Any benefits of increasing tire width?

NiteBlitz · 11-05-2020, 01:55 PM

Thinking about going from 305 to 315 in the back snd keeping front at 285. Or possibly increasing front as well. Any Cons? Benefits? Does it effect driving/ride quality.

Thoughts?

zirad54 · 11-05-2020, 02:01 PM

what are you going to use the car for? Daily driving, no racing...keep it stock.

Z OH 6 · 11-05-2020, 02:04 PM

Other than the more aggressive stance, there's not much benefit unless you need more traction than what you have with the OEM tire size. The difference in tire size is so minimal, you're not going to notice any difference in day to day driving.

Vigilante375 · 11-05-2020, 05:15 PM

If you're just driving around town. I don't see any benefit.

If you're drag racing or racing on a road course, there is a benefit.

Not every tire contacts the ground the same. Some have more of a contact patch and others have less.

You really wouldn't notice the 1 up size just driving around unless you're being aggressive in the corners but then you'd have to know what you're "feeling" to know what you're looking for.

It's your car, do what you want but if you're only driving it around like a normal, law abiding by person should. Then I see no benefit.

dbs1 · 11-05-2020, 06:56 PM

Who drives these cars like law abiding citizens ALL the time. I find that very difficult!

When I bought the car it had 285/315 (r888r) on the stock wheels. Since then I've put 305/325 gy3's with Apex arc 8 wheels to use as dd and back and forth to the track.

I'm guessing the wider tires pay dividends at the track, but they follow all the cracks as well on the street. If I wasn't planning on driving to the track on a regular basis and driving in colder weather, I'd use the stock setup everyday.

Markoz28 · 11-05-2020, 08:32 PM

I’m running R888Rs in 325/30/20. I need all the traction I can get. Stance looks sick too!

ZL1naples · 11-05-2020, 09:17 PM

I run 315 on the rear and 285 on the front. Stock size wheels. Toyo r888r all around. Street only. I do get a bit more traction on a hard start with the 315s. The more traction the better on the rear. I see no advantage to up-sizing the fronts for street driving only.

TRZ06 · 11-05-2020, 09:23 PM

Wider tires have a larger effect on lateral G's in the corners than straight line traction.

Going wider equally both front and rear will keep the balance in the corners and provide greater cornering loads.

arpad_m · 11-05-2020, 10:11 PM

Quote:

Originally Posted by TRZ06

Wider tires have a larger effect on lateral G's in the corners than straight line traction.

Going wider equally both front and rear will keep the balance in the corners and provide greater cornering loads.

I went for 275/35/20 fronts and 315/30/20 rears with 1LE spec wheels on my supercharged SS to preserve the front/rear balance (within 0.3%) as per tiresize.com, and cornering capability increased much more tangibly than straight line acceleration.

The look of wider tires, however, would definitely be more menacing, especially on your ZL1.

zain · 11-06-2020, 06:48 AM

looks & grip

LT4Greg · 11-06-2020, 06:50 AM

Wider tires usually cost more money too!

Markoz28 · 11-06-2020, 06:57 AM

Im running 295/30/20 front and 325/30/20 rear. The wider the tire the more contact you have to the ground. The rear tire width obviously helps with straight line but going wider in the front hinders it as it is more mass to rotate. In the corners wider tires all the way around are ideal to a point. I went with my rear size for the straight line traction and looks. I went with the front width for the looks. Over all I would not change a thing and this will be the combination I stick with.

arpad_m · 11-06-2020, 08:47 AM

BTW, see http://bndtechsource.ucoz.com/index/...alculator/0-20, and specifically the screenshots below for an example with 99Y load index tires. However, if the new, wider tire has a significantly higher load index, say 103 or 104 vs the original 99, the resulting contact patch can actually be smaller.

The taller sidewall on the 315 improves ride quality a tiny bit as well.

Bangkok_ZL1 · 11-06-2020, 11:38 AM

Quote:

Originally Posted by ZL1naples

I run 315 on the rear and 285 on the front. Stock size wheels. Toyo r888r all around. Street only. I do get a bit more traction on a hard start with the 315s. The more traction the better on the rear. I see no advantage to up-sizing the fronts for street driving only.

You must have a loud stereo....

11-05-2020, 01:55 PM	#1
NiteBlitz Drives: Camaro ZL1 Join Date: May 2020 Location: Tampa Posts: 166	Any benefits of increasing tire width? Thinking about going from 305 to 315 in the back snd keeping front at 285. Or possibly increasing front as well. Any Cons? Benefits? Does it effect driving/ride quality. Thoughts?

11-05-2020, 09:23 PM	#8
TRZ06 Drives: 22' Porsche PDK GT4 Join Date: Mar 2018 Location: Bay Area Posts: 2,014	Wider tires have a larger effect on lateral G's in the corners than straight line traction. Going wider equally both front and rear will keep the balance in the corners and provide greater cornering loads. __________________ Current: 22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS *1LE* (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06

11-06-2020, 06:50 AM	#11
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	Wider tires usually cost more money too! __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

11-06-2020, 08:47 AM	#13
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,605 View My Garage	BTW, see http://bndtechsource.ucoz.com/index/...alculator/0-20, and specifically the screenshots below for an example with 99Y load index tires. However, if the new, wider tire has a significantly higher load index, say 103 or 104 vs the original 99, the resulting contact patch can actually be smaller. The taller sidewall on the 315 improves ride quality a tiny bit as well. 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

11-05-2020, 02:01 PM	#2
zirad54 Drives: 2017 Camaro 2SS, MRC, NPP, Join Date: Jul 2016 Location: Houstonish Posts: 137 View My Garage	what are you going to use the car for? Daily driving, no racing...keep it stock.

11-05-2020, 02:04 PM	#3
Z OH 6 Drives: 2021 Red Hot ZL1 Join Date: Sep 2020 Location: Gapplebees Posts: 3,084	Other than the more aggressive stance, there's not much benefit unless you need more traction than what you have with the OEM tire size. The difference in tire size is so minimal, you're not going to notice any difference in day to day driving.

11-05-2020, 05:15 PM	#4
Vigilante375 Drives: 2018 Camaro ZL1 Join Date: Aug 2018 Location: Georgia Posts: 1,368	If you're just driving around town. I don't see any benefit. If you're drag racing or racing on a road course, there is a benefit. Not every tire contacts the ground the same. Some have more of a contact patch and others have less. You really wouldn't notice the 1 up size just driving around unless you're being aggressive in the corners but then you'd have to know what you're "feeling" to know what you're looking for. It's your car, do what you want but if you're only driving it around like a normal, law abiding by person should. Then I see no benefit.

11-05-2020, 06:56 PM	#5
dbs1 Drives: 2017 ZL1 Join Date: Aug 2020 Location: Lakeside, Az Posts: 491	Who drives these cars like law abiding citizens ALL the time. I find that very difficult! When I bought the car it had 285/315 (r888r) on the stock wheels. Since then I've put 305/325 gy3's with Apex arc 8 wheels to use as dd and back and forth to the track. I'm guessing the wider tires pay dividends at the track, but they follow all the cracks as well on the street. If I wasn't planning on driving to the track on a regular basis and driving in colder weather, I'd use the stock setup everyday.

11-05-2020, 08:32 PM	#6
Markoz28 Drives: 18 ZL1 nightfall grey A10 Join Date: Apr 2018 Location: RGV Texas Posts: 1,527	I’m running R888Rs in 325/30/20. I need all the traction I can get. Stance looks sick too!

11-05-2020, 09:17 PM	#7
ZL1naples Drives: 2019 ZL1 Join Date: Mar 2019 Location: florida Posts: 41	I run 315 on the rear and 285 on the front. Stock size wheels. Toyo r888r all around. Street only. I do get a bit more traction on a hard start with the 315s. The more traction the better on the rear. I see no advantage to up-sizing the fronts for street driving only.

11-06-2020, 06:48 AM	#10
zain Drives: ZL1 Join Date: Jan 2019 Location: Abu Dhabi Posts: 200	looks & grip

11-06-2020, 06:57 AM	#12
Markoz28 Drives: 18 ZL1 nightfall grey A10 Join Date: Apr 2018 Location: RGV Texas Posts: 1,527	Im running 295/30/20 front and 325/30/20 rear. The wider the tire the more contact you have to the ground. The rear tire width obviously helps with straight line but going wider in the front hinders it as it is more mass to rotate. In the corners wider tires all the way around are ideal to a point. I went with my rear size for the straight line traction and looks. I went with the front width for the looks. Over all I would not change a thing and this will be the combination I stick with.

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