93' cobra wheels, max width tire?

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xplo89gt

Founding Member

Jul 14, 1999

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Boston, MA

Feb 19, 2004

#1

• Feb 19, 2004

• #1

I have 93 cobra wheels. Which I believe are 17x7.5. Looking to get new rear tires and want to put the biggest tires on them. I want maximum contact area, so obviously I'm not going to try to put too big of a tire on there. I have a 245/45/17 on there now, and I'm just wondering if a 255 would work or should I stick with 245?

Also while i'm on the subject of 93 cobra wheels. What can I do to the front so they don't rub when doing a full turn? I'm planning on upgrading front brakes soon, so I would like to consider things that would help it not rub as well as best braking.

 

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punkrockracer

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Mar 5, 2003

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Feb 19, 2004

#2

• Feb 19, 2004

• #2

xplo89gt said:

I have 93 cobra wheels. Which I believe are 17x7.5. Looking to get new rear tires and want to put the biggest tires on them. I want maximum contact area, so obviously I'm not going to try to put too big of a tire on there. I have a 245/45/17 on there now, and I'm just wondering if a 255 would work or should I stick with 245?

Also while i'm on the subject of 93 cobra wheels. What can I do to the front so they don't rub when doing a full turn? I'm planning on upgrading front brakes soon, so I would like to consider things that would help it not rub as well as best braking.

Click to expand...

I've got 255/45 17's on the back and they fit well, but they do rub if I take a hard corner. just out of curiosity, how did you mount your wheels? Did you use a spacer? My front wheels rub as well, I just sort of ignore it

 

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xplo89gt

Founding Member

Jul 14, 1999

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Feb 19, 2004

#3

• Feb 19, 2004

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Nope no spacer. I have just been ignoring it. Guess ill just stick with 245's in the rear. Someone told me if you have 93 cobra rotors it wont rub. Not entirely sure.

 

Lefty44278

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Jun 19, 2003

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Detroit, Michigan

Feb 19, 2004

#4

• Feb 19, 2004

• #4

The 93 cobra spindles stick out further than a regular fox. I have the same issue with rubbing while turning and i use spacers too. Matt90Gt's website might tell you which spindles to run with these wheels.

http://mjbobbitt.home.comcast.net/index.html

 

BlownStangGT

REPEAT

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Jan 22, 2002

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#5

• Feb 19, 2004

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I have seen people with 275's on them in the rear no problem at all

 

Michael Yount

Mustang Master

Apr 10, 2002

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Charlotte, NC

Feb 19, 2004

#6

• Feb 19, 2004

• #6

If you want the full tread to maintain good contact with the road, a good rule of thumb is to have the section width of the tire not any more than 2" wider than the wheel width. 7.5" + 2" = 9.5". 9.5" is 241 mm (25.4 mm/in). The first number in the tire size is the section width. So a 245 is about as wide as you'd want to go with a 7.5" wheel while allowing the tread to remain in full contact.

 

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speedstang91

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Mar 3, 2006

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Southern NJ

Mar 12, 2006

#7

• Mar 12, 2006

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I had Original 93 cobra wheels on my old '89 gt vert. They rubbed at first and then I got my musatng shop to notch out the lowere a-arm to prevent rubbing at full tilt. It is only a small piece so I'm pretty sure there were no issues of less strength or I'm sure the guy wouldn't have done it.

 

stang8urimport

Autozone Junkie

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Jun 21, 2002

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Mar 12, 2006

#8

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I would sell your original 93 Cobra wheels and buy 3 sets of Replica's. As already mentioned, the wheels are made for the 93 Cobra, and not any other Fox. The 93 Cobra has a wider track. These wheels will stick in more and cause rubbing problems. www.wheelreplicas.com Jeff is a great guy. Give him a call and get the wheels that look IDENTICAL and will have the CORRECT offset and backspacing for a Fox body Mustang (minus the 93 Cobra). I have a set and they fit like a GLOVE!!

View attachment 483996

Nick

 

Georgia Snake

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Mar 5, 2002

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Columbus GA

Dec 19, 2010

#9

• Dec 19, 2010

• #9

Speaking of Cobra

For yall's consideration...I have 255/45-17's all around on mine and no issues. Pics attached or see my garage

 

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Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Massachusetts

Dec 19, 2010

#10

• Dec 19, 2010

• #10

If they are original offset 1993 cobra wheels, just buy 1993 cobra front rotors

They are the same rotors, but with a 0.75" taller hat. It's like running a spacer, but much safer. The rotors will work with stock spindles and calipers

Out back, you should use either a 3/4" spacer, or a thbird rear disk setup which pushes the wheels out 3/4" each side

 

Georgia Snake

New Member

Mar 5, 2002

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Columbus GA

Dec 19, 2010

#11

• Dec 19, 2010

• #11

Cobra Wheels

My wheels are original equipment and have been on the car since new

 

Cobra1741

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Mar 9, 2010

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Dec 19, 2010

#12

• Dec 19, 2010

• #12

i have a 93 cobra and run 245 45r17 on the front and 275 40r17 on the back.