Stuffing 315/35R20 Right Up The Rear

LuvMyV6 · 05-02-2021, 08:34 AM

I see quite a few threads related to this topic, but I still can't seem to find anything directly related to my specific situation.

As the titles says, I want to stuff 315/35R20 in the rear of my 6th Gen. The wheels I've ordered are a set of 20×10.5 (+35mm) in the rear and 20×9 (+30mm) for the front.

I'm also still sitting on stock suspension. Will they fit? Any similar setups? The tires I want to order are all season. Not a track tire.

Joshinator99 · 05-02-2021, 08:54 AM

Quote:

Originally Posted by LuvMyV6

I see quite a few threads related to this topic, but I still can't seem to find anything directly related to my specific situation.

As the titles says, I want to stuff 315/35R20 in the rear of my 6th Gen. The wheels I've ordered are a set of 20×10.5 (+35mm) in the rear and 20×9 (+30mm) for the front.

I'm also still sitting on stock suspension. Will they fit? Any similar setups? The tires I want to order are all season. Not a track tire.

My money is on them rubbing. I ran 305/35/20 after relocating the harness and it’s pretty close (but no rubbing). You’re tire would be even taller plus wider, so might be a bit much. 315/30 would probably be fine as I know others on this board run them.

2SS Capt · 05-02-2021, 12:17 PM

Quote:

Originally Posted by LuvMyV6

I see quite a few threads related to this topic, but I still can't seem to find anything directly related to my specific situation.

As the titles says, I want to stuff 315/35R20 in the rear of my 6th Gen. The wheels I've ordered are a set of 20×10.5 (+35mm) in the rear and 20×9 (+30mm) for the front.

I'm also still sitting on stock suspension. Will they fit? Any similar setups? The tires I want to order are all season. Not a track tire.

You'll need to go with 30's instead of 35's to no rub, also if you are going with 315's you are going to want an 11" wheel, not 10.5"... Check your offsets, the proper offsets should be +23 on the front and +43 on the back...

LuvMyV6 · 05-02-2021, 01:29 PM

Okay, thanks guys. So, it seems as if the 315/35 is out of the question. Most likely gonna rub. However, I did come across a website with a calculator and it said a 315 could sit within a wheel at a minimum of 10.5". Maybe a 315/30??? Anyone? Meh?

Lethal garage was able to fit a set of 315/30/20 Toyo proxes and had a +43mm offset and a 5mm spacer. His tires are a track tire, which is not what I'm wanting. And his offsets are different since mine will be +35mm in the back and his are a +43mm w/5mm spacer. His wheel is also bigger (11"). But, does half an inch really make that big of a difference?

I think I might just go with a 305 since this will be my first set of aftermarket wheels. Experiment around a bit.

2SS Capt · 05-02-2021, 01:33 PM

Quote:

Originally Posted by LuvMyV6

Okay, thanks guys. So, it seems as if the 315/35 is out of the question. Most likely gonna rub. However, I did come across a website with a calculator and it said a 315 could sit within a wheel at a minimum of 10.5". Maybe a 315/30??? Anyone? Meh?

Lethal garage was able to fit a set of 315/30/20 Toyo proxes and had a +43mm offset and a 5mm spacer. His tires are a track tire, which is not what I'm wanting. And his offsets are different since mine will be +35mm in the back and his are a +43mm w/5mm spacer. His wheel is also bigger (11"). But, does half an inch really make that big of a difference?

I think I might just go with a 305 since this will be my first set of aftermarket wheels. Experiment around a bit.

305's would be safer on a 10.5" wheel... I would still consider ordering wheels with the correct offsets...

arpad_m · 05-02-2021, 08:33 PM

I'd just get 305/30/20s and call it a day, especially on a 10.5" wheel. A 35 aspect ratio will result in very tall tires, throw the speedo off quite a bit, and I doubt they'd improve ride comfort that much.

My rear setup is 315/30/20 on 11" wheels, and it's just about perfect with Michelin PS4S tires. Had Toyo R888Rs for a short while, they are a bit taller at the same nominal size.

Also, and please don't take this the wrong way, but do you really need 315's? Wider tires have disadvantages, too (higher rolling resistance, tramlining, weight), and if your car doesn't have some major power adder, why suffer them for little to no gain, given the stock tires already give you enough traction? Or is it just about esthetics?

LuvMyV6 · 05-02-2021, 08:43 PM

Quote:

Originally Posted by arpad_m

I'd just get 305/30/20s and call it a day, especially on a 10.5" wheel. A 35 aspect ratio will result in very tall tires, throw the speedo off quite a bit, and I doubt they'd improve ride comfort that much.

My rear setup is 315/30/20 on 11" wheels, and it's just about perfect with Michelin PS4S tires. Had Toyo R888Rs for a short while, they are a bit taller at the same nominal size.

Also, and please don't take this the wrong way, but do you really need 315's? Wider tires have disadvantages, too (higher rolling resistance, tramlining, weight), and if your car doesn't have some major power adder, why suffer them for little to no gain, given the stock tires already give you enough traction? Or is it just about esthetics?

For now, it's mostly for the look. I really like the wide tires and I'd like to fill up the well as much as possible. I plan on keeping this car forever, so maybe a larger engine down the road is a possibility.

Msquared · 05-06-2021, 07:33 PM

Quote:

Originally Posted by LuvMyV6

For now, it's mostly for the look. I really like the wide tires and I'd like to fill up the well as much as possible. I plan on keeping this car forever, so maybe a larger engine down the road is a possibility.

A 315/35/20 is 28.7" tall. That's 1.5" taller than an SS 1LE rear tire. What in the world makes you think that would look good? As for a "larger engine down the road," this will not help you with that. A 315/30/20 on an 11" et43 rear wheel is not an unreasonable idea. But a 315/35 is.

Plasar · 05-07-2021, 05:29 PM

I dunno, the Camaro COPO looks pretty rad:

.

Msquared · 05-07-2021, 07:12 PM

Quote:

Originally Posted by Plasar

I dunno, the Camaro COPO looks pretty rad

Yeah...until you actually have to turn a corner.

Chrome383Z · 05-08-2021, 09:16 AM

Quote:

Originally Posted by Msquared

Yeah...until you actually have to turn a corner.

Plasar · 05-09-2021, 10:14 AM

I wonder if Agent K has gone up a width or increased profile - this look is STUNNING!

https://www.camaro6.com/forums/showp...&postcount=316
https://www.camaro6.com/forums/showp...&postcount=317

05-02-2021, 08:34 AM	#1
LuvMyV6 Drives: 2017 1LT Camaro Join Date: Jun 2019 Location: Columbus, OH Posts: 52	Stuffing 315/35R20 Right Up The Rear I see quite a few threads related to this topic, but I still can't seem to find anything directly related to my specific situation. As the titles says, I want to stuff 315/35R20 in the rear of my 6th Gen. The wheels I've ordered are a set of 20×10.5 (+35mm) in the rear and 20×9 (+30mm) for the front. I'm also still sitting on stock suspension. Will they fit? Any similar setups? The tires I want to order are all season. Not a track tire.

05-02-2021, 08:33 PM	#6
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,614 View My Garage	I'd just get 305/30/20s and call it a day, especially on a 10.5" wheel. A 35 aspect ratio will result in very tall tires, throw the speedo off quite a bit, and I doubt they'd improve ride comfort that much. My rear setup is 315/30/20 on 11" wheels, and it's just about perfect with Michelin PS4S tires. Had Toyo R888Rs for a short while, they are a bit taller at the same nominal size. Also, and please don't take this the wrong way, but do you really need 315's? Wider tires have disadvantages, too (higher rolling resistance, tramlining, weight), and if your car doesn't have some major power adder, why suffer them for little to no gain, given the stock tires already give you enough traction? Or is it just about esthetics? Attached Images __________________ 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

05-07-2021, 05:29 PM	#9
Plasar Drives: 2017 ZL1 Vert M6 Join Date: Feb 2019 Location: Portland, OR Posts: 477	I dunno, the Camaro COPO looks pretty rad: . Attached Images

05-09-2021, 10:14 AM	#12
Plasar Drives: 2017 ZL1 Vert M6 Join Date: Feb 2019 Location: Portland, OR Posts: 477	I wonder if Agent K has gone up a width or increased profile - this look is STUNNING! https://www.camaro6.com/forums/showp...&postcount=316 https://www.camaro6.com/forums/showp...&postcount=317 Attached Images

05-02-2021, 01:29 PM	#4
LuvMyV6 Drives: 2017 1LT Camaro Join Date: Jun 2019 Location: Columbus, OH Posts: 52	Okay, thanks guys. So, it seems as if the 315/35 is out of the question. Most likely gonna rub. However, I did come across a website with a calculator and it said a 315 could sit within a wheel at a minimum of 10.5". Maybe a 315/30??? Anyone? Meh? Lethal garage was able to fit a set of 315/30/20 Toyo proxes and had a +43mm offset and a 5mm spacer. His tires are a track tire, which is not what I'm wanting. And his offsets are different since mine will be +35mm in the back and his are a +43mm w/5mm spacer. His wheel is also bigger (11"). But, does half an inch really make that big of a difference? I think I might just go with a 305 since this will be my first set of aftermarket wheels. Experiment around a bit.

User Name		Remember Me?
Password