Severe wheel hop on hard acceleration

[orcfromthesouth]

Hi,
Newby here. Bought my first 911 3 weeks ago. Only 25M miles.
Great board. I really like the DIY section!
I have a 95 cabrio that has locking diff and the braking stability system. The car also has the turbo 18" wheels with Pirelli Rosso's (285/30 rear) and a H&R trick suspention.
If I dump the clutch at 4000, the right rear wheel hops like mad. What's up? I do my own wrenching and have an above average understanding of motor vehicles.
Help!

Orc

[Orc]

Anyone care to comment? Do you need more information? I'm new to Porsche and the forums associated with the brand, so I apologize if I come across as eager...........
Orc

[orcfromthesouth]

Well. I have a theory, and I would appreciate if anyone can corroborate.

I have the braking stability system (the one that works to avoid the tail from swinging out at under 70 kph by selectively applying the brakes to straighten the car out).

I believe that under certain circumstances, you may activate this mode if you drop the hammer at 4 thou in first. So the computer brakes the wheel, which makes it hop. But I am no expert on these systems. I do know of some cars were you can switch it off.

Anyone care to comment?

Orc

[Racing Diff]

I had a 96 993 with PSM, and it didn't hop. Your answer may bring you to your differential. If the previous owner paid so much for his suspension, there's a chance he shelled out $2K for a racing differential. These units have selectable locking characteristics.

[Mark in Baltimore]

I don't think your PSM would cause wheel hop. Either your rear shocks are shot or your tire pressure is too high.