Largest Tires For Stock 2SS 20" Wheels?

Spaceme1117 · 03-27-2021, 06:50 AM

So I have searched multiple pages here and I have not found a definitive answer yet.

I have a 2017 2SS with stock 20" wheels.

Tires sizes are 245/40-R20 front and 275/35-R20 rear.

Tire size comparison shows that a 255/40-R20 front and 285/35-20 rear would have a negligible difference in diameter compared to stock but give an extra 0.4 inches of width both front and rear.

Has someone put this size tires on their car and do they fit without rubbing?

Thanks.

enzia35 · 03-27-2021, 01:18 PM

Those are fine. People have put 305/30 on stock SS rears.

Spaceme1117 · 03-27-2021, 02:50 PM

Quote:

Originally Posted by enzia35

Those are fine. People have put 305/30 on stock SS rears.

Thank you, sir.

arpad_m · 03-27-2021, 10:59 PM

I had a 255/40 + 285/35 combo with stock wheels as well, no problems there whatsoever. 305/30 is stretching it (heh), may work with some relatively narrower tires for the width spec, but it's not ideal, the sidewall will almost roll over.

TP2SS · 03-28-2021, 09:19 PM

I recently bought a set of takeoffs where the installer goofed and put the 275/35 on the front 8.5 rim and a 245/40 on the rear 9.5 rim. The 245 on the 9.5 clearly looked wrong but the 275 on the 8.5 wasn’t apparent to me or the seller until after I saw the weird looking 245 on the other and started measuring things. Seller drove them that way for 1000 miles and I see no ill effect on the tire. Tires are non run flat all season Nexens with a Z rating.
I’m swapping them this week to put my GY F1s on the wheels I acquired (OEM ‘19+ split spokes...they are a bit nicer looking than my ‘16 split spokes).

Not sure there’s a combo with 275s on front that would keep the rears close to the same height, though, which is needed to keep the stabilitrac from faulting.

NotFast · 03-28-2021, 10:05 PM

Someone else here shared this, so I will too:

Norm Peterson · 03-29-2021, 10:30 AM

^^^ Thanks.

I hadn't seen that table before and it's generally pretty good (and appears to prioritize handling over "meaty appearance" - a good thing IMO).

FWIW, taller-profile tires typically adapt a little better to the fitments listed under "Min tyre width" than lower-profiles . . . just noticed the UK spelling 'tyre' which probably explains why I hadn't seen it before.

Norm

03-27-2021, 06:50 AM	#1
Spaceme1117 Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019 Location: Erlanger, Kentucky 41018 Posts: 814	Largest Tires For Stock 2SS 20" Wheels? So I have searched multiple pages here and I have not found a definitive answer yet. I have a 2017 2SS with stock 20" wheels. Tires sizes are 245/40-R20 front and 275/35-R20 rear. Tire size comparison shows that a 255/40-R20 front and 285/35-20 rear would have a negligible difference in diameter compared to stock but give an extra 0.4 inches of width both front and rear. Has someone put this size tires on their car and do they fit without rubbing? Thanks.

03-27-2021, 01:18 PM	#2
enzia35 Drives: '16 Garnet Red 1SS Join Date: Mar 2014 Location: College Station, TX Posts: 3,450	Those are fine. People have put 305/30 on stock SS rears. __________________ '16 Camaro 1SS '18 Miata GT Gone: '01 Camaro, '14 Camaro, '90 Miata

03-27-2021, 10:59 PM	#4
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,573 View My Garage	I had a 255/40 + 285/35 combo with stock wheels as well, no problems there whatsoever. 305/30 is stretching it (heh), may work with some relatively narrower tires for the width spec, but it's not ideal, the sidewall will almost roll over. __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

03-28-2021, 09:19 PM	#5
TP2SS Drives: 2016 2SS Convertible Join Date: Dec 2019 Location: SE Michigan Posts: 575	I recently bought a set of takeoffs where the installer goofed and put the 275/35 on the front 8.5 rim and a 245/40 on the rear 9.5 rim. The 245 on the 9.5 clearly looked wrong but the 275 on the 8.5 wasn’t apparent to me or the seller until after I saw the weird looking 245 on the other and started measuring things. Seller drove them that way for 1000 miles and I see no ill effect on the tire. Tires are non run flat all season Nexens with a Z rating. I’m swapping them this week to put my GY F1s on the wheels I acquired (OEM ‘19+ split spokes...they are a bit nicer looking than my ‘16 split spokes). Not sure there’s a combo with 275s on front that would keep the rears close to the same height, though, which is needed to keep the stabilitrac from faulting. __________________ 2016 2SS Convertible Hyper Blue/Ash Gray A8 Magnetic Ride Control Dual Mode Exhaust 2019+ version Split Spoke Silver Wheels Navigation Silver Rally Stripes

03-28-2021, 10:05 PM	#6
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	Someone else here shared this, so I will too: Attached Images

03-29-2021, 10:30 AM	#7
Norm Peterson corner barstool sitter Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012 Location: Eastern Time Zone Posts: 6,990	^^^ Thanks. I hadn't seen that table before and it's generally pretty good (and appears to prioritize handling over "meaty appearance" - a good thing IMO). FWIW, taller-profile tires typically adapt a little better to the fitments listed under "Min tyre width" than lower-profiles . . . just noticed the UK spelling 'tyre' which probably explains why I hadn't seen it before. Norm __________________ '08 GT coupe 5M (the occasional track toy) '19 WRX 6M (the family sedan . . . seriously)

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