OZ Racing Leggera HLT

[ZionsWrath]

Those look nice. But I don't want stock size, what other specs do they cum in?

[Gunman]

Originally Posted by cslntuee

HI,


I am still a beginner in this topic. I have one basic question.
The different offset value will only the outlooking or also affect the ex. handling, road quality...etc?


Do I need to adjust the suspension setting to keep the same balance
as stock, if I have different wheel offset than stock?


Thanks.

Offset will affect the scrub radius up front, which will affect the steering feel.

Offset will affect the track width in front and back. Generally speaking, increasing track width is good, but too much offset increases the loads on the wheel bearings.

[dem00n]

Originally Posted by ZionsWrath

Those look nice. But I don't want stock size, what other specs do they cum in?

1st off, put yo **** away.

2nd off, you can't Google?

3rd, here's what you wanted.

http://www.tirerack.com/wheels/Wheel...All&sort=Brand

[CrazyWookiee]

Holy Rays G25 Knock Off.

[cslntuee]

Originally Posted by Gunman

Offset will affect the scrub radius up front, which will affect the steering feel.

Offset will affect the track width in front and back. Generally speaking, increasing track width is good, but too much offset increases the loads on the wheel bearings.

I am a daily driver and plan to install the STI lower spring (15mm).
I read some thread. It looks like using tire spec: 225/45/R17 sticky tired
should be pretty good upgrade. I have two questions as below.
1. What's different (advantages and disadvantages) between using 7J,
7.5J and 8J? (It looks like all can fit 225/45/R17) (8J might even better
for 235/45/R17. I am not sure)


2. What's the optimize offset for this set up?


Thanks.

[DAEMANO]

Similar but far from the same. Right off the I see differences in the stud hole position (at the spoke join on OZ, and in the webbing on the Rays). The flange is grooved on the Rays but smooth on the OZ. The way the spokes join with the flange/lip is different on either wheel. The spoke on the OZ is more angular than the Rays. There are no "dimples" on the OZ. The Rays has a nearly flat center cap, the OZ does not. The angle on the Rays spoke is more open than the straighter spoke angle of the OZ. Most importantly I doubt Rays was the first company to produce a wide triangular split 5 spoke wheel, but you seem to take pride in your Rays wheels and that sticker on them so there could be some bias imo, no disrespect intended.

Originally Posted by CrazyWookiee

Holy Rays G25 Knock Off.

[Gunman]

Originally Posted by cslntuee

I am a daily driver and plan to install the STI lower spring (15mm).
I read some thread. It looks like using tire spec: 225/45/R17 sticky tired
should be pretty good upgrade. I have two questions as below.
1. What's different (advantages and disadvantages) between using 7J,
7.5J and 8J? (It looks like all can fit 225/45/R17) (8J might even better
for 235/45/R17. I am not sure)

The wider the wheel, the stiffer the side wall of the tire will be, ie exagerating a bit, but look at it like this:
|_| = narrow wheel
\_/ = wider wheel
Because the side wall is angled, it helps triangulate the tread part of the tire, and stiffens things up. Only within the recommended widths from the tire manufacturer though. Go to wide with the wheel, or too narrow with the tire for the stretch look, and you actually weaken the system.

2. What's the optimize offset for this set up?


Thanks.

Depends on what you're after. For me personally, I plan to go with a 17x8 wheel, in a 45-48 offset. It should still clear the spring perch, and scrub stays close to stock. I'll run a sticky 215-45, so I can shed weight with an upgraded wheel, probably gain some of that weight back with a better tire, but hopefully still have a net loss in weight vs. stock.

[switchlanez]

Originally Posted by Gunman

|_| = narrow wheel
\_/ = wider wheel
Because the side wall is angled, it helps triangulate the tread part of the tire, and stiffens things up.

Can you elaborate on this? I see the straight sidewall as being more rigid against vertical shock forces. Similar to why flat faced spokes have less tendency than concave spokes to bend/shatter on impact (plus flat spokes use less material/make the wheel lighter). Concave spokes transfer forces at an angle to the hub which can impart flex to the spokes. Likewise, an angled sidewall will flex more than a straight one.

The only way I see angled side walls being stiffer is during cornering where there are vertical and horizontal components of forces. Then an angled wall will flex to be closer to perpendicular to the rim and straight wall will flex at an angle to the rim. But moving in a straight line with purely vertical forces being transmitted, I see a straight sidewall being stiffer.

[CrazyWookiee]

Yea, of course. I saw all those differences right away. But I do feel that OZ looked at this wheel and tried to mimic a lot of its characteristics. I don't know quite that many wheels that have that similar look and the "webbing" between the spokes. Even though the OZ and the Rays is drilled in different areas, that "webbing" between the thin spokes really does give it away for me. I know OZ isn't a company that copies wheel's straight through like Rota, but they do take major designing queues from a lot of companies.

Originally Posted by DAEMANO

Similar but far from the same. Right off the I see differences in the stud hole position (at the spoke join on OZ, and in the webbing on the Rays). The flange is grooved on the Rays but smooth on the OZ. The way the spokes join with the flange/lip is different on either wheel. The spoke on the OZ is more angular than the Rays. There are no "dimples" on the OZ. The Rays has a nearly flat center cap, the OZ does not. The angle on the Rays spoke is more open than the straighter spoke angle of the OZ. Most importantly I doubt Rays was the first company to produce a wide triangular split 5 spoke wheel, but you seem to take pride in your Rays wheels and that sticker on them so there could be some bias imo, no disrespect intended.

[Gunman]

Originally Posted by switchlanez

Can you elaborate on this? I see the straight sidewall as being more rigid against vertical shock forces. Similar to why flat faced spokes have less tendency than concave spokes to bend/shatter on impact (plus flat spokes use less material/make the wheel lighter). Concave spokes transfer forces at an angle to the hub which can impart flex to the spokes. Likewise, an angled sidewall will flex more than a straight one.

The only way I see angled side walls being stiffer is during cornering where there are vertical and horizontal components of forces. Then an angled wall will flex to be closer to perpendicular to the rim and straight wall will flex at an angle to the rim. But moving in a straight line with purely vertical forces being transmitted, I see a straight sidewall being stiffer.

You got it, stiffer during cornering loads, putting more of the compliance into the suspension, instead of the tire.

[dem00n]

Originally Posted by CrazyWookiee

Holy Rays G25 Knock Off.

We could play this game all day.

[Khyron686]

Originally Posted by dem00n

We could play this game all day.

I LOVE those BBS RFs - Japan only. That 5 "fork" spoke design is on a few cars including the new STI I think. I think the Leggera is pretty far off from the Rays. If I didn't already have the Ultraleggeras I'd be ordering these (assuming weight is good).

[zAnSh1n]

i'm thinking about picking up a set in 18s, but i don't like all the markings along the lip o_0

the g25 looks nice...

[tomkozski]

Tirerack's newest catalog has the Leggera on a white BRZ on the main cover.