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Old 04/14/2017, 10:08 AM   #1
BigJim
 
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17 Inch Wheel Measurements

I am thinking about replacing the 14 inch wheels on our 68. I've been thinking about going with low profile 17's. Has anyone gone this route? Can you post some pics? Also what are the rim measurements if I go with 17 inch rims?

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BigJim
'68 GT/CS, Presidential Blue, Numbers Matching, J-Code, C-4
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Old 04/14/2017, 11:00 AM   #2
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I think that is too big of a rim on a older car. The ride on a older car was not only determined by the suspension but also the side wall of the tires. New car suspension is much more capable of smoothing the ride with the low profile tires.
If you are going to track the car and have no concern about the ride it will work.
Marty

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Old 04/14/2017, 03:51 PM   #3
robert campbell
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+1 to Marty! I would never go over 15 inch myself because I am an old geezer. There are some 16 inch selections that could work. Any tire over 25 inches in diameter starts trouble with the fender openings unless you jack it up like a 4 x 4!

Personally I like a lowered look that has tires that work in the wheel wheels and not rub.






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Old 04/15/2017, 09:09 AM   #4
jokerhill
 

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http://www.mustangandfords.com/how-t...ge-wheels-fit/
http://www.mustangandfords.com/how-t...mustang-wheel/
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Old 04/15/2017, 09:11 AM   #5
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https://www.wheel-size.com/size/ford/mustang/1968/
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Old 04/15/2017, 09:15 AM   #6
robert campbell
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Great articles. Again, as Marty said, I think the lower profile tires will hurt the ride. But if that is not a concern these articles show you some bigger wheel possibilities. All about the backspacing and the diameter of the tire.

Rob
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Old 04/15/2017, 10:53 AM   #7
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Man Rob your black car looks like a beast just sitting there waiting for a unsuspecting Chevy!

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Old 04/15/2017, 03:36 PM   #8
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Mine came with 17" Shelby Cobras with 225/45R17's. Not sure of the width or offset. Not a big fan of the rims but I think size works fine and they do ride a little rough. I am going to try the bullitt rims from my 94 GT with 245/45R17's. If the tires aren't too wide I think it will look a lot better and benefit from the larger side wall.





Last edited by Toy68CS; 04/16/2017 at 12:28 PM..

Bruce Wertman
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Old 05/11/2017, 11:55 AM   #9
harryz
 

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Does anyone know if the "shelby mod" (lowering the upper a-arm mounting point) makes a difference with wheel / tire sizing?

Harry Z

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Old 05/15/2017, 09:06 AM   #10
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As long as you maintain the same outside tire diameter, which means less and less sidewall diameter as you increase wheel diameter, you should be fine. Changing the offset or tire width may cause rubbing with any wheel tire combo on the fender or frame rail, depending on which way you change it. Same problem if you increase the outside tire diameter.

Steve

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