Originally Posted by coldfire

Does anyone know the wheel weights for the OEM wheels? I know the aluminum ones are forged, so I would assume they are lighter than the standard 718 GT4/Spyder wheels. And then the mag wheels even lighter still. But I can't seem to find the weight listed anywhere.

Originally Posted by KelvinC

I do not have the weights for the mag wheels. But for the aluminum ones (assuming GT4 RS and Spyder RS wheels produced by SAI are the same):

Front: 20x8.5 et 61
Rear: 20.11 et 50

Front: 20.5 lbs
Rear: 23.75 lbs

Originally Posted by coldfire

Thanks. Seems that it would be hard to get significant weight savings with aftermarket forged aluminum vs. the OEM aluminum. Magnesium or other lightweight material would be needed.

Originally Posted by coldfire

Thanks. Seems that it would be hard to get significant weight savings with aftermarket forged aluminum vs. the OEM aluminum. Magnesium or other lightweight material would be needed.

Originally Posted by Westcoast

Apex VS-5RS-CL, front is 1/2" larger at 20x9, rear is OEM sized at 20x11

Front 19.9 lbs
Rear 21.8 lbs

Originally Posted by Ksdaoski

Mine weighed a bit more.

20x9 and 52
20x11 and 50
Brushed Clear GT4rs
Rears: 22.38lbs and 22.16lbs
Fronts: 20.18lbs and 20.28lbs

https://rennlist.com/forums/718-gts-...l#post19149810

Originally Posted by Westcoast

Interesting that there is a variance between wheels like that, and FWIW that was the spec from the Apex website and they did have "~" ahead of the weights, still very close to what they said.

Originally Posted by alcc

I don't doubt that. I am sure Porsche did not spend the same amount of time to dial in the 4RS as they did the GT3/3RS.

Did you try a Manthey car?

Originally Posted by Larry Cable

FYI, the OEM suspension *are* (already a) coilover design.

there are a few variables you can play with:
- spring rates
- shock valving (to "match" the chosen spring rate)
- low speed compression
- high speed compression
- low speed rebound
- high speed rebound

both PASM and DSC dynamically adjust the compression and rebound.

with any (adjustable) suspension technology (DSC or not) the practitioner must be experienced in chosing the appropriate springs and damping, and then be able to
further tune that setup via the adjustment of the high/low compression & rebound ...

this is not plug and play and requires a skillset only acquired either on the track or at a suspension/vehicle manufacturer...

generally low speed is for tuning in corners, high speed is for tuning "bumps"...

Originally Posted by Westcoast

Interesting that there is a variance between wheels like that, and FWIW that was the spec from the Apex website and they did have "~" ahead of the weights, still very close to what they said.

Originally Posted by TXshaggy

Probably because one is 5-lug and the other CL? Dunno, just guessing…

Originally Posted by Drifting

Important to keep in mind with the wheel weights that the GT4RS and Spyder RS wheels are lighter than the regular wheels. The 4RS/SRS aluminum wheels weigh 20.46 fronts and 23.70 in the rears. This is a total of 88.3 pounds which is 10lbs lighter than the GT4/Spyder wheels which weigh a total of 98.2 pounds.

So before spending money out of pocket it is important to remember that 4RS/SRS wheels are actually quite light for an OEM wheel.

Originally Posted by Westcoast

By variance I was thinking about the weight differences between the wheels of the same type, not CL versus 5-lug. I would have to dig up pictures but I didn't see much difference when I measured them.