I am getting -2 degrees at the rear after putting on lowered springs. With the stock suspension set up, it is impossible to have more positive camber. I'd like to move the rear back to -1.5 or -1 degree. What option is available for me to achieve that?

I have exactly the same issue, after lowering, which is OK for the track but is going to scrub rear tyres on the road.
Your option is to either slot the strut mounting holes outwards or to buy an adjustable top mount for the rear.

I'm running minus 1-30" (1 1/2 Deg) Front and 2 Deg rear

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allan@motordrive.com

What are the aftermarket products that would allow me to do that? Has anyone had any experience?

Good Man -1.5 & -2.0 Works great on the track........... Agreed

And what tells you that your driving on the road will suffer? As you drift sideways, you will scrub the outer edges of your tyres. Sorted.........

By all accounts - no road is safe for decent folk, North of Watford..................

Beware the 'Silver Bullet'

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Cheers Karel

'Power is Nothing without Control..........'

Are you suggesting that -2 is pretty good for the road too?

I am running -2.1 in the rear with no wear issues yet apparent after ~10,000 miles.

No kidding. What tire pressure do you keep at rear and front?

Front: -2.5 degrees @ 31 psi cold (street PS2)
Rear: -2.1 degrees @ 34 psi cold

Track tires are of course quite different and vary with conditions, etc.

Also, remember that the factory setting is about -1.7, so -2.0 is not far from stock.

Cheers,

I need a new set of lower arm that can give me more rear camber adjustability. Any idea where I can find one?

The photo you show is of the rear track rod (or toe link) and not the control arm. The control arm is just barely visible in your photo.

You can use the 996 GT3 rear lower control arms to increase adjustability, but I am not sure you can get too much less negative than stock. These items are usually applied to increase negative camber, not reduce, but can be purchased from Suncoast or any dealer. You will also need adjustment shims and likely new adjustable (also GT3) toe links.

These parts are quite pricey (~$1,000 US total), so you are probably better off just running the -2.0 degree of rear camber (which, in my opinion, is not too much even for the street). Even if the camber does increase tire wear it will take several sets of tires to justify the expense.

Cheers,

Thanks but sound like too expensive and too much trouble.