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18x8.5 +35 Fitment for '14 v6

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Old Mar 10, 2020 | 04:42 PM
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18x8.5 +35 Fitment for '14 v6

Anyone out there who knows/own a '14 v6 that ran 18x8.5 +35 squared setup? Running completely stock brakes, suspension. Just want to know if I can fit the wheels without issues. Mainly just don't want poking issues.

Last edited by DeezStangs; Mar 10, 2020 at 04:45 PM.
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Old Mar 10, 2020 | 05:18 PM
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According to my offset calculator using my 42 offset 9 inch wheel that I know fit you should be fine
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Old Mar 10, 2020 | 05:21 PM
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I like using this tool to test/compare wheel and tire sizes:
https://tiresize.com/wheel-offset-calculator/

IIRC, the stock 18" GT wheels are 18x8 +44 square setup and used a 235/50R18 Tire.

The difference of 44 vs 35 offset plus the increase of 1/2" width pushes the wheel out around 1/3" - 1/2". Tire size change adds to that (in both directions). If you go with a wider tire like a 255, that difference becomes close to 3/4".

I'm running a square setup of 19x9.5 +33 Offset with 275/40R19 Tires. They poke about 1/4" - 1/2" past the fenders but still look good. Stock ride height. In my case, the offset change plus width increase pushed the wheel & tire face 1.18" out from stock (and the increased width also means the inside is 1/3" closer to the inner body as well). I didn't want any poke, but oh well, it still looks good.




Last edited by VIP1; Mar 10, 2020 at 05:42 PM.
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Old Mar 10, 2020 | 05:38 PM
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Originally Posted by Siber Express
According to my offset calculator using my 42 offset 9 inch wheel that I know fit you should be fine
Thanks for that. See, after researching through pictures and posts, I figured it should be fine. But, I've yet to see anyone who actually posted a photo/post staying they were running it. Was just hoping someone who had the setup would show me a picture.
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Old Mar 10, 2020 | 09:02 PM
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Originally Posted by VIP1
I like using this tool to test/compare wheel and tire sizes:
https://tiresize.com/wheel-offset-calculator/

IIRC, the stock 18" GT wheels are 18x8 +44 square setup and used a 235/50R18 Tire.

The difference of 44 vs 35 offset plus the increase of 1/2" width pushes the wheel out around 1/3" - 1/2". Tire size change adds to that (in both directions). If you go with a wider tire like a 255, that difference becomes close to 3/4".

I'm running a square setup of 19x9.5 +33 Offset with 275/40R19 Tires. They poke about 1/4" - 1/2" past the fenders but still look good. Stock ride height. In my case, the offset change plus width increase pushed the wheel & tire face 1.18" out from stock (and the increased width also means the inside is 1/3" closer to the inner body as well). I didn't want any poke, but oh well, it still looks good.



THANK YOU. That's a perfect example of what I'm trying to find out. If it's poking that much, ehhh. Not bad. Again, thanks. Sweet looking wheels. Which are those? Also, cool tail lights. Haven't seen those yet.
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Old Mar 10, 2020 | 10:50 PM
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The Wheels are the RTR Tech 7 wheels:
https://www.americanmuscle.com/rtr-t...9x95-0514.html

The Tail Lights are Moromoto Tail Lights designed to look like the Ford GT
https://www.theretrofitsource.com/13...ANG?quantity=1
(Other companies sell them too for more money.)
They are fully LED and still sequence, but in circle instead of stripe.

Last edited by VIP1; Mar 10, 2020 at 10:57 PM.
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Old Mar 11, 2020 | 06:09 AM
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Originally Posted by DeezStangs
. . . I've yet to see anyone who actually posted a photo/post staying they were running it. Was just hoping someone who had the setup would show me a picture.
I doubt you are going to have any luck with that; it is an unusual sizing that probably was not designed for a Mustang and not commonly used on Mustangs

I think it will work out OK like the other guys said, but a wheel that was designed for Mustang would have a little more offset like 45 ish for 8.5" wide wheel
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Old Mar 24, 2020 | 01:33 PM
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Originally Posted by Bert
I doubt you are going to have any luck with that; it is an unusual sizing that probably was not designed for a Mustang and not commonly used on Mustangs

I think it will work out OK like the other guys said, but a wheel that was designed for Mustang would have a little more offset like 45 ish for 8.5" wide wheel
If that's the case, would there be potential issues, you think? I don't plan on lowering since the stock ride height saves my car from Hawaii's trash, pot hole ridden roads.
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Old Mar 24, 2020 | 06:10 PM
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From: s.il.
Any time you change the offset on a wheel from what the factory engineers specified you can expect consequences. Some are minimal and probably won't be noticed. Indeed the factory offset is itself a compromise as is just about everything people have ever engineered. To be more specific, moving the wheels out away from the vehicle's centerline which is what the smaller offset will do, does several things. It increases the car's track [ the distance between the centerline of each front or rear tire from each other ] , this helps cornering by reducing weight transfer for any given speed and at least potentially reducing body roll when cornering. This comes with a price. Besides increasing the possibility of fender rub as the wheel moves up when hitting bumps or cornering it also increases the scrub radius. There are a number of undesirable things that happen when the scrub radius is increased. The most noticeable thing is an increase in the tendency of the car to tramline ie. it wants to follow rain grooves or irregularities in the pavement. You can feel this in the steering wheel and it will generally be worse as the wheels and tires become wider. It also reduces the "effective" spring rate since moving the wheel out gives it more leverage to act against the spring. Basically the spring rate is unchanged, but the wheel rate is reduced. I am NOT saying you shouldn't ever change the offset from what the factory specified, only that it will be to your benefit to have a good understanding what the consequences are.
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