Anyone try 325/30/19 3rs in the front?

Zl1+911 · 03-30-2021, 05:35 PM

Looking to use a set of rear tires in the front of my ZLE for track - any feedback on using the rear tires upfront? Fitment and performance? Thx

Og Neon · 03-30-2021, 09:15 PM

335 won't fit up front without serious poke and a big spacer. If you are ok with about 2 inches of tire outside the fender and a huge spacer then yes you can run it. Not sure how well it will clear going lock to lock though.

SFV1LE · 03-31-2021, 01:03 AM

I run 315/680/18 up front on my ZLE, the section width and diameter are only a little bigger than the 305/30/19 GYSC3R, and at full lock the outer edge of these 315/680/18s rub the center of the backside fender liner. I have to remember not to turn the wheel that far :-)

325/30/19 has a bigger section width, they are not a good choice.

Zl1+911 · 03-31-2021, 05:33 AM

305 to 325 is 0.8 inches ....I would have thought outside of full lock it should not be a big deal?

Zl1+911 · 03-31-2021, 05:34 AM

Quote:

Originally Posted by SFV1LE

I run 315/680/18 up front on my ZLE, the section width and diameter are only a little bigger than the 305/30/19 GYSC3R, and at full lock the outer edge of these 315/680/18s rub the center of the backside fender liner. I have to remember not to turn the wheel that far :-)

325/30/19 has a bigger section width, they are not a good choice.

Perhaps the two tires being different brands may have played a role too? What was the 315 brand? Thx

LiqTenExp · 03-31-2021, 06:32 AM

Quote:

Originally Posted by Zl1+911

305 to 325 is 0.8 inches ....I would have thought outside of full lock it should not be a big deal?

I just put 305/30R19 on 11" wheels on my regular ZL1, it is tight! It may only be 0.8" but you are at the limit to start with nearly.

TheRealJA105 · 03-31-2021, 06:46 AM

Quote:

Originally Posted by Zl1+911

Looking to use a set of rear tires in the front of my ZLE for track - any feedback on using the rear tires upfront? Fitment and performance? Thx

I've seen 2 ZLEs tracking with the 325 G3rs on the front 11" rims, they fit.

Quote:

Originally Posted by Og Neon

335 won't fit up front without serious poke and a big spacer. If you are ok with about 2 inches of tire outside the fender and a huge spacer then yes you can run it. Not sure how well it will clear going lock to lock though.

Zl1+911 · 03-31-2021, 07:18 AM

Quote:

Originally Posted by LiqTenExp

I just put 305/30R19 on 11" wheels on my regular ZL1, it is tight! It may only be 0.8" but you are at the limit to start with nearly.

Regular ZL1 has a different suspension ....

LiqTenExp · 03-31-2021, 07:33 AM

Quote:

Originally Posted by Zl1+911

Regular ZL1 has a different suspension ....

Not after you take a grinder to it

SFV1LE · 03-31-2021, 10:55 AM

Quote:

Originally Posted by Zl1+911

Perhaps the two tires being different brands may have played a role too? What was the 315 brand? Thx

Yes, that I realize that may be a factor. The 315/680/18 are Pirelli DH slicks, as non-DOT racing slicks the shoulders are different than GY3R, they are very squared off.

tomster · 03-31-2021, 11:48 AM

I ran 325 up front on my ZLE with no rub

TWG1 · 03-31-2021, 07:41 PM

Those running 325’s up front on ZLE’s, I assume you’re talking about mounting on an OEM 19x11 rim? Did you lose turn-in or have any other negative effects?

JSH · 03-31-2021, 08:04 PM

No, just rears.

Zl1+911 · 03-31-2021, 08:21 PM

Quote:

Originally Posted by tomster

I ran 325 up front on my ZLE with no rub

Thanks!! Love the site for the ability to get good clean feedback.

Any thoughts on performance impact for 325 vs 305?

03-30-2021, 05:35 PM	#1
Zl1+911 Drives: 997 GTS, ZL1 A10, ZLEM6, ZLEA10 Join Date: Dec 2017 Location: NYC/NJ Posts: 630	Anyone try 325/30/19 3rs in the front? Looking to use a set of rear tires in the front of my ZLE for track - any feedback on using the rear tires upfront? Fitment and performance? Thx

03-30-2021, 09:15 PM	#2
Og Neon Lover of Speed Drives: 2018 ZLE Join Date: Feb 2016 Location: Phoenix Posts: 266	335 won't fit up front without serious poke and a big spacer. If you are ok with about 2 inches of tire outside the fender and a huge spacer then yes you can run it. Not sure how well it will clear going lock to lock though. __________________ Killer Whale Racing 2021 One Lap of America Track Videos 2019 One Lap of America Track Videos 2017 One Lap of America Track Videos 2022 Ram TRX 2018 Camaro ZL1 1LE 2020 Range Rover Sport SVR (Sold) 2014 Grand Cherokee SRT (Sold) 2014 Camaro Z/28 (Sold)

03-31-2021, 11:48 AM	#11
tomster RedLine Drives: 2022 ZL1 1LE Join Date: Dec 2012 Location: Chicago area Posts: 792 View My Garage	I ran 325 up front on my ZLE with no rub __________________ 2018 GMC 2500 "Blue" (Sold) 2018 ZL1 1LE Hyper Blue" (Sold) 2018 CTS-V "Black" (Sold) 2022 GMC 2500 "Blue" 2022 ZL1 1LE 6spd "Rapid Blue" 2023 ZL1 1LE Auto Rapid Blue (ordered)

03-31-2021, 07:41 PM	#12
TWG1 TWG1 Drives: 2019 Camaro ZLE Join Date: Nov 2019 Location: PENSACOLA, FL Posts: 179	Those running 325’s up front on ZLE’s, I assume you’re talking about mounting on an OEM 19x11 rim? Did you lose turn-in or have any other negative effects? __________________ 2019 ZLE M6 2019 ZL1 A10 (Sold) 1967 Jaguar XKE Series 1 Roadster 2021 F150 Powerboost (on order)

03-31-2021, 08:04 PM	#13
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,559	No, just rears. __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

03-31-2021, 01:03 AM	#3
SFV1LE Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018 Location: CA Posts: 1,360	I run 315/680/18 up front on my ZLE, the section width and diameter are only a little bigger than the 305/30/19 GYSC3R, and at full lock the outer edge of these 315/680/18s rub the center of the backside fender liner. I have to remember not to turn the wheel that far :-) 325/30/19 has a bigger section width, they are not a good choice.

03-31-2021, 05:33 AM	#4
Zl1+911 Drives: 997 GTS, ZL1 A10, ZLEM6, ZLEA10 Join Date: Dec 2017 Location: NYC/NJ Posts: 630	305 to 325 is 0.8 inches ....I would have thought outside of full lock it should not be a big deal?

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