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Old 12-22-2014, 02:08 PM   #1
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Biggest tire I can go?

Hi guys,
I was wondering as for the stock track pack wheels that I hear are 19x9.
What is the widest tire I can fit on these stock rims?
I hear people saying I can go 285 on these rims but I am not entirely sure.

Thanks in advance guys!


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Old 12-22-2014, 02:10 PM   #2
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I wouldn't go over a 275 on a 9"

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Old 12-22-2014, 02:23 PM   #3
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I wouldn't go over a 275 on a 9"

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So 275 would be okay on the 9s
But would I have to recalibrate my speedometer?


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Old 12-22-2014, 02:26 PM   #4
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If the overall height is different from stock then yes your speed will be off.

yes it will be fine. I ran 275 ' s on the front of my roush on a 9"

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Old 12-22-2014, 02:29 PM   #5
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If the overall height is different from stock then yes your speed will be off.

yes it will be fine. I ran 275 ' s on the front of my roush on a 9"

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Thanks man! Appreciate it!


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Old 12-22-2014, 02:37 PM   #6
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Quote:
Originally Posted by Black302Alex View Post
Hi guys,
I was wondering as for the stock track pack wheels that I hear are 19x9.
What is the widest tire I can fit on these stock rims?
I hear people saying I can go 285 on these rims but I am not entirely sure.

Thanks in advance guys!


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Originally Posted by Rapinator126 View Post
I wouldn't go over a 275 on a 9"

Hey Alex, I completely agree with Rap above here ^. I think a 275 would be more then enough on a 9" wheel. What are you planning on doing with this car? Are you building it towards more of a daily driver, or maybe a track car? Let me know and I can shoot over a few tire recommendations!


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Old 12-22-2014, 02:42 PM   #7
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Hey Alex, I completely agree with Rap above here ^. I think a 275 would be more then enough on a 9" wheel. What are you planning on doing with this car? Are you building it towards more of a daily driver, or maybe a track car? Let me know and I can shoot over a few tire recommendations!





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Well as i am just out of high school, my budget is limited as I have my beautiful coyote to pay for lol.
Anyway, as of right now I have borla s types, JBA after cat h pipe, and hurst short throw.
And I want my next investment to be wheels and tires with 275 up front and 305 in the rear.
I do want to daily drive this car as it is my only car haha


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Old 12-22-2014, 02:46 PM   #8
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Subscribed. Just curious why running 285 on a 9" rim would be a bad idea? Fitment issue? Rough ride? Speedo off? I read on Mickey Thompsons page that their 285-35-19 are good for 8.5-10" wheel.
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Old 12-22-2014, 02:57 PM   #9
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Fitment, a 285 is over 11" wide. Will not fit correctly on a 9" wide wheel

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Old 12-22-2014, 04:34 PM   #10
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Biggest tire I can go?

My 275s bulge a little on my 9". Going 265 next which should be perfect.

There is such a thing as too wide of a tire on a wheel. Too much on a small wheel and you lose contact patch, same concept as stretching tires, it's just going the opposite way.

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Old 12-23-2014, 08:46 AM   #11
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Quote:
Originally Posted by Black302Alex View Post
Well as i am just out of high school, my budget is limited as I have my beautiful coyote to pay for lol.
Anyway, as of right now I have borla s types, JBA after cat h pipe, and hurst short throw.
And I want my next investment to be wheels and tires with 275 up front and 305 in the rear.
I do want to daily drive this car as it is my only car haha


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The stock Pirelli compunds these cars use is really bad. In addition to wheels/tires, you will want to work on your suspension and I would trash the Hurst for the new MGW Race Spec shifter. Look it up if you haven't already.

As far as tires, a 265 is perfect for a 9" rim. Remember, wider does not equal better, too wide and your ride suffers and you'll get tramalining too. A 255 will be about flush, a 265 will bulge a little and a 275 will bulge a lot. 285 will be kinda big but it all depends on the brand too, some brands run real narrow and I'd be willing to bet a Nitto would fit fine as a 285. There are much better brands than Nitto out there honestly unless you are going for the straight up drag radial NT05 type which I'm guessing no since the car is a DD. Look into Mickey Thompson Street Comps or BFG Comp tires. If you need all seasons, get Continental ProContacts.
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Old 12-23-2014, 01:56 PM   #12
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I personally ran 285 BFG's on my 18X8.5's for years with no issues.
You will find different brands are different sizes despite what it says on the side.
Certain tires seem to run wide while others tend to run narrow.
An old school rule of thumb was Tire tread (not overall width) should fall within 1" either wider or narrower than the rim size. That will get you close.
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Old 12-23-2014, 04:33 PM   #13
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i would stay away from conti's. i had a set of extreme contacts for a year and couldn't wait to get rid of them. they were as thin as balloons and was constantly patching nail and screw holes. put a set of off brands on a year ago and i haven't patched a one of them. i probably just jinxed myself
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Old 12-23-2014, 07:32 PM   #14
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wheel size + 1.5 inch x 25.4mm per inch = max tire size

8.0" wheel + 1.5 inch = 245 max tire size

8.5" + 1.5 inch = 255
9.0" + 1.5 inch = 265
9.5" + 1.5 inch = 285
10.0 + 1.5 inch = 295
10.5 + 1.5 inch = 305
11.0 + 1.5 inch = 315

The sizes above are really about the max you want to put on the respective tires. The #'s are rounded to closest tire size. As others have said some manufacturer's actual tire sizes vary a little, but I think the above #'s give you a very good rule of thumb.

Stock wheels are generally about -10mm from the above "max" sizes.

Ex:
OEM Premium 19" 5 star wheels are 8.5" and they come with 245's on them.
Brembo 19" wheels are 9" wide and they put 255's on them.
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Old 12-23-2014, 09:27 PM   #15
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Quote:
Originally Posted by c_rizzle View Post
wheel size + 1.5 inch x 25.4mm per inch = max tire size

8.0" wheel + 1.5 inch = 245 max tire size

8.5" + 1.5 inch = 255
9.0" + 1.5 inch = 265
9.5" + 1.5 inch = 285
10.0 + 1.5 inch = 295
10.5 + 1.5 inch = 305
11.0 + 1.5 inch = 315

The sizes above are really about the max you want to put on the respective tires. The #'s are rounded to closest tire size. As others have said some manufacturer's actual tire sizes vary a little, but I think the above #'s give you a very good rule of thumb.

Stock wheels are generally about -10mm from the above "max" sizes.

Ex:
OEM Premium 19" 5 star wheels are 8.5" and they come with 245's on them.
Brembo 19" wheels are 9" wide and they put 255's on them.

Your calculation comes up with a 215 on a stock 7" rim. I think 7" is the stock size rim on 2012 V6, and is already wrapped with a 215/65. I was hoping a 235/60 would fit and look decent.


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Old 12-23-2014, 11:23 PM   #16
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Quote:
Originally Posted by c_rizzle View Post
wheel size + 1.5 inch x 25.4mm per inch = max tire size

8.0" wheel + 1.5 inch = 245 max tire size

8.5" + 1.5 inch = 255
9.0" + 1.5 inch = 265
9.5" + 1.5 inch = 285
10.0 + 1.5 inch = 295
10.5 + 1.5 inch = 305
11.0 + 1.5 inch = 315

The sizes above are really about the max you want to put on the respective tires. The #'s are rounded to closest tire size. As others have said some manufacturer's actual tire sizes vary a little, but I think the above #'s give you a very good rule of thumb.

Stock wheels are generally about -10mm from the above "max" sizes.

Ex:
OEM Premium 19" 5 star wheels are 8.5" and they come with 245's on them.
Brembo 19" wheels are 9" wide and they put 255's on them.
Those are VERY conservative estamates...in real life you can go bigger and it and works very well.
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Old 12-23-2014, 11:35 PM   #17
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Those are VERY conservative estamates...in real life you can go bigger and it and works very well.

Depends on the scenario. Drag racing it's more tolerable. Autocross or road racing you really gotta be right on the money with tire fitment.


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Old 12-24-2014, 12:04 AM   #18
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Originally Posted by Soccerluvr4 View Post
Depends on the scenario. Drag racing it's more tolerable. Autocross or road racing you really gotta be right on the money with tire fitment.


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Well aware of the dynamics...
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Old 12-24-2014, 12:06 AM   #19
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Well aware of the dynamics...

Oh im sure you do. That was directed more in general.


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Old 12-25-2014, 01:44 AM   #20
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Those are VERY conservative estamates...in real life you can go bigger and it and works very well.
Those were meant as safe #'s, that you should be able to buy and have them definitely work. There are exceptions to every rule. You can try larger, see if they fit. It depends on the brand tire, but if you do go bigger than my rule of thumb you'll be a guinea pig and experimenting with appearance, fit, performance, etc. It might look ok, but b/c the tire is really to big your performance may suffer.
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Old 12-27-2014, 07:55 PM   #21
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Would a 315 tire fit in the rear without shaving or pulling the fender?


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Old 12-27-2014, 08:54 PM   #22
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Would a 315 tire fit in the rear without shaving or pulling the fender?


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Yes it will


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Old 12-29-2014, 10:36 AM   #23
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Would a 315 tire fit in the rear without shaving or pulling the fender?
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Originally Posted by Soccerluvr4 View Post
Yes it will
Not necessarily. You need enough offset. Too little offset & it might not fit.

So yes, it can fit if you have the correct offset, fitting it perfectly between fender and suspension. Most likely to occur if you have an 11" rim.

No, it might not fit if you try putting it on a smaller than 11" rim, that is likely meant to be near flush with a smaller width tire.
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Old 12-29-2014, 11:39 AM   #24
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Pretty much every 10.5" rear wheel you'll get from a Mustang site like CJP/LRM/AM will be correct for all 94-04 cars to run a 315. Although not all 315s are created equal. Sumis and Nittos run way narrow, some run big. I personally think that a big 275 or regular 295 on a 10" wide rear rim is perfect.
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Old 12-29-2014, 06:49 PM   #25
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Pretty much every 10.5" rear wheel you'll get from a Mustang site like CJP/LRM/AM will be correct for all 94-04 cars to run a 315. Although not all 315s are created equal. Sumis and Nittos run way narrow, some run big. I personally think that a big 275 or regular 295 on a 10" wide rear rim is perfect.
Yeah, I have 285's on 9.5" rim and I'm kind of wishing I had like 295's on 10".... (just about 1/2 more).
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Old 12-29-2014, 07:00 PM   #26
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Yeah, I'm kind of wishing I had just about 1/2" more.
That's what she said....
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Old 12-30-2014, 06:47 AM   #27
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Zing!
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Old 12-30-2014, 12:31 PM   #28
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That's what she said....
LOL!
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