wheels fitment

[AK72]

Hello guys,

Need your advise on rims fitment on my Z4 si, will they fit?
19x9.5 +33 Front
19x10 +25 Rear

Thanks

[The HACK]

No.

[3002 tii]

Originally Posted by The HACK

No.

Fronts maybe with ton of camber

Rears very doubtful unless again ton of camber plus stretched tires

[The HACK]

Originally Posted by 3002 tii

Fronts maybe with ton of camber

I guess it depends on one's definition of "fit," because it's going to take, in addition to camber, a narrow tire to "stretch" onto the 9.5" wide wheels to avoid rubbing the fender.

If OP's definition of "fit" is just being able to stuff the wheels under the arches, actual function of the wheels be damned, YES both the front and rears can "fit."

With that width and offset, on a 3.0Si? I wouldn't even bother trying. And we haven't even factored in suspension and lowering. On stock camber and suspension, the front is going to stick past the fender by more than 1/2", and the rears will likely be more than 1". But the car will roll, as long as it's only going in a straight line (and not have to brake or accelerate hard).

[AK72]

Thanks a lot guys, I was checking only for the reason bcs local guy selling brand new VMRs that I love

[AK72]

Originally Posted by The HACK

I guess it depends on one's definition of "fit," because it's going to take, in addition to camber, a narrow tire to "stretch" onto the 9.5" wide wheels to avoid rubbing the fender.

If OP's definition of "fit" is just being able to stuff the wheels under the arches, actual function of the wheels be damned, YES both the front and rears can "fit."

With that width and offset, on a 3.0Si? I wouldn't even bother trying. And we haven't even factored in suspension and lowering. On stock camber and suspension, the front is going to stick past the fender by more than 1/2", and the rears will likely be more than 1". But the car will roll, as long as it's only going in a straight line (and not have to brake or accelerate hard).

Maybe you can suggest me size that will fit my car without any Issues?

[The HACK]

Originally Posted by AK72

Maybe you can suggest me size that will fit my car without any Issues?

Sure thing.

18” x 8” et47 front
18” x 8.5” et50 rear.

[3002 tii]

Originally Posted by The HACK

I guess it depends on one's definition of "fit," because it's going to take, in addition to camber, a narrow tire to "stretch" onto the 9.5" wide wheels to avoid rubbing the fender.

If OP's definition of "fit" is just being able to stuff the wheels under the arches, actual function of the wheels be damned, YES both the front and rears can "fit."

With that width and offset, on a 3.0Si? I wouldn't even bother trying. And we haven't even factored in suspension and lowering. On stock camber and suspension, the front is going to stick past the fender by more than 1/2", and the rears will likely be more than 1". But the car will roll, as long as it's only going in a straight line (and not have to brake or accelerate hard).

Few years ago I ran a 17x9.5 with 255 Hankook RS3 with -2.8 up front and it was fine. Only on hard compression did I rub against the liner. This was on a lowered 3.0si running AST 4100’s...

Originally Posted by AK72

Thanks a lot guys, I was checking only for the reason bcs local guy selling brand new VMRs that I love

Check out threads by Apex, they have good wheels fitment suggestions from direct bolt on to aggressive (and what it takes to get it to fit)

But I would skip VMR, too heavy for my tastes

[Steeler]

+1 on the Apex Wheels
I am running these specs
18x8.5" ET35 225/45
18x9" ET30 255/40
lowered with very little camber
My fronts could take a 6mm spacer.

[dc_wright]

For reference I'm currently running 18x8.5 +40 on all 4 corners with Hankook RS4 275/35 in the rear and 265/35 in the front.
Suspension is OEM M Sport springs with Koni Sport struts/shocks.
Rear camber is at max attainable with factory adjustment (-2.5), same for the front at -1.3.
I get a slight rub on the inner edge of the front fender liner at the top of the arch under really hard cornering, no issues in the rear.

[AK72]

Originally Posted by The HACK

Sure thing.

18” x 8” et47 front
18” x 8.5” et50 rear.

that is factory setup I have now, lol

[AK72]

Originally Posted by 3002 tii

Few years ago I ran a 17x9.5 with 255 Hankook RS3 with -2.8 up front and it was fine. Only on hard compression did I rub against the liner. This was on a lowered 3.0si running AST 4100’s...




Check out threads by Apex, they have good wheels fitment suggestions from direct bolt on to aggressive (and what it takes to get it to fit)

But I would skip VMR, too heavy for my tastes

Even heavier than factory rims?

[3002 tii]

Originally Posted by AK72

Even heavier than factory rims?

Don’t recall but considering they’re 19’s most likely.

[The HACK]

Originally Posted by AK72

that is factory setup I have now, lol

You wanted sizes that will fit for sure with no issues, I complied.

You can infer from the factory size and offset by using an offset calculator based on inner and outer clearance as measured from your factory set-up. That’s the most logical way to figure out if a set of wheels will fit or not IMO.

[AK72]

Originally Posted by The HACK

You wanted sizes that will fit for sure with no issues, I complied.

You can infer from the factory size and offset by using an offset calculator based on inner and outer clearance as measured from your factory set-up. That’s the most logical way to figure out if a set of wheels will fit or not IMO.

Thank you

[AK72]

APEX suggested to me to go with this setup, what do you guys think?
Front: 19x8.5" ET35 with 235/35-19 tires
Rear: 19x9.5" ET33 with 255/35-19 tires

[Steeler]

Yup

I had those widths and offsets in 18" with no issues.
Not sure on the rolling diameter of those tire sizes though

[dc_wright]

Originally Posted by dbarton62

Yup

I had those widths and offsets in 18" with no issues.
Not sure on the rolling diameter of those tire sizes though

They're about 1/2" over OEM so not too bad. I think I'd want to go with 18" and try to get a bit more rubber on the car.

With the 235/255 tires, it's really just a cosmetic change. If the OP is good with that, no worries, but if there's an expected change in handling, it's not going to be there.

[Ponta]

Originally Posted by AK72

APEX suggested to me to go with this setup, what do you guys think?
Front: 19x8.5" ET35 with 235/35-19 tires
Rear: 19x9.5" ET33 with 255/35-19 tires

Size on the rear isn't proper. I would suggest 265/30 on the rear, because with 255/35 and 9,5 there is a big difference in a diameter, too big.
Front:

Rear:

[AK72]

Originally Posted by Ponta

Size on the rear isn't proper. I would suggest 265/30 on the rear, because with 255/35 and 9,5 there is a big difference in a diameter, too big.
Front:

Rear:

Thank you very much with such detailed answer, what app/website did you user to calculate ?