Pontiac GTA Wheels

[slovo240]

Bump...

So what is the biggest tire someone put on GTA wheels?
I currently have 1 1/4 spacers and 225/60r16 tire. I have about 1/8th of a inch between the tire and wheelwell.

[Corey]

I have some 225/50's I will be mounting up soon. I have a set of 15mm adapters and 20mm adapters so I will see what works. Won't be nearly as low I am now but I will be going as low as possible without rub. 0 offset will be out back and 16 up front.

[slovo240]

Originally Posted by Corey

I have some 225/50's I will be mounting up soon. I have a set of 15mm adapters and 20mm adapters so I will see what works. Won't be nearly as low I am now but I will be going as low as possible without rub. 0 offset will be out back and 16 up front.

I was looking at some 235/50/16. My car isn't lowered at all.

[NeloGSX]

So jealous of you USA guys..don't care what I would have to do to fit GTA wheels on my 140...hard to come by on this side of the pond.

[Tottspur91]

Sorry to bump an old thread, but i want to put these wheels on my 92 244 gl, what exactly do I need?

Wheel spacer?
Wheel Adapters?
Both?

And what size wheel adapters do I have to have made to convert the 5X108 to the size the gta wheels use?

Sorry first time dealing with anything like this and I'm out of my depth

[James M]

This thread is the best bet for finding info on it, props for searching and finding it. Reading up on wheel adapters will be helpful before throwing down money on something others say is right without knowing what you're actually buying.

Your looking for adapters that are

Originally Posted by Tottspur91

5X108

To

Originally Posted by AndrewNance

5x4.75

The wheels have a

Originally Posted by fortbrick

70.3mm center bore and your car has a 65.1mm center bore.

Thickness depends on how low your car is, desired tire size, and how much you want to modify the inner/outer fender (look it up before your try to roll them) from:

Originally Posted by fortbrick

19mm

To

Originally Posted by chris gilmour

1" (25.4mm)

Be aware that with thin adapters the studs will protrude into the wheel so you'll have to

Originally Posted by AndrewNance

cut them down

and as a tip you should

Originally Posted by cwdodson88

Make sure when you cut the studs to put an open ended lug nut on then turned down below your mark so that when you take said lug nut off you chase the threads clean

Also be aware their are

Originally Posted by AndrewNance

et16 and et0

GTA wheels, as they where front and back pairs on the Pontiacs

Based on the info on this thread and my own research on wheel adapters I was able to get GTA wheels on my 242 without issue

[Tottspur91]

Originally Posted by James M

This thread is the best bet for finding info on it, props for searching and finding it. Reading up on wheel adapters will be helpful before throwing down money on something others say is right without knowing what you're actually buying.

Your looking for adapters that are


To


The wheels have a


Thickness depends on how low your car is, desired tire size, and how much you want to modify the inner/outer fender (look it up before your try to roll them) from:


To


Be aware that with thin adapters the studs will protrude into the wheel so you'll have to

and as a tip you should


Also be aware their are

GTA wheels, as they where front and back pairs on the Pontiacs

Based on the info on this thread and my own research on wheel adapters I was able to get GTA wheels on my 242 without issue

Thanks for the help! Which gta wheels did you end up getting? The front or rears?
So I've got to get hubcentric wheel adapters, wheel spacers and I may have to cut the lugs, which is all fine but your look is the exact look I'm going for so I'm wondering if you had to roll the fenders,would like to follow as closely to your build as possible

[AndrewNance]

You need wheel adapters. Wheel spacers are the same thing but don’t change the bolt pattern, they just push the wheels out more. You’ll need to cut your studs a little if the adapters are thinner than 25(?)mm. You’ll probably have to roll your fenders either way since your offsets are going to be in the negative (wheels further out). If you have four front GTA wheels that would help a bit.

I know this 244 ran 205/50/16 and I’m pretty sure it had 15mm adapters or whatever the thinnest that they’ll make is.

[James M]

I have 19mm adapters with front GTA wheels (0mm offset before adapters, -19mm after) on the rear of the car and rear GTA wheels (16mm before, -3mm after) on the front. The front arches are untouched but the rear inner fenders are pretty dramatically cut out. 205/50r16 tires and BNE-DIY shortened housing coil overs w/10" 400lb springs up front, 11' 250lb rear springs with adjusters (unless I changed it and forgot).

You'll want to decide on ride height, tire size, adapter thickness and wheel offset together for the easiest time (I did none of this and wasted a bunch of time/money). Really I'd recommend learning about wheel specs and whatnot first before simply reading what has been done before and trying to copy it. Once you have a good understanding of stuff it's a lot easier to interpret various setups and see what you do and don't want in a particular setup.

[mikep]

On the struts, did you just get them cut and threaded? What inserts are you using with the 400# springs? I'm cutting 740 tubes to put on a corolla, 3" shorter with saab 900 inserts.

[James M]

Originally Posted by mikep

On the struts, did you just get them cut and threaded? What inserts are you using with the 400# springs? I'm cutting 740 tubes to put on a corolla, 3" shorter with saab 900 inserts.

They are Koni 8610-1437 race inserts, I cut about 3" off the tubes just below the threads and welded them back together