center bore size on 2013 focus se hatch

[Zillon]

Originally Posted by FocusHatch13

Plus my wheel has a 35mm offset... I'm not going to rub right?? 17x8 with tire 225x45x17

You've got the wrong idea about how offset works, unfortunately.

Offset is the distance from the centerline of the wheel to the flat area (plane) of the mounting surface. Thus, +/- 0 offset is a wheel whose mounting surface is at the center of the wheel. So, the higher the number, the more the wheel sits in towards the center of the vehicle.

At 55mm, the factory Ti wheels are considered to have a fairly high offset. Your wheels, at 35mm, definitely won't fit. With the spacers, the offset will drop to 10mm, since it brings the mounting surface closer to the center of the wheel. You're looking at a setup that absolutely won't fit on the Focus.

Here's a good calculator that will explain things in a more concise fashion: http://marksink.com/tire_wheel_offset/offset.html

[FocusHatch13]

What if I sent them back and got 48mm offset

[sailor]

Umm....

48-25=23, 23 is less than 55 by 33mm, so with 48 mm offset wheels & a 25mm spacer your wheels would stick out 33mm more than the stock ones.

Not understanding your 1.25" adapter post, Zillon was guessing a typical 25mm thickness for adapters - do you know the actual thickness of the ones you want to use?

Hmmm - if they ARE 1.25" thick, that would be roughly 29mm (not near the ruler I like to use for a quick check of rough estimate), so about 36mm extra stick out....

[FocusHatch13]

So if my adapter/spacer is 1.25 what offset wheel do I need? I'm sorry guys I'm not a wheel guy I'm a Moorhead I never messed with wheels Ahah.

[FocusHatch13]

Motor**

[sailor]

Wheels get a bit tricky because folks are often changing a couple things at once when swapping for different ones.

IF you aren't changing wheel diameter or width, the one thing left to "match" is the offset.

Since that is specified in mm., your 1.25" needs to be converted to mm. for an EXACT number you are trying to come close to. Without doing the math, or matching caliper measurements (my favorite double check for the math) 1.25" is about 29mm.

Given the spec. mentioned earlier of 55mm std. offset for your car, this would add up to about 84mm. offset for the wheel in order to leave room for that thick adapter.

Since that is outside the typical range of offsets avail., you can now see why adapters aren't used that often unless someone is going for "Poke" (moving the wheel outwards) which gets into a WHOLE new discussion on fitment, clearance, suspension geometry, bearing life etc..

Before making a decision, I'd suggest reading up on the pro's & con's of such an option.

We usually advocate finding wheels that fit your hubs to avoid this whole issue.

One other thing to keep in mind, a SMALL decrease in offset (additional stick out) is usually acceptable when the sizes don't match exactly. Too much offset is where you have to be very careful to avoid interference between the wheel & struts/calipers/etc..

Reading up on wheels/suspension/etc. can be fun, even for "motorheads", and it's a LOT cheaper than trying things that don't work out the way you'd like them to!

Luck!

[Ox-y-GenIII]

Hmm. I thought anything lower than 40mm will stick past the fenders. Plus you're adding 1.25" to the wheels. I am pretty positive they will not fit. You'd want to go with a really Hi offset to negate the effect of the spacers. But I'm no expert. Just from my own research before I ordered rims.

[Ox-y-GenIII]

Wow, we all posted at the same time. I like reading all this knowledge. I don't think they make the XXRs or any wheels in a high enough offset to work with those spacers though, but nice wheels and color one user had a set re-drilled rather than running adapters. That's an option.