Vintage Mustang Forums banner

1 - 20 of 38 Posts

·
Registered
Joined
·
166 Posts
Discussion Starter #1
Ok, so I am looking at selling and swapping out the wheels on my wifes 69. Getting rid of the old GT steel wheels and looking for a set of possibly used Magnum 500s.

Here is the question. Altho I cannot confirm I believe the car to be generally stock condition. That being said, with wheels that are 14x6 in front and 14x7 in the back, what would be the max tire width before you have rubbing issues both for front and back? Would a 215/70/14 tire work without a prob?

Currently the car has 195/70/14 tires all the way around, and was told the GT rims are 14x6.

Thanks guys
 

·
Registered
Joined
·
4,980 Posts
I Had 245/60 on 14x7 rims on my 70 at one time. had no issues
since have 235/60 on all 4
 

·
Registered
Joined
·
22 Posts
Why not upgrade to 15's since 14 inch tires are getting harder to find. I run 15x8 wheels with 275/60 in the rear and 245/60 in the front. They rub a little.
 

·
Registered
Joined
·
166 Posts
Discussion Starter #5
Novel idea, measure how much open space there is now :rolleyes:
Thanks. Only issue is Idont have the rims that the new tires will be going on, and since they may have different backspacing and likely will sit differently, and the rear wheel will be bigger than what is on now, I just wanted to ask.

:rolleyes:
 

·
Registered
Joined
·
166 Posts
Discussion Starter #6
Why not upgrade to 15's since 14 inch tires are getting harder to find. I run 15x8 wheels with 275/60 in the rear and 245/60 in the front. They rub a little.
I seem to be able to find them ok. I think with all the cars out there with 14 inch rims I am not too worried about them going away. Plus honestly and the bigger reason is I am working on buying a used set for less than a new set, good condition, and they are 14. Will save a lot over new tho.
 

·
Registered
Joined
·
166 Posts
Discussion Starter #7
With the 15 inch rims, if you ran something narrower than 245 would it rub?

If i dont get the 14 inch used ones I am likely looking at buying new, and then I could get 15 inch, but again, my main concern is I dont want it to rub at all. Just not good to have it do that. More than likely I would put 15 x7s on all. 15x8 possibly in back but I would be concerned with that rim width about the tire contacting the car as you mentioned.
 

·
Registered
Joined
·
738 Posts
To maximize room for larger tires, consider beating inner fender well weld flange back and out of the way. I did this on my 70 and probably increased clearance in spots about 3/4". Also roll the fender lip under to prevent clearance issues there. Larger wheels not only increase the available selection of tires, also makes room for larger brakes if you desire.

Although this does not apply as you have the stock leaf springs, on my 70 Mach 1 restomod, I am running a 18x10 with a 285/35 tire in the rear at the moment. I went conservative with the first set of rear tires and will go with a 295/35 the next time around. I can do this only because the car now has a 4-link with coil overs which add about another inch of clearance.
I had a Factory Five Cobra with 17 inch wheels. The performance tire selection for wider 17 inch tires has been dwindling for a quite a while. I chose 18 wheels for my restomod for brake clearance and a wider choice of manufacturers and tire performance levels.

BTW, the Magnum 500 are one of the best looking wheels for the 69 and 70s. If you like larger wheels, there are a number of manufacturers that make 17 inch replicas.
 

·
Registered
Joined
·
41 Posts
To maximize room for larger tires, consider beating inner fender well weld flange back and out of the way. I did this on my 70 and probably increased clearance in spots about 3/4". Also roll the fender lip under to prevent clearance issues there. Larger wheels not only increase the available selection of tires, also makes room for larger brakes if you desire.

Although this does not apply as you have the stock leaf springs, on my 70 Mach 1 restomod, I am running a 18x10 with a 285/35 tire in the rear at the moment. I went conservative with the first set of rear tires and will go with a 295/35 the next time around. I can do this only because the car now has a 4-link with coil overs which add about another inch of clearance.
I had a Factory Five Cobra with 17 inch wheels. The performance tire selection for wider 17 inch tires has been dwindling for a quite a while. I chose 18 wheels for my restomod for brake clearance and a wider choice of manufacturers and tire performance levels.

BTW, the Magnum 500 are one of the best looking wheels for the 69 and 70s. If you like larger wheels, there are a number of manufacturers that make 17 inch replicas.
I agree with rolling your fenders for maximum room. I have 275/35 r18 on my rear and it rubs when the rear flexes.
 

·
Registered
Joined
·
2,866 Posts
Bishop, you're thinking much too small. I have 235/60/14s on the front on steel 14 x 7 wheels. Lots of room. Have 275/60/15s on the back on 15 x 7 Torino steel wheels that have LOTS of backspace. Fits without rubbing, in a 69 fastback body. LSG
 

·
Registered
Joined
·
722 Posts
This should get a rise out of some people- according to Barnett468 who has restored many many Stangs, 235/60-15 will be the widest you can put on front without them hitting slightly under some conditions. The wheels need to be 15x7 with a 4.25 backspace. Barnett is shall we say "opinionated" and some disagree with him. I don't know if it matters, but he was specifically referring to 69s.
 

·
Registered
Joined
·
2,777 Posts
I have 255s on the front of my 65 and I know you 67 and later Mustang guys have more room than I do so 235s?...baahhhhh!

Disclaimer...some improvements required!
 

·
Registered
Joined
·
166 Posts
Discussion Starter #13
Ok, so didnt get the used ones, ended up getting new.

Got coker 15x7 for fronts, and 15x8 for backs.

Based on all my research, to not get rubbing or issues, I am planning on going 215/65/15 up front and 245/60/15 for back.

I have been communicating with someone who is using a similar setup but 255s in back and he ssid I may need to get a spacer for leaf springs. Saying its possible to have a clearance issue.

With the wheels and tires I mentioned should I have an issue? Or should this work just right?

Do I need to adjust any tire sizes?

Thanks.
 

·
Registered
Joined
·
166 Posts
Discussion Starter #18
Ok, so here is what I did, and where I am at. After a ton of research (which I realize now may not have helped this) I endes up getting the following setup.

15x7 in front
15x8 in back

215/65/15 in front
235/60/15 in back.

Pictures are posted below.

All seemed good driving back, until in a tight spot and I had to turn hard right, and then i heard that awful noise. I thought i checked them, and they seemed to have clearance, but hard right hits as shows in pictures. Hard left, which i did to get out of the place that mounted tires worked great.

Upon closer inspection, this may have been inevitable. It appears, at least to me and I will let experts chime in, that the driver side fender is not in proper alignment and therefore too far back. I am also posting a pic of the front fenders where they meet hood for reference.

I dont particularly want or think I should have to go down in tire size, so I think I am probably left with moving that fender forward a half inch to get the clearance needed. I realize that a lot has to be done to do that, so I will make it a project weekend, but what do other think?

I guess always taking left turns is an option, but maybe at the lower part of my options list.

I was so bummed when this happened. I thought I go thru i clean with no issues.

Waiting for wife to pick center caps.
 

Attachments

·
Registered
Joined
·
2,571 Posts
I’d move the fender forward like you mentioned.
I have 235/60r15 on the fronts with a 7 inch rim and 3.75 backspace. 255/60r15 on the back with an 8 inch rim and 4.75 backspace without issues. If I had to do it again I’d go with 4 inch backspace in the front and 5 in the rear. I’m surprised your hitting with the tire you have, those magnums typically have a 4,25 backspacing, and I’ve run those before with a 235/60 tire in the front. Although a friend has Magnums with the 235/60 and his rubs in reverse on the drivers side......
 
1 - 20 of 38 Posts
Top