your more vulnerable to stone chips on the quarter/valance.

tarik1985 · 09-24-2019, 04:20 PM

Quote:

Originally Posted by 102SS

Your more vulnerable to stone chips on the quarter/valance.

Never thought of that 🤔... So overall the 315 is a better choice for the 10.5 inch wheels. I just hope I won't have any rubbing problems.
Thank you guys.

102SS · 09-24-2019, 04:22 PM

Quote:

Originally Posted by tarik1985

Never thought of that 🤔... So overall the 315 is a better choice for the 10.5 inch wheels. I just hope I won't have any rubbing problems.
Thank you guys.

Only if you don't mind the stone chips.

I went with 305's on my 20x11's based on the previous owners recommendation.

tarik1985 · 09-24-2019, 04:31 PM

Quote:

Originally Posted by 102SS

Only if you don't mind the stone chips.

I went with 305's on my 20x11's based on the previous owners recommendation.

Damn 11" is pretty wide I bet it looks great. Did u experience any tire rubbing problems?

102SS · 09-25-2019, 07:15 PM

Quote:

Originally Posted by tarik1985

Damn 11" is pretty wide I bet it looks great. Did u experience any tire rubbing problems?

None they are factory 5 spoke ZL1 wheels 20x10 and 20x11.

I could have went 295 front and 315 rear but I stuck to the stock size 285 and 305.

tarik1985 · 09-25-2019, 07:23 PM

Quote:

Originally Posted by 102SS

None they are factory 5 spoke ZL1 wheels 20x10 and 20x11.

I could have went 295 front and 315 rear but I stuck to the stock size 285 and 305.

What is the offset on them if you don't mind me asking.
I went 275/40 front and 305/35 rear. My wheels have a 25 and 45 offset. I'm worried the wheels might stick out too much past the fender.

KillboyPowerhead · 09-25-2019, 07:53 PM

Quote:

Originally Posted by tarik1985

What is the offset on them if you don't mind me asking.
I went 275/40 front and 305/35 rear. My wheels have a 25 and 45 offset. I'm worried the wheels might stick out too much past the fender.

The factory ZL1 wheel specs are +23mm front and +43mm rear, so your wheels will be 2mm further inward. Nothing to worry about unless you're lowered a fair bit.

tarik1985 · 09-25-2019, 07:59 PM

Quote:

Originally Posted by KillboyPowerhead

The factory ZL1 wheel specs are +23mm front and +43mm rear, so your wheels will be 2mm further inward. Nothing to worry about unless you're lowered a fair bit.

Thx for the response

.. Car isn't lowered at all. Already ordered the wheels and tires.. So I'll be finding out soon 😊

09-24-2019, 08:14 AM	#1
tarik1985 Drives: 2010 Camaro SS/RS Join Date: Jan 2014 Location: USA Posts: 268	Help selecting the correct tires size. Hi everybody. I'm looking to buy new wheels but they only have them in 20"x9" front and 20"x 10.5" rear (https://www.ebay.com/itm/4rims-set-2...72.m2749.l2649) My current wheels and tires are 245/45/20 front and 275/40/20 rear. I was told the wheels are a bit wider for my current tires so I'm trying to figure out the correct tires size I'll need to make them fit better. I'm assuming I'll have to go wider but have no idea when tires are concerned. Any help would be greatly appreciate �� __________________ 2010 Camaro SS/RS L99. Last edited by tarik1985; 09-24-2019 at 08:48 AM.

09-24-2019, 09:36 AM	#2
charles71 Drives: 2011 Camaro SS Join Date: Aug 2015 Location: Southern Maryland Posts: 110 View My Garage	275/40/20 up front and 315/35/20 in the rear. These are both 28 28" tall tires __________________ Livernois Stage II Heads & Cam, LS7 Lifters, Ported Intake & Throttle Body, Rotofab CAI, BBK High Flow Fuel Rail @ Guage, Eaton Tru Trac Posi with 3.91 gears, 1000 HP Axels, Kooks Long tubes & full Corsa Exhaust, GM Hurst Short Throw Shifter, Mcleod RXT Twin Disc, Vitesse Throttle Controller, 1.5" Lowering Springs, Strut Tower Brace, SLP 25% Underdrive Pulley, Apex reservoir relocation kit and air scoop.