Question for the drag experts - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Royal Tiger · 12-26-2022, 10:56 AM

I currently have 20x9.5 fronts and 20x11 rears running a 275/40-20 and 315/35-20 set up. I just got a major steal for a set of 18x11 drag set up with a 325/35-18 Mickey Thompson Street E/T’s, never used. I checked a tire calculator and it says it’s within the 6-7% “acceptable diameter discrepancy” at -5.9%, but would it cause me issues? I’m hoping to just use it for passes at the track (1/4) on a prepped surface, although part of me want to try to use them on a Friday night street hang out in “Mexico”. Thoughts?

Thanks everyone.

davidscamaro · 12-26-2022, 01:54 PM

Only way to know for sure is to try them and see if it throws the tire size code , probley won't but dont know tell you try the 27" rears with the 29.8" fronts , tire pressure and how wide the rim could help or hurt with the % difference

Might have to go to a diffrent front size , 275 35 20 is 27.6"

TheFlyingBananaSS · 12-26-2022, 02:29 PM

You should be good to go.

BRUKSHOT · 12-26-2022, 03:29 PM

So, when you say Mexico. which specific part of the country are you thinking? LOL!

Royal Tiger · 12-26-2022, 04:14 PM

Quote:

Originally Posted by BRUKSHOT

So, when you say Mexico. which specific part of the country are you thinking? LOL!

I’m guessing you know where “Mexico” is. Probably one nearby to your place.

Royal Tiger · 12-26-2022, 04:16 PM

Quote:

Originally Posted by davidscamaro

Only way to know for sure is to try them and see if it throws the tire size code , probley won't but dont know tell you try the 27" rears with the 29.8" fronts , tire pressure and how wide the rim could help or hurt with the % difference

Might have to go to a diffrent front size , 275 35 20 is 27.6"

I’ll see what happens. Probably won’t get driven for awhile. Too cold.

If I do that front though it’ll throw off the tires I have now on the rear. I was hoping for a simple rear swap at the track.

Royal Tiger · 12-26-2022, 04:17 PM

Quote:

Originally Posted by TheFlyingBananaSS

You should be good to go.

Fingers crossed!

I’ll be pm’ing you when we do our track rental for this year.

davidscamaro · 12-26-2022, 04:59 PM

Quote:

Originally Posted by Royal Tiger

I’ll see what happens. Probably won’t get driven for awhile. Too cold.

If I do that front though it’ll throw off the tires I have now on the rear. I was hoping for a simple rear swap at the track.

305 45 18 would be ideal with 29ish" fronts , size i have been running

Royal Tiger · 12-26-2022, 05:05 PM

Thank you for sharing that. I’ve been playing around with the tire calculator. I might need to stay with a 20” front with the oversized rotors I have.

Royal Tiger · 12-26-2022, 05:07 PM

I can’t believe I forgot to post pics.

Badbubba · 12-26-2022, 07:46 PM

275 40 20 states 28.7" on average. The MTs state 27". Imo, that's a lot of difference for the wheel speed/abs sensors. Good chance it will set off the Stabilitrak light. TPMS light will also be on. 2010's will program with air pressure difference, 2013 use a tool iirc.

Royal Tiger · 12-27-2022, 11:41 AM

This is the way I’m thinking I’ll go and use for just track, keeping my current set up for street and road course.

Aqua Blue RS/SS · 12-27-2022, 11:55 AM

Sorry can’t help but…. I think the title of this thread might be better suited to mustang owners

Royal Tiger · 12-27-2022, 12:05 PM

Quote:

Originally Posted by Aqua Blue RS/SS

Sorry can’t help but…. I think the title of this thread might be better suited to mustang owners

That’s question for the pedestrian killing experts. Although that title is rapidly being taken from them by Mopar drivers.

12-26-2022, 10:56 AM	#1
Royal Tiger Account Suspended Drives: 2013 2SS/RS Convertible Join Date: Apr 2016 Location: Lehigh Valley, PA Posts: 3,873	Question for the drag experts I currently have 20x9.5 fronts and 20x11 rears running a 275/40-20 and 315/35-20 set up. I just got a major steal for a set of 18x11 drag set up with a 325/35-18 Mickey Thompson Street E/T’s, never used. I checked a tire calculator and it says it’s within the 6-7% “acceptable diameter discrepancy” at -5.9%, but would it cause me issues? I’m hoping to just use it for passes at the track (1/4) on a prepped surface, although part of me want to try to use them on a Friday night street hang out in “Mexico”. Thoughts? Thanks everyone.

12-26-2022, 01:54 PM	#2
davidscamaro Drives: 2010 SS/RS M6 BIG cam Join Date: Mar 2016 Location: McDonald's DT Posts: 856	Only way to know for sure is to try them and see if it throws the tire size code , probley won't but dont know tell you try the 27" rears with the 29.8" fronts , tire pressure and how wide the rim could help or hurt with the % difference Might have to go to a diffrent front size , 275 35 20 is 27.6" __________________ BIG cam ...... 305 45 18 Mickys ...... BMR suspensions

12-26-2022, 02:29 PM	#3
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,262	You should be good to go. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.

12-26-2022, 05:07 PM	#10
Royal Tiger Account Suspended Drives: 2013 2SS/RS Convertible Join Date: Apr 2016 Location: Lehigh Valley, PA Posts: 3,873	I can’t believe I forgot to post pics. Attached Images

12-26-2022, 07:46 PM	#11
Badbubba GrINned & JUICEd Drives: 15STI, 10Expy, 10 2SS/RS M6, 47KB1 Join Date: Nov 2009 Location: Pittsburgh, PA Posts: 1,252	275 40 20 states 28.7" on average. The MTs state 27". Imo, that's a lot of difference for the wheel speed/abs sensors. Good chance it will set off the Stabilitrak light. TPMS light will also be on. 2010's will program with air pressure difference, 2013 use a tool iirc. __________________ GPI SS3 Cam & stuff,N.O. Plate(dedicated fuel tank,progressive,fuel hose upgrade,remote opener,heater,console switches),LNC2000,CTAP,ARH 1 7/8" LTs/gutted cats/X pipe/mufflers,Jet Hot coated LTs,GPI HPT Tune,CAI, Scoop,Rx Catch Can,Gates heater hose relocation, Remote clutch & auto brake res,Metco loop,Momentum Tunnel Brace,TSW Nurb 18",555 & 05,Pfadt trailing arms & toe rods,Autometer WB,Fesler Pillar Pod,LED strips (int),Lloyds floor & trunk mats,LED DRL/front turn & license plate,DRL harness,VLEDs tail lights,Plasticoat Bowties. Ord: Oct 5, 2009 Rec: Nov 19, 2009 13.17@112.6 stock

12-26-2022, 03:29 PM	#4
BRUKSHOT Drives: 2014 Yellow Camaro 2SS RS M6 Join Date: Oct 2013 Location: Wisconsin Posts: 188	So, when you say Mexico. which specific part of the country are you thinking? LOL!

12-26-2022, 05:05 PM	#9
Royal Tiger Account Suspended Drives: 2013 2SS/RS Convertible Join Date: Apr 2016 Location: Lehigh Valley, PA Posts: 3,873	Thank you for sharing that. I’ve been playing around with the tire calculator. I might need to stay with a 20” front with the oversized rotors I have.

12-27-2022, 11:41 AM	#12
Royal Tiger Account Suspended Drives: 2013 2SS/RS Convertible Join Date: Apr 2016 Location: Lehigh Valley, PA Posts: 3,873	This is the way I’m thinking I’ll go and use for just track, keeping my current set up for street and road course. Attached Images

12-27-2022, 11:55 AM	#13
Aqua Blue RS/SS Drives: ABM #93 Join Date: Oct 2018 Location: Lotaburger Posts: 3,191	Sorry can’t help but…. I think the title of this thread might be better suited to mustang owners __________________ ABM #2399 2SS/RS:SOLD ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles.