66 mustang coupe wheel and tire fitment - Vintage Mustang Forums
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post #1 of 11 (permalink) Old 11-03-2018, 12:30 PM Thread Starter
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66 mustang coupe wheel and tire fitment

I ordered a set of 15x8 wheels with pretty sure 5.33 backspacing with 225/50/15 toyo’s Was wondering if anyone has ran a 15x8 wheel up front on stock suspension? I also have coil spacers for up front if I need it. I’m also new to the forums so any help would be appreciated
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post #2 of 11 (permalink) Old 11-03-2018, 04:39 PM
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Welcome to VMF!
You should have asked here first as the '65 and '66 Mustangs will not accept extremely wide tires without modifications. And an 8" wide front wheel is nearly out of the question.

There are a bazillion threads on this website regarding tire & wheel fitment.
Good Luck.
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post #3 of 11 (permalink) Old 11-04-2018, 12:09 AM
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Iím going to have to say, NO GO. It will either rub the fender or ball joints on the upper control arms...or both.

Welcome to VMF.

Regards,
Patrick
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post #4 of 11 (permalink) Old 11-04-2018, 05:47 AM
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https://cdn.website.thryv.com/7fc8b0...Size-Chart.pdf
Please Don't use coil spring spacers A 15x8 wheel up front won't work unless you use flairs and cut the fender because of UCA interference
The good news is a 16x8x4.5 or 17x8x4.75 wheel will work
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post #5 of 11 (permalink) Old 11-04-2018, 06:41 AM
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Quote:
Originally Posted by 2nd 66 View Post
Please Don't use coil spring spacers A 15x8 wheel up front won't work unless you use flairs and cut the fender because of UCA interference
The good news is a 16x8x4.5 or 17x8x4.75 wheel will work
^ What he said... Found and removed those vermin on my front springs as I was fixing the real culprit on the car . ( 17x8 all the way around on mine).
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It's just a little rust...

1966 secretary special originally 6cyl 3 spd coupe.(Goes to work twice a week)
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post #6 of 11 (permalink) Old 01-09-2019, 10:11 AM
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I have always found the UCA is the biggest issue for the front. Like others have mentioned, going with 16's or 17's really helps. I have a 66 with 17x8 all around with 215's on the front. Mine are 4 7/8 backspace in front and I have plenty of room.
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post #7 of 11 (permalink) Old 01-09-2019, 01:23 PM
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Quote:
Originally Posted by 2nd 66 View Post
https://cdn.website.thryv.com/7fc8b0...Size-Chart.pdf
Please Don't use coil spring spacers A 15x8 wheel up front won't work unless you use flairs and cut the fender because of UCA interference
The good news is a 16x8x4.5 or 17x8x4.75 wheel will work
Well, this speeds up the process of choosing my new wheels! I've never seen this before, and it pretty much clears up any questions. @2nd 66 , Since you seem to also be pretty knowledgeable on wheels, do you see anything in this list that may need to be amended? I think I'm going 16x7 front, and 16x8 rear, but not sure on tire size yet. I'm thinking around 205 front, 225 rear will create the look I'm after.
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post #8 of 11 (permalink) Old 01-09-2019, 06:02 PM
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Originally Posted by jgrote View Post
Well, this speeds up the process of choosing my new wheels! I've never seen this before, and it pretty much clears up any questions. @2nd 66 , Since you seem to also be pretty knowledgeable on wheels, do you see anything in this list that may need to be amended? I think I'm going 16x7 front, and 16x8 rear, but not sure on tire size yet. I'm thinking around 205 front, 225 rear will create the look I'm after.
First and foremost these cars are all a bit different the production tolerance back in the day on body work was around 1/8"-1/4" Add 50 years to that and how your alignment is set up (camber -1.5, caster +4ish, toe +1/8") ,well
That said 16x8x4.5 with 225/50/16 is a pretty good fit I'm using 16x7x4.5 because I got the 1st set free,
these had 215/55/16 620 lowering springs and mid eye 4 leafs Explorer wheels

then and because they are the same size so I knew they would work and I REALLY liked the wheels I got these Ranger FX4 wheels 16x7x4.5 ,Now with 225/50/16 and UCA drop and 1/2 coil cut off 620's

Both sets of the 16x7 wheels I used with out an adapter but I do have my UCA trimmed back like this pic (not my car)

After doing some autocross I decided I wanted a wider track. theorizing the 16x7 wheel was 1" narrower than a 16x8 and having the same 4.5"BS I could move the wheels out some so after rollin n pullin the front fenders a little I use a 1" adapter now

Also of note a 17x8x4.75 with 225/45/17 is a slam dunk fit
but i find I like the extra track width with my 16's vs the lower profile of the 17's on autox daze
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Last edited by 2nd 66; 01-09-2019 at 06:06 PM.
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post #9 of 11 (permalink) Old 02-20-2019, 09:56 PM
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Brad is your fender to center of axle in the front at 12.5" or is it lower? I am at 12-5/8" and the pivot points of the lower control appear to be level with each other.
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66 coupe, '93 Fox seats, Three point belts, 289, Edelbrock, Weiand, JBA tri-y's, 2" duel exhaust (H-pipe), T5 trans(3.35), Pro 5.0 shifter, 3.40 open, KH front disc, Porterfield R4-S pads, 1" front sway bar, Shelby drop, Spring perch relocation, Shelby quick steer, GT progressive coils (1/2 coil cut), 4.5 leaf mid-eye, Bilstein street shocks, Export brace, Monti-Carlo bar, Sub-frame connectors, Performance alignment (+3.5 caster/-.5 camber), 16x7 wheels, 215/55/16 & 225/55/16 BFG G-force

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post #10 of 11 (permalink) Old 02-20-2019, 10:09 PM
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Originally Posted by Ponyboy View Post
Brad is your fender to center of axle in the front at 12.5" or is it lower? I am at 12-5/8" and the pivot points of the lower control appear to be level with each other.
Brad,right at 12"


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post #11 of 11 (permalink) Old 02-20-2019, 10:56 PM
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I like twelve! That's what she said
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66 coupe, '93 Fox seats, Three point belts, 289, Edelbrock, Weiand, JBA tri-y's, 2" duel exhaust (H-pipe), T5 trans(3.35), Pro 5.0 shifter, 3.40 open, KH front disc, Porterfield R4-S pads, 1" front sway bar, Shelby drop, Spring perch relocation, Shelby quick steer, GT progressive coils (1/2 coil cut), 4.5 leaf mid-eye, Bilstein street shocks, Export brace, Monti-Carlo bar, Sub-frame connectors, Performance alignment (+3.5 caster/-.5 camber), 16x7 wheels, 215/55/16 & 225/55/16 BFG G-force

Brad

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