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996TT Tiptronic Rear Springs

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My new (to me) 2003 996 TT Tiptronic Coupe came with H&R lowering springs and I am looking to switch back to stock suspension as its my daily driver and I have to deal with NJ roads. There are plenty of used springs out there but unfortunately the only ones I have found are off of 6-speeds.

As there are different part numbers for the Tiptronic vs. 6 speed rear springs I assume there is a difference in spring rates to deal with the weight of the Tiptronic. Does anyone know what the difference is? Would using 6 speed rear springs cause an issue?

I believe the latest part #'s are:

Tiptronic Rear Springs: 996.333.531.47 (2002-2005 M 249 Coupe)

6-Speed Rear Springs: 996.333.531.46 (2002-2005 M 480 Coupe)


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Yes, the Tiptronic car is heavier so the springs are stiffer. I would be afraid the 6 speed springs might allow the rear of the car to sag - perhaps not at first but later.

Porsche would not have made two different part numbers for different springs if they didn't need to.

I personally would not put 6 speed springs on a Tip.

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Thanks for the replies Loren and Paulspeed.

Yes, I agree that the difference in weight would catch up to the springs sooner or later. Thanks for the confirmation.

I did call Sunset. A new set of springs (front & rear) would be about $450 shipped. Would have liked to get a set of low mileage used for $100-200 but may have to bite the bullet and go for the new set as I haven't been able to find a set used. Might not be the worst thing to get a brand new set of springs for the "new" Turbo!

How do you think the shocks (stock) have fared after being lowered for 10,000-20,000 miles? (Not sure when the car was lowered)

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