The GT4 OEM vs Aftermarket Parts Weight Thread
#16
Cargraphic has pics of it up on their website, you can visually see how much more material there is in the old one.
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enduro (02-15-2022)
#17
#18
Here are the wheel weights for our new forged designs for the GT4:
VS-5RS Forged
19x9" ET50 - 18.5 lbs
19x10.5" ET44 - 20.1 lbs
19x11" ET45 - 20.7 lbs
EC-7RS Forged
19x9" ET50 - 19.6 lbs
19x11" ET45 - 21.4 lbs
If you run smaller front (PFC or 997 GT3/RS are common options), you can shave more rotational mass and run our 18" wheels:
VS-5RS Forged
18x9" ET50 - 17.8 lbs
18x10.5" ET44 - 18.8 lbs
EC-7RS Forged
18x9" ET50 - 19 lbs
18x10.5" ET44 - 20.1 lbs
- Ryan
VS-5RS Forged
19x9" ET50 - 18.5 lbs
19x10.5" ET44 - 20.1 lbs
19x11" ET45 - 20.7 lbs
EC-7RS Forged
19x9" ET50 - 19.6 lbs
19x11" ET45 - 21.4 lbs
If you run smaller front (PFC or 997 GT3/RS are common options), you can shave more rotational mass and run our 18" wheels:
VS-5RS Forged
18x9" ET50 - 17.8 lbs
18x10.5" ET44 - 18.8 lbs
EC-7RS Forged
18x9" ET50 - 19 lbs
18x10.5" ET44 - 20.1 lbs
- Ryan
#19
#20
Bought a set of Forgeline 19" wheels from Competition Motorsport for track use. With TPMS and 265/35/19 and 295/35/19 vs. the 245/35/20 and 295/30/20 for OEM.
Weighed them while rearranging garage (0 miles on Forgeline, ~10 miles on OEM):
OEM Front: 48.3 lb
OEM Rear: 56.0 lb
Forgeline Front: 43.3 lb
Forgeline Rear: 50.3 lb
So 5 lbs weight saving on the front, 5.7 in the rear per wheel (using my bathroom scale)
Weighed them while rearranging garage (0 miles on Forgeline, ~10 miles on OEM):
OEM Front: 48.3 lb
OEM Rear: 56.0 lb
Forgeline Front: 43.3 lb
Forgeline Rear: 50.3 lb
So 5 lbs weight saving on the front, 5.7 in the rear per wheel (using my bathroom scale)
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enduro (03-09-2022)
#21
On Bathroom Scale
19x9 Forgelines 18 pounds
19X11 Forgelines 23.6 pounds
According to Tire Rack
19x8.5 OZ Leggera HLT wheels 20.75
19x11 OZ Leggera HLT wheels 23.1
Recaro Podium 13 pounds
BBi Autosport seat mount 15 pounds
19x9 Forgelines 18 pounds
19X11 Forgelines 23.6 pounds
According to Tire Rack
19x8.5 OZ Leggera HLT wheels 20.75
19x11 OZ Leggera HLT wheels 23.1
Recaro Podium 13 pounds
BBi Autosport seat mount 15 pounds
#22
Thanks. I'll weigh a couple things in a couple days and then ask the mods to update. It's notable that after making this thread, I learned that RL removes the ability for a mere mortal to edit his posts after the posts are a couple days old
#23
APEX SM10 19x9 et 50 WITH 100% tread 255/35ZR19 Cup 2 m0 96Y: 44.4 lbs Source: my bathroom scale
APEX SM10 19x11 et 46 WITH 100% tread 305/35ZR19 Cup 2 n0 102Y: 53.0 lbs Source: my bathroom scale
OEM Wheel Bolts (20): 4.16 lb
OEM Wheel lock key: 0.24 lb
OEM Bolts & Key total: 4.40 lb
MSI 88mm total length (medium) M14x1.5 studs (20): 3.76 lb
MSI 14mm radius M14x1.5 Nascar Nuts (20): 1.51 lb
MSI studs and nuts total: 5.27 lb
@TXshaggy I'll look into setting up a google spreadsheet and request you adjust the OP once I get it set up so I can adjust without bugging mods. And I'll set it up so I can pass along credentials if I decide to no longer support updates.
APEX SM10 19x11 et 46 WITH 100% tread 305/35ZR19 Cup 2 n0 102Y: 53.0 lbs Source: my bathroom scale
OEM Wheel Bolts (20): 4.16 lb
OEM Wheel lock key: 0.24 lb
OEM Bolts & Key total: 4.40 lb
MSI 88mm total length (medium) M14x1.5 studs (20): 3.76 lb
MSI 14mm radius M14x1.5 Nascar Nuts (20): 1.51 lb
MSI studs and nuts total: 5.27 lb
@TXshaggy I'll look into setting up a google spreadsheet and request you adjust the OP once I get it set up so I can adjust without bugging mods. And I'll set it up so I can pass along credentials if I decide to no longer support updates.
#24
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@TXshaggy I'll look into setting up a google spreadsheet and request you adjust the OP once I get it set up so I can adjust without bugging mods. And I'll set it up so I can pass along credentials if I decide to no longer support updates.
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enduro (11-10-2023)
#26
To OP. here are some info to add onto this thread. Since I have done OEM tire swaps to a new wheel recently. I have the weighted of OEM wheel by itself which is not far off from previous number of 23/26 lb that someone stated on other thread.
OEM GT4 wheel
20x8.5 ET61 (22.7 lb)
20x11 E50 (25.6 lb)
Signature Wheel (SV104)
20x85 ET55 (20.8 lb)
20x11 ET50 (21.7 lb)
OEM GT4 wheel
20x8.5 ET61 (22.7 lb)
20x11 E50 (25.6 lb)
Signature Wheel (SV104)
20x85 ET55 (20.8 lb)
20x11 ET50 (21.7 lb)
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Visceral (10-31-2022)
#27
Fresh SC3s on stock wheels via my bathroom scale.
Front: 245/35R20 Eagle F1 Supercar 3 on Stock GT4 Wheels
Weight w/TPMS and Center Caps: 50.4 lbs
Front: 295/30R20 Eagle F1 Supercar 3 on Stock GT4 Wheels
Weight w/TPMS and Center Caps: 57.4 lbs
Front: 245/35R20 Eagle F1 Supercar 3 on Stock GT4 Wheels
Weight w/TPMS and Center Caps: 50.4 lbs
Front: 295/30R20 Eagle F1 Supercar 3 on Stock GT4 Wheels
Weight w/TPMS and Center Caps: 57.4 lbs
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#29
Thx for bumping this thread.
I need to figure out how to make some kind of linkable document that I can link so I can update the OP without bugging the mods. Shaggy has been courteous enough to offer to do it, but I'd rather not bug him every time. When I made this thread, I didn't realize that we can only edit our posts for a few days on RL. Anyhow, for now, please keep bumping with updates when you get them.
I need to figure out how to make some kind of linkable document that I can link so I can update the OP without bugging the mods. Shaggy has been courteous enough to offer to do it, but I'd rather not bug him every time. When I made this thread, I didn't realize that we can only edit our posts for a few days on RL. Anyhow, for now, please keep bumping with updates when you get them.
#30
ITT, I will document weights of GT4 OEM parts and aftermarket parts. Documentation will list (and link, if possilbe) source and be grouped by category. As they accumulate, I'll pull reputable responses into the first couple posts.
Headers, OAP, Cats.
Per side unless otherwise indicated.
OEM GT4 manifold with cats and hangers: 12.6 lbs. Source: my bathroom scale.
OEM GT4 OAP: 12.0 lbs. Source: my bathroom scale.
Akrapovic Ti OAP: 4.2 lbs each. Source: JCviggen
Dundon GT4 street manifold: 7.6 lbs. Source: my bathroom scale.
Dundon GT4 OAP with cats and two V band clamps: 6.6 lbs. Source: my bathroom scale.
Dundon GT4 OAP to stock exhaust flange adapters: 2.8 lbs. Source: my bathroom scale.
Brakes.
Per corner unless otherwise indicated.
OEM GT4 Front Caliper (Iron): 9.3 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Front Caliper (PCCB): 9.3 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Front Disc (Iron): 24.2 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Front Disc (PCCB): 15.2 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Caliper (Iron): 7.5 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Caliper (PCCB): 7.5 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Disc (Iron): 24 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Disc (PCCB): 13.5 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
Essex AP Racing Radi-Cal Front Caliper, pn CP9661-2S4L/3S4L: 6.2 lbs. Source: Essex
Essex AP Racing Radi-Cal 394mm Front Disc, pn CP9661-2S4L/3S4L: 21.5 lbs. Source: Essex
Essex AP Racing Radi-Cal Rear Caliper, pn CP9449-2/3S4L: 4.85 lbs. Source: Essex
Essex AP Racing Radi-Cal 380mm Rear Disc, pn CP5772-1016/1017GA: 19.1 lbs. Source: Essex
Interior.
front floor mats (both combined): 3 lbs. Source: FazedChicken
front trunk large plastic cover above battery area: 3 lbs. Source: FazedChicken
owners manual + flat tire kit + front trunk left/right side plastic inserts including all the content in them: 9 lbs. Source: FazedChicken
Exterior.
Battery.
OEM AGM 70Ah 430A DIN: 45.4 lbs
Antigravity AG-H4-40-Rs (40Ah) 12.9 lbs
Antigravity AG-H6-60-RS (60 Ah) 18.60 lbs
Headers, OAP, Cats.
Per side unless otherwise indicated.
OEM GT4 manifold with cats and hangers: 12.6 lbs. Source: my bathroom scale.
OEM GT4 OAP: 12.0 lbs. Source: my bathroom scale.
Akrapovic Ti OAP: 4.2 lbs each. Source: JCviggen
Dundon GT4 street manifold: 7.6 lbs. Source: my bathroom scale.
Dundon GT4 OAP with cats and two V band clamps: 6.6 lbs. Source: my bathroom scale.
Dundon GT4 OAP to stock exhaust flange adapters: 2.8 lbs. Source: my bathroom scale.
Brakes.
Per corner unless otherwise indicated.
OEM GT4 Front Caliper (Iron): 9.3 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Front Caliper (PCCB): 9.3 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Front Disc (Iron): 24.2 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Front Disc (PCCB): 15.2 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Caliper (Iron): 7.5 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Caliper (PCCB): 7.5 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Disc (Iron): 24 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
OEM GT4 Rear Disc (PCCB): 13.5 lbs* (*981 GT4, assumed to be same as 982. Source: Essex)
Essex AP Racing Radi-Cal Front Caliper, pn CP9661-2S4L/3S4L: 6.2 lbs. Source: Essex
Essex AP Racing Radi-Cal 394mm Front Disc, pn CP9661-2S4L/3S4L: 21.5 lbs. Source: Essex
Essex AP Racing Radi-Cal Rear Caliper, pn CP9449-2/3S4L: 4.85 lbs. Source: Essex
Essex AP Racing Radi-Cal 380mm Rear Disc, pn CP5772-1016/1017GA: 19.1 lbs. Source: Essex
Interior.
front floor mats (both combined): 3 lbs. Source: FazedChicken
front trunk large plastic cover above battery area: 3 lbs. Source: FazedChicken
owners manual + flat tire kit + front trunk left/right side plastic inserts including all the content in them: 9 lbs. Source: FazedChicken
Exterior.
Battery.
OEM AGM 70Ah 430A DIN: 45.4 lbs
Antigravity AG-H4-40-Rs (40Ah) 12.9 lbs
Antigravity AG-H6-60-RS (60 Ah) 18.60 lbs