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-   -   Will this offset fit? (http://www.focusfanatics.com/forum/showthread.php?t=308429)

dross03focus 02-05-2013 02:01 AM

Will this offset fit?
 
I am looking to buy a set of 17x7.5s for my 2004 SVT. Below are the specs, I just want to make sure they will fit correctly before I order. They are listed to fit a contour and escort, but Focus isn't listed.


Size
17 x 7.5
Offset
42
Hub Bore
72.6
Backspacing
5.9
Load Rating
1400

YellowJellyBean 02-05-2013 02:24 AM

You're fine with the offset, but I think you're going to want some hub rings. I'm pretty sure the Focus bore is smaller than 72.6.

dross03focus 02-05-2013 02:31 AM

Quote:

Originally Posted by YellowJellyBean (Post 4573272)
You're fine with the offset, but I think you're going to want some hub rings. I'm pretty sure the Focus bore is smaller than 72.6.

Thanks alot for your input. Ill look Into hub rings

TerryB 02-05-2013 03:08 AM

Stock center bore is 63.4mm. I use a larger center bore on my car. I've never used ring adapters. I just snug up each lug a little at a time and the wheel self centers. I've been doing that for 5 years with no problems.

YellowJellyBean 02-05-2013 04:41 AM

Quote:

Originally Posted by TerryB (Post 4573287)
Stock center bore is 63.4mm. I use a larger center bore on my car. I've never used ring adapters. I just snug up each lug a little at a time and the wheel self centers. I've been doing that for 5 years with no problems.

-Cue flame war over hub-centric vs. lug-centric-

I'm sure for most people's DDs it doesn't matter if their wheels are lug centric. From an engineering perspective, though, it makes a lot more sense to put that load on the bigger hub rather than put an increased cyclic stress on the significantly smaller lug nuts.

TerryB 02-05-2013 02:06 PM

Here's what you'll need if you want to go with the hubcentric rings.
http://www.ebay.com/itm/72-6-63-4-Me...-/360436362456

thenorm 02-05-2013 03:01 PM

Quote:

Originally Posted by YellowJellyBean (Post 4573312)
-Cue flame war over hub-centric vs. lug-centric-

I'm sure for most people's DDs it doesn't matter if their wheels are lug centric. From an engineering perspective, though, it makes a lot more sense to put that load on the bigger hub rather than put an increased cyclic stress on the significantly smaller lug nuts.

begin flame war!

the wheels vertical load is not carried by the hubcentric rings or the studs. The vertical load of the wheel is carried by the friction between the hub face and wheel. The studs are only loaded in tension, to provide this friction force. I calculated out once that each wheel has over 14000lbs friction force. ie. it would take 14000lbs load on a wheel to cause it to slip against the face. therefore even if you did have rings, there would be negligible load on them. They really only just centre the wheel.


I autocross on wheels without hub centric rings. they tend to melt when the brakes get hot. i've had no probs with no rings.

Nickgt40 02-08-2013 07:21 PM

Stop using plastic rings and you won't have a problem

[neener]

BOOSTA 04-05-2013 05:01 AM

thanks Terry B! You found exactly what i was looking for what i need for my wheels! Those hub rings :)

YellowJellyBean 04-05-2013 11:11 AM

I just bought those exact same ones for my new wheels.


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