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Another XXR 521 third gen - 1992 Firebird

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Old 02-18-2014, 02:47 PM
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Another XXR 521 third gen - 1992 Firebird

Just got them in the mail today. Still need to measure for tires, but will post pics as soon as they are on! P.S.- sorry for pics, just from my Note II will get better ones soon.

Specs are 18x10 all around with a +12 offset and a 3.5" lip. They are flat black with chrome rivets.

Suggestions on tires?

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Old 02-18-2014, 08:49 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Nice do they come in 17X12 with the offset we need for our cars and can you get them with just our bolt pattern

Last edited by Mirror Image; 02-18-2014 at 08:53 PM.
Old 02-18-2014, 08:55 PM
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Re: Another XXR 521 third gen - 1992 Firebird

You can go 275s or 285s all around

like in my thread I had 285/35s , price difference is minimal so I got wider tire tad more grip lol

Unless you want to run larger rear tire like a 295 and 285 front
Old 02-18-2014, 09:08 PM
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Re: Another XXR 521 third gen - 1992 Firebird

275 or 285 fits on the 10". Suggest you get 4 of the same size to rotate...
Old 02-18-2014, 09:17 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by paul_huryk
275 or 285 fits on the 10". Suggest you get 4 of the same size to rotate...
Thats the way I have always done in the past I will be doing a lot of mods soon and that will include 76 mm turbo so Im looking for as much rubber as I can get under the car do you think I can get away with 335 in the front that would be sick if I could
Old 02-18-2014, 09:31 PM
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Re: Another XXR 521 third gen - 1992 Firebird

I agree, but it is a option as some people like a larger rear tire
Old 02-18-2014, 09:32 PM
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Re: Another XXR 521 third gen - 1992 Firebird

I think that would be a pinch with a 335
Old 02-18-2014, 09:53 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Its not that Im looking for a badass look I just think that I will have a hard time trying to put the power to the ground
Old 02-18-2014, 10:22 PM
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Re: Another XXR 521 third gen - 1992 Firebird

To fit 12in wide going to need to alot work to inner wheel on the rear ,

and street legal drag radial

But can accomplish in a 10" or 11" wheel
Old 02-18-2014, 11:17 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Hey I have tools I can move things if need be but I dont think it would be that bad and as far as tires go I think Im going with the Bridgestone RE11 they seem to like them at the track
Old 02-19-2014, 12:47 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Cool should be fun project then , mini tub with 12in , theres a thread on it

xxr 521 doesn't come that wide tho in a 17in


http://www.nlmotoring.com/XXR-521-Wheels-s/1521.htm
Old 02-24-2014, 06:07 PM
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Re: Another XXR 521 third gen - 1992 Firebird

As stated in my other thread for my car, I have a 4th gen rear end which sticks out an extra 2in or so than the 3rd gen rear ends, so when I mounted my wheels they stuck out quuuuite a bit. So I may have to switch back to a third gen rear end because I'm not a fan of that look.

Well anyway, my tires will be here on the 27th and I'm off all day so I will have pics then.
Old 02-25-2014, 01:41 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by FooFighters92
As stated in my other thread for my car, I have a 4th gen rear end which sticks out an extra 2in or so than the 3rd gen rear ends, so when I mounted my wheels they stuck out quuuuite a bit. So I may have to switch back to a third gen rear end because I'm not a fan of that look.

Well anyway, my tires will be here on the 27th and I'm off all day so I will have pics then.
That was my major concern on Zach's thread and why I didn't go through with them.. And i was only looking at the rims he got.. you got the better offset and they still stuck out alot? Damn i dodged a bullet... Sorry to hear of the misfortune man. My 4th gen rear is built up too much to just switch back to a 3rd gen rear.
Old 02-25-2014, 09:20 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Yea +12 offset is more ideal , can redrill bolt pattern and will be a direct bolt on but once you have 4th gen rear than they wont fit

Last edited by Zach/90\irocZ; 02-25-2014 at 09:27 AM.
Old 03-16-2014, 10:18 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Oops I completely forgot to post pictures...here you go!

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Old 03-16-2014, 10:18 AM
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Old 03-16-2014, 10:19 AM
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Old 03-16-2014, 05:22 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Stretch and poke guys add negative camber to eliminate rubbing like that. Curious what's done to your suspension. I like how it sits though I wouldn't go that low with mine. The roads in Toronto are no where near good enough.
Old 03-16-2014, 05:38 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Love the rims. Needs more tire for my taste. I don't care for the stretched look. Car looks great.
Old 03-17-2014, 01:57 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by lb9 GTA
Stretch and poke guys add negative camber to eliminate rubbing like that. Curious what's done to your suspension. I like how it sits though I wouldn't go that low with mine. The roads in Toronto are no where near good enough.
My fronts do have slight camber adjustment on them. Plus that buildup was just a small amount and was only after driving for about 5 minutes and never built up again, just wore a small path for clearance. My suspension is stock aside from springs, Eibach lowering springs, which have been cut. I do plan on building suspension at some point to soften the ride and hopefully maintain lowered stance.

Originally Posted by FSTFBDY
Love the rims. Needs more tire for my taste. I don't care for the stretched look. Car looks great.
Thanks man!
Old 03-26-2014, 12:36 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Hey guys,Thought I would share my 3rd gen on XXR 521s. Has a bit of poke on the rear, I know some folks aren't fans of that look, but I dig it.
Attached Thumbnails Another XXR 521 third gen - 1992 Firebird-image.jpg  
Old 03-26-2014, 12:40 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Sorry for the horrible thumbnail post, I'm pretty new to the forum, not to savvy with it yet.
Old 03-27-2014, 02:31 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Looks pretty good. What size and type of tires do you have? And those are +12 all around with no spacers, or is that a 4th gen rear?
Old 03-27-2014, 05:19 PM
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Re: Another XXR 521 third gen - 1992 Firebird

If you're talking to me and not the guy above, I am running Dunlop Direzza 101's which are, aside from Falken 512's, the best tire to use for stretching. 235/45/18 all around. I have a 2" spacer up front and a 4th gen rear end.

Wheel specs are 18x10 with a +12 offset and a 3.5" lip

Last edited by FooFighters92; 03-27-2014 at 05:32 PM.
Old 03-27-2014, 05:39 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by DBLTKE
Looks pretty good. What size and type of tires do you have? And those are +12 all around with no spacers, or is that a 4th gen rear?
Thanks man. All 4 rims are 18x8.5 tires are 235 40 18. I'm running a 1.25" adapter for the front and a 2" adapter for the rear.. I plan to go with a 18x10 for the rear in the future with the +12 offset, possibly a 20x10, cuz I would like to run a fatter tire than a 235.
Old 03-27-2014, 05:42 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by DBLTKE
Looks pretty good. What size and type of tires do you have? And those are +12 all around with no spacers, or is that a 4th gen rear?
And the offset is +25 all around
Old 06-25-2014, 01:07 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by Iroc Ant
Hey guys,Thought I would share my 3rd gen on XXR 521s. Has a bit of poke on the rear, I know some folks aren't fans of that look, but I dig it.
Once you stand on your head, it looks great!
Old 06-25-2014, 03:15 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by Iroc Ant
And the offset is +25 all around
Go get 10s all around sell those whimpy 8.5 lol

Looks god besides the near stock width
Old 06-25-2014, 01:21 PM
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Re: Another XXR 521 third gen - 1992 Firebird

I think it's a really nice look. Not something I would go out of my way to do but it definitely works on your car. I'd rock that look no problem.

What size tires did you end up going with? Did you end up using adapters? I was always worried the proper offset adjustment for BMW wheels would be somewhere in that no man's land between spacers and adapters.

And for the record, 17x12's are a complete waste of time. You're gonna have a REAL hard time finding anything wider than a 315 in 17s, and there's only 4 or 5 options in that size and most of them are Nitto. 315s fit on a 17x11 and a 17x11 is really the only thing that's going to fit well in a 3rd gen fender without a minitub.
Old 07-13-2014, 12:37 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by Iroc Ant
Hey guys,Thought I would share my 3rd gen on XXR 521s. Has a bit of poke on the rear, I know some folks aren't fans of that look, but I dig it.
Do you have part numbers and where you got those, they look amazing. also do you have to run spacers on third gen rear ends or was that just for a wider track
Old 07-31-2014, 04:51 AM
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Re: Another XXR 521 third gen - 1992 Firebird

Not a huge fan of stretched tires but the car looks good!

I was looking at the same rims 12mm (5.97" BS) offset all around. Did you try them without the 2" Spacers up front? I'm sure they would fit almost perfect without rolling the lip etc on my car since I have C5 Z06 brakes which push out the track width 0.300 per side. If im doing my math right 12mm offset should be pretty damn close to perfect with a 10" wheel.

I know with a stock width rear they will fit perfect in the rear since i ran 15x10" rims on my last iroc with 6" backspace.

Either way looks awesome with that colour combo.

Jay

Last edited by Jay_rich; 07-31-2014 at 05:06 AM.
Old 07-31-2014, 02:21 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by Rice01
Do you have part numbers and where you got those, they look amazing. also do you have to run spacers on third gen rear ends or was that just for a wider track
Hey buddy try this website http://www.nlmotoring.com/XXR-521-Wheels-s/1521.htm. And for the spacers it depends on the offset, if you get the +25 offset like I did you will need at least a 1.25" spacer on a 3rd gen rear, I'm running a 2" spacer cuz that's what I had to work with :/ Lol..... +12 offset you should be able to run them without any spacers
Old 08-02-2014, 10:40 AM
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Re: Another XXR 521 third gen - 1992 Firebird

You can run less than a 1.25" spacer with +25 offset
Old 02-21-2015, 11:05 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Originally Posted by Iroc Ant
Hey guys,Thought I would share my 3rd gen on XXR 521s. Has a bit of poke on the rear, I know some folks aren't fans of that look, but I dig it.
That looks awesome !
Old 08-09-2017, 06:30 PM
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Re: Another XXR 521 third gen - 1992 Firebird

Will the +12mm offset fit over the front hub without a spacer?
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