dont really know much about rim off sets, so can someone explain to me whats the difference between a +0 offset towards a +25? also why are some offsets in the negatives? im asking this becuase im really intrested in buying the axis og san wheels in 15x8 but i dont understand the offset...thanks for the help

 

the lower theoff set is the more the rims will be sticking out and sit more flush with the body. a higher offset will give it a tucked look. ill find some pics to show you....

 

sorry it's a tC(nebsters) but you will get the idea.

flush- a lower offset


tucked-a higher offset

 

hey thanks for the help man!!

 

Don't know what Scion you have, but for an xB/xA stock offset is +38, though the alloys were +40.

 

A 15x8 ET 0 will require rolling of the fenders if you're lowered.

The 15x8 ET 25 will be just fine.
Oh, and keep in mind that the OG-San will probably require a 5mm spacer in the front to clear the caliper...

 

soo to make my 17x7 Sportmax 962's, with a +40 offset, flush in the rear i would need.....

 

Well, a 20mm spacer would essentially make it a +20.

 

But what offset would be flush in the rear? +20?

 

People debate what's flush. Some don't consider it to be flush until it rubs. I can say that a 15x8 501 has a +15 and it will rub under certain circumstances. I'd say that a 7" wide wheel with a +20 would probably do just fine.

Again... I'm no expert in this stuff. Just going by what I read and extrapolate from there.

I also wouldn't suggest more than 20mm spacing. First off, you're going to have a hard time trying to stretch the parking brake cable with more than 20mm at the hub.

I'd say start with that. You shouldn't have trouble with rubbing at that point. Then, if you really need to flush it out more, you could get small wheel spacers. Again, for safety sake, I don't like wheel spacers (unless they're hubcentric)....

Make sense?

 

why is a 5mm spacer neccessary? what if i didnt put that, what would happen?

 

They will grind against the caliper.

 

i see..so would that mean i would need a 10mm spacer in the rear to even thing out? and do you by any chance have a picture of xbs rolling with og sanz?

 

crystal clear!

 

A zero offfset puts the mounting face of the rim dead center front to rear. So on a 7" wide rim, the dish will be 3.5" in front and behind the mounting surface. If you go to the + side, the mounting surface starts to move to the outside of the rim, making them sink into the wheel wells more. Conversely, if you go to - offsets, the mounting face moves toward the rear of the rim making them poke out more. This being said, a 8" wide rim with a zero offset will have .5" more lip than a 7" wide rim at zero offset, at the same time it will also stick .5" further out of the wheel well than the 7" will.

You can get most anything to work if you have the patience to work with it. A 8" wide with a zero offset needs fenders rolled or -3 degrees camber to keep from rubbing in the rear. The fronts will be fine at that. I am personally running 15x9 -5 front and 15x10-15 offset rear. I also have -5 camber on the rear and air ride, but I never rub even when rolling very low.

The best offsets for a 8" wide rim I have seen are +17F and +10R. This sits perfectly and requires no rolling of the fender or camber and it doesn't rub. Especially if you run a 195 tire on them. You can adjust offset for narrower or wider wheels from this setup, as well as determine spacers if you can't quite get the setup you want.

 

If you don't know the offset of a rim, but you want to find out what it is, can you just measure it?

 

Yes, measure the width of the rim. Then measure from the front of the rim to where the face would meet the brake rotor or drum. If it is more than half the width of the rim, it is a negative offset, if it is less, it is positive. Subtract this number from half the width of the rim, convert to mm, you have your offset.