305 tires - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BamaRocker · 06-09-2015, 03:20 PM

i just ordered 10.5 rims all 4 corners and 275/305..will this be an issue..

CamaroCracka · 06-09-2015, 03:49 PM

not as long as they are the same height.

streetyme · 06-09-2015, 04:06 PM

I am running 305 35 20 in the back and 275 40 20 in the front with no issues..

revived · 06-09-2015, 04:10 PM

you really need to look at your full tire size to really know. ex. 305/35/20

I want to run a 20x9 on 275/35 & 20x10.5 on 295/35 or 305/35 but I really don't know if its possible as nobody has tried it.

JDP Sales · 06-09-2015, 04:34 PM

Quote:

Originally Posted by revived

you really need to look at your full tire size to really know. ex. 305/35/20

I want to run a 20x9 on 275/35 & 20x10.5 on 295/35 or 305/35 but I really don't know if its possible as nobody has tried it.

Go 275/40 up front and you'll be good with those rear sizes.

Best regards,

Tyler
888-308-6007

revived · 06-09-2015, 04:36 PM

Quote:

Originally Posted by JDP Tyler

Go 275/40 up front and you'll be good with those rear sizes.

Best regards,

Tyler
888-308-6007

Tyler, I know the 275/40/20 is a good size as far as height I ran it before.

Im just wondering if a 275/35 is a option.

for example a nitto invo 275/35/20 and a 315/35/20 will mean a very close to 5% height difference... may throw off computer. have you seen this done yet?

JusticePete · 06-09-2015, 06:13 PM

Quote:

Originally Posted by revived

Tyler, I know the 275/40/20 is a good size as far as height I ran it before.

Im just wondering if a 275/35 is a option.

for example a nitto invo 275/35/20 and a 315/35/20 will mean a very close to 5% height difference... may throw off computer. have you seen this done yet?

In a Vette, it would be a 273/35 in front with a 315/30 in the rear. You are right at the limits of computer tolerance.

andrew5117 · 06-09-2015, 07:22 PM

The rear are nitto extreme drags 305/35r20 and the fronts are 255/35zr20 nitto nt555 the new rims are still 20s like stock how much smaller do I need to go to get my stability track mode to work

Eric Baker · 06-09-2015, 07:46 PM

The rear is the right size, but the front needs to be a higher profile(the middle number). With that width(255), you should have a 45 profile, the 35 is too small making the outer diameter too small and throwing the computer out of whack. That 255/35/20 tire is approximately 27", where it should be 29" to match the rear.

Homeless Man · 06-09-2015, 08:25 PM

Bam

http://www.camaro5.com/forums/showthread.php?t=62838

andrew5117 · 06-10-2015, 12:19 AM

OK I'll look into it thanks guys really appreciate all the help wish big O would have knew that

JDP Sales · 06-10-2015, 10:22 AM

Quote:

Originally Posted by revived

Tyler, I know the 275/40/20 is a good size as far as height I ran it before.

Im just wondering if a 275/35 is a option.

for example a nitto invo 275/35/20 and a 315/35/20 will mean a very close to 5% height difference... may throw off computer. have you seen this done yet?

As Pete said, you'll likely want to go with a 30 series sidewall in the rear with a 315 if you're going 275/35 up front.

Here is how tire sizing works:

275/40/20 for example

275 is the tread width measured in millimeters.
40 is 40% of the tread width (wider tire = taller sidewall if the ratio is not changed)
20 is the wheel diameter.

So when you go wider, you have to drop the aspect ratio of the sidewall profile to keep the sidewall the same height.

Here is a good Tire Size Calculator for reference.

Best regards,

Tyler
888-308-6007

CamaroCracka · 06-10-2015, 01:51 PM

Quote:

Originally Posted by andrew5117

OK I'll look into it thanks guys really appreciate all the help wish big O would have knew that

I have frequently found myself asking shops performance specific questions only to be met with blank stares or given a line of BS that is blatantly incorrect if not dangerous. You would think I would quit asking.

revived · 06-10-2015, 01:59 PM

Quote:

Originally Posted by JDP Tyler

As Pete said, you'll likely want to go with a 30 series sidewall in the rear with a 315 if you're going 275/35 up front.

Here is how tire sizing works:

275/40/20 for example

275 is the tread width measured in millimeters.
40 is 40% of the tread width (wider tire = taller sidewall if the ratio is not changed)
20 is the wheel diameter.

So when you go wider, you have to drop the aspect ratio of the sidewall profile to keep the sidewall the same height.

Here is a good Tire Size Calculator for reference.

Best regards,

Tyler
888-308-6007

thanks,

I decided on a 245/40 (20x9) and 315/35 (20x10.5) nitto invo.

06-09-2015, 03:49 PM	#16
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 2,729	not as long as they are the same height. __________________ 2010 SS - On3 kit with downpipe cutout, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1/1LE brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. ZL1 brakes.

06-09-2015, 04:06 PM	#17
streetyme Drives: 2016 2SS nav mag ride npp a8 Join Date: Jul 2013 Location: St Louis Posts: 202	I am running 305 35 20 in the back and 275 40 20 in the front with no issues.. __________________ 2016 2SS A8 mag ride npp exhaust nav sunroof Rotofab CAI Borla Atak NPP Corsa X pipe BBS CHR Extreme Contactsport 2.9 Whipple Elite catch can Rotofab Juiced Motorsports installed by STG Motorsports JMS Fuel Maxx tuned by Gregs Tuning Operation Weld Laguna 17x10 18x5 2006 mustang gt Magnuson Livernois stage 2 heads stage 2 blower cams dynatech headers 4.10's Circle D convertor 533/511bs) (9.8lbs)

06-09-2015, 04:10 PM	#18
revived Vrrrm. Drives: 2011 2SS/RS LS3 Join Date: Jun 2013 Location: MA Posts: 1,495	you really need to look at your full tire size to really know. ex. 305/35/20 I want to run a 20x9 on 275/35 & 20x10.5 on 295/35 or 305/35 but I really don't know if its possible as nobody has tried it. __________________

06-10-2015, 12:19 AM	#25
andrew5117 Drives: 2010 2ssrs Join Date: Jun 2015 Location: Nebraska Posts: 5	OK I'll look into it thanks guys really appreciate all the help wish big O would have knew that Last edited by andrew5117; 06-10-2015 at 02:31 AM.

06-09-2015, 03:20 PM	#15
BamaRocker Drives: 45th Anniversary owner and 72 Camar Join Date: Apr 2014 Location: Meridianville, ala Posts: 75	i just ordered 10.5 rims all 4 corners and 275/305..will this be an issue..

06-09-2015, 07:22 PM	#22
andrew5117 Drives: 2010 2ssrs Join Date: Jun 2015 Location: Nebraska Posts: 5	The rear are nitto extreme drags 305/35r20 and the fronts are 255/35zr20 nitto nt555 the new rims are still 20s like stock how much smaller do I need to go to get my stability track mode to work

06-09-2015, 07:46 PM	#23
Eric Baker Drives: Black/Black 2SS/RS 6M Join Date: Mar 2010 Location: Boston MA Posts: 987 View My Garage	The rear is the right size, but the front needs to be a higher profile(the middle number). With that width(255), you should have a 45 profile, the 35 is too small making the outer diameter too small and throwing the computer out of whack. That 255/35/20 tire is approximately 27", where it should be 29" to match the rear.

06-09-2015, 08:25 PM	#24
Homeless Man Homeless Life Chose Me Drives: LS3 (sold 4/21) Join Date: Nov 2014 Location: Streets of Philly Posts: 3,650	Bam http://www.camaro5.com/forums/showthread.php?t=62838