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cphsonic

Thanks to Streetking: 69 max rubber

By cphsonic, in 1969-70 Technical Forum

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cphsonic    11

cphsonic
Posted

Just to share the info: inspired by Streetkings immaculate black 69 Sportsroof (http://www.1969stang.com/mustang/forum/showthread.php?t=2301&highlight=streetking), I got his exact wheel setup and duplicated it (almost, I have a different front end). His setup is:

* Front is 245/40R18 on a 18x8.5" wheel with 5.375" backspacing

* Rear is 295/35R18 on a 18x10" wheel with 6.375" backspacing

Rolled fender lips and a bit massaging on rear inner fender well.

 

I got the set of FR500 wheels I have wanted since I first saw them, with almost the same setup:

* Front 18x9" with 5,85" backspace, cut, narrowed 1" and welded back together to make a 18x8". Rubber is 245/40R18.

* Rear is a 18x10" with 6.38" backspace and a 295/35R18 tyre.

No rolled lips but I did have to get the 2lb hammer out to massage a 4x2" area on the inner fender wells. Nothing drastic.

 

This is what it looks like (still need to go 1" lower in the rear):

 

2007_0815_192354.JPG

 

2007_0815_200941.JPG

 

2007_0815_201018.JPG

 

Also posted this on Stangnet. Exact copy - no need to read both.

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70-DropTop    12

70-DropTop
Posted

Damn, that looks good! I was using SK's ride as an example to check my wheels. I'll be essentially the same thing with my wheels. I have Ford Racing 2000 Cobra R's that will be going on my vert.

 

They measure 18x9.5 with 6.12 backspacing. From looking at your and SK's ride, they should do just fine out back.

 

Now, I planned to narrow two of them by 1.5". That'll give me 18x8 with 4.62 backspacing. Everything I've read says that'll work just fine. It's practically 4.5", which most I've seen recommend.

 

Thanks!

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Burn    14

Burn
Posted

The whole car looks really cool. How low have you gone in the front and rear so far?

I also never thought about having a rim cut in half and shortened to achieve the ideal width and backspacing. This really gives me more options now for my setup.

What does it cost to have two wheels shortened? Do you have to have the backspacing reduced by 1", including the wheel or can you leave the BS and reduce just the wheel width?

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1BAD351    21

1BAD351
Posted

sweet, next set of wheel I get im going to get some nice big tires all around. I mean i have 295's on my car now with a 3.5" backspacing... ok so my tires dont even fit in the wheel well lol

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cphsonic    11

cphsonic
Posted
The whole car looks really cool. How low have you gone in the front and rear so far?

 

I also never thought about having a rim cut in half and shortened to achieve the ideal width and backspacing. This really gives me more options now for my setup.

 

What does it cost to have two wheels shortened? Do you have to have the backspacing reduced by 1", including the wheel or can you leave the BS and reduce just the wheel width?

 

 

Thx! I'd say 2-3 inches lowered in the front and 1½ in the back? I'm not really sure because I dont have the original measurements...

 

The sectioning of the wheel is done on the inside => 1" narrowing will reduce BS with 1" too. To keep the BS while narrowing, you'd have to take the material from the outside witch most rims don't have the material for.

 

I' payed around $185 a piece for the work, but that's over here in euro-land with our high costs of everything. :chris: Add the cost of the wheel, shipping to Denmark, import taxes etc, but I wanted FR500's VERY bad!

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70-DropTop    12

70-DropTop
Posted
Thx! I'd say 2-3 inches lowered in the front and 1½ in the back? I'm not really sure because I dont have the original measurements...

 

What suspension package are you running...maybe that'll help us understand how much lower it is from stock (what leafs and eye location...lowering springs with coils cut?).

 

What does it cost to have two wheels shortened? Do you have to have the backspacing reduced by 1", including the wheel or can you leave the BS and reduce just the wheel width?

 

The only place most wheels allow any modification (widen or narrow) is behind the spokes...doing that will always affect backspacing. If you go wider and don't want the increased backspace, use a spacer. The extent at which a wheel can be narrowed is determined by the wheel's cross section geometry (is there a long enough flat stretch). My understanding is that they can widen about anything.

 

As for price, I've been quoted $150/wheel to narrow mine by the shop that did BIG-MAC's (from Stangnet). They do quality work and they're in Michigan (I'm in Ohio). That'll work well for me. I'll be taking mine there sometime before next summer.

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cphsonic    11

cphsonic
Posted
What suspension package are you running...maybe that'll help us understand how much lower it is from stock (what leafs and eye location...lowering springs with coils cut?).

 

 

About the only thing I don't have info on is what the coils are. Installed by previous owner, I'd say they are 620ties by the feel of them and they are not cut.

Global West uppers and lowers (boxed), SPAX gas shocks.

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Grabber70Mach    107

Grabber70Mach
Posted

On your rear tires did you have to do anything with the axle snubbers that are mounted to the rear frame rails? What about the fuel line that runs on the drivers side up the frame rail just below the inner fender well? Is their enough clearance or did you have to redo it?

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MDinDestin    14

MDinDestin
Posted
The sectioning of the wheel is done on the inside => 1" narrowing will reduce BS with 1" too.

 

It looks great - good job.

 

It appears you ended up with 4.85" of BS on the front. Is there much room on the front for more backspacing like SK has?

 

MD

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cphsonic    11

cphsonic
Posted
It looks great - good job.

 

It appears you ended up with 4.85" of BS on the front. Is there much room on the front for more backspacing like SK has?

 

MD

 

Thx. Yeah, it would seem that a 8.5" width would have been just fine with the BS to match, without hitting the edge on my Global West upper arm. I just didn't see the point with a 245 tire...

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Angel    24

Angel
Posted

Off topic. But i saw the pics of your interior and i love those seats. where did you get them? not that i want to copy them but i was wondering if they're after market or off of another car. maybe from euro?

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Angel    24

Angel
Posted

Off topic. But i saw the pics of your interior and i love those seats. where did you get them? not that i want to copy them but i was wondering if they're after market or off of another car. maybe from euro?

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stangme428    33

stangme428
Posted

wow.... really like the MONZA B94/30

... only @ 701.00 us :tongue_smilie:

 

like those B11R's also... but a little out of my price range...lol

 

Been looking for some Pantera / De Tomaso 351C tall valve covers to clear roller rockers .. would be nice to have the De Tomaso seats also....:punk:

 

Italian, and they are really nice. Both quality and fit.

Check them out here, mine are the B11R:

http://www.bf-torino.de/BF-Sitze/bf-sitze.html

 

...and its all in german on the site :whistling: Prices are Euro of course.

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