[parptarf]

I'm gonna get new wheels for my car and as of now I'm leaning towards buying a set of brand new OZ Allegerita.



I can get them in 8x18" with ET50 or ET57 for the fronts and 10x18" ET40 for the rears. I know the fronts will fit but I'm unsure about the rears. I want them as close to the wheel well as possible without any rubbing during heavy cornering, but won't ET40 be a little close?



My car is lowered about 35mm.

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[flash]

rears will not fit. not even close.

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[parptarf]

Come to think of it, local 968 owner uses 8x18 ET45 and 10x18 ET47 and they look like they are a perfect fit and are as close to the fender as you can go without any rubbing. (The front were originally ET42 but he had them machined 3mm)

Seems like I already knew the answer. I can get them in ET65 and use spacers to get them closer to the fender.

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[flash]

he would have to run a boat load of negative camber, or be at stock ride height, in order to run a 10" with a 47 offset. i am running a 10" with a 52mm offset in the rear, and i clear by 1mm, lowered just over 25mm and 1.7 degrees negative camber (which is as much as i can run without losing net contact patch area and thereby losing cornering)



spacers that large will add a LOT of weight. you may not like the loss of acceleration and braking, as well as the negative impacts on handling and ride comfort. i would look to limit final combination weight (tire, wheel, spacer, lugs, etc) to no more than 24.5kg, especially if you are normally aspirated. i know those are light, and probably only about 9kg or so each (real information on these is very sketchy out there), but i'd keep an eye on that.

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[Cloud9...68]

Are you sure those wheels even come in the Porsche-only 5 x 150 mm bolt pattern? I've scoured the universe for wheels that come in our oddball bolt pattern, and I didn't think these did, but I may have missed it.

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[flash]

perhaps it's because you should be looking at 5 x 130?



looks like they do make them for porsche



   

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[Cloud9...68]

Yes, I meant 5 x 130 mm - typo. Those look pretty sharp - wonder if they come in 17 x 9".

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[flash]

i think they do

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[Cloud9...68]

From Oz's web site, here are the sizes, offsets, and weights these wheels come in:

SIZE HOLES PCD ET KG 7X16 4 100 37 6,20 7X17 4 100 44 6,29 8X17 5 100 48 6,98 8X18 5 130 57 7,72 9X18 5 130 43 8,25 10X18 5 130 65 8,78 11X18 5 130 63 9,55



The formatting of the table on the web site got lost when pasting it here, but the gist of it is that this wheel appears to only be available up to 8" wide in 17", and the 5 x 130 mm bolt pattern only appears to be available in 18", but according to this table, they're available in an offset of 65 in the 10 x 18 size the OP is interested in for the rear.

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[parptarf]

Flash,

[quote name='flash' timestamp='1402668729' post='158558']

he would have to run a boat load of negative camber, or be at stock ride height, in order to run a 10" with a 47 offset. i am running a 10" with a 52mm offset in the rear, and i clear by 1mm, lowered just over 25mm and 1.7 degrees negative camber (which is as much as i can run without losing net contact patch area and thereby losing cornering)



spacers that large will add a LOT of weight. you may not like the loss of acceleration and braking, as well as the negative impacts on handling and ride comfort. i would look to limit final combination weight (tire, wheel, spacer, lugs, etc) to no more than 24.5kg, especially if you are normally aspirated. i know those are light, and probably only about 9kg or so each (real information on these is very sketchy out there), but i'd keep an eye on that.

[/quote]



So you'd recommend 8x18" ET50 for the fronts and 10x18" ET65 on the rear? I've had that diameter on the rears before but with a 5mm spacer. The issue is I can't seem to find anything under 10mm with a centering ring, and I'm not gonna drive without a center ring on my spacer.(I do that on my 17" and it's horrible)

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[flash]

no, that is not what i would recommend. not sure where that came from (maybe responding to cloud's post?).



i hate spacers. they are inherently dangerous. that is why most sanctioning bodies outlaw them. if you have to space the rim out, weld them onto the rim, and then change the studs to accommodate the push.



i would recommend getting wheels that fit to begin with.



for both rims, somewhere between 52 and 57mm offset would be fine.



by the way, this is why the rims are so light. they have small hubs. by the time you add in the additional material needed to get them to fit, you are right back at the weight of many other rims out there.



being a cast rim, i would be very interested to see just how strong they are. to get that light, they had to remove a lot of material. historically we know how that tends to turn out.

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[ds968]

If you use spacers most definitely change to the longer, and steel, studs. Some Porsches came with spacers on them right from the factory ( though I can't figure out why they would do that .. weird, but they did ) so they can't be all that risky to have on , unless you're autoXing or tracking the car, in which case I can probably see the argument against them.. In any event, absolutely warrants the right studs / bolt-throughs and with the latter make sure the torque on tne spacers themselves ( 92 or 95 I think..) is periodically checked.

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[flash]

spacers seem to be an odd porsche phenomenon. not sure why. i all my years around the track, they are almost exclusively the only place i ever saw them.



i agree about the lug nuts. get rid of the aluminum and go steel. they are only designed to hold full torque for about 25 on and offs. after that, they start losing it gradually, until it's too late. especially with larger wheels, this is potentially a huge issue.



torque spec is 96 lb/ft

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[parptarf]

I'm talking about getting 10x18 ET65 without any spacing for the rears.

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[flash]

if you run much negative camber, or lower the car, that will rub, assuming you are planning on running a traditionally sized tire for that rim.

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[parptarf]

There's only camber in the front so that won't cause anything at the rear. It's lowered but not that much.



I know for a fact that with a 5mm spacer it won't rub on anything, that's what the car had when I bought it. The question is, will it rub without it. I'm gonna send the last owner a message and as is if he tried without the spacer.

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[flash]

you don't have any camber in the rear??? you should have about a degree or so.



anyway, there have been a number of guys over the years try to fit 65 offset rims. there have been mixed results. many have had the tires hit on the inside. this was caused by either too much negative camber, lowering the car, or spongy shocks.



what size and brand of tire do you plan to run?

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[parptarf]

Imeant excessive camber, sorry. There is a tiny bit of negative.

I'm most likely buying used with Mishelin PS2, so I'm guessing they're 265/35?

If that rubs I'll get the same tires but in 255 width.

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[flash]

a 255 will be stretched too tight on a 10" rim, especially for a michelin. a 265/35 is as small as you can go.



it's going to be close. i would weld a spacer onto the hub of the wheel, and then put in longer studs.

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[parptarf]

I'll look into doing that, at least the studs. I'm still waiting on a confirmation what the offset and dimentions of the wheels are. I'm not gonna get that answer until Thursday or Friday. But if they don't fit I have some other rims that shouldn't be much of a problem, they're not Alleggeritas though. (8x18" ET52 and 10x18" ET60)





I wish new wheels didn't cost so incredebily much for Porsches here in Norway. A brand new set of Alleggeritas with N-marked Bridgestones cost about $5000 with a heavy discount. Without the discount you can almost double the pricce.

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