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Discussion Starter · #1 ·
I thought it has been posted but I couldn't find it.

Does anyone know the weight of the Z51 wheel, front and rear? Thx
 

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Z51 front wheel and tire weights: Info thanks to "mjw930", corroborated by edmunds.com
Wheel (silver, if that matters) - 24 lbs.
Tire (original PSS with 600 miles) - 27 lbs.

2014 Chevrolet Corvette Stingray Z51 Suspension Walkaround on Edmunds.com. = 51.5 for fronts, 60 for rear wheel/tire for Z-51's.

2014Stingray Stock Wheels/Tires/Offsets

Base:
Front Wheels: 18" x 8.5" +56mm
Rear Wheels: 19" x 10" +79mm

Z-51:
Front Wheels: 19" x 8.5" +56mm
Rear Wheels: 20" x 10" +79mm

2014 StingRay Tires: Michelin Pilot Super Sport EMT's

Base Model:
Fronts: P245/40R18
Rears: P285/35R19

Z-51's:
Fronts: P245/35R19
Rears: P285/30R20
 

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I'm also not convinced the Z51 rims are forged. 2 wheel professionals looked at them and one said Forged, the other said pressure cast..... Regardless, they look to be high quality.
 
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Heard a presentation by Tadge, showing a PowerPoint slide, in which he said Z-51 wheels are forged, unlike base wheels which are cast. He added, that is why the weight difference, despite their 1" diameter difference (base vs. Z-51), is very small.
 

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Discussion Starter · #5 ·
Is the larger wheel on the rear for aesthetic purposes only? 8.5 pounds difference from front to rear on a wheel/tire would significantly impact performance correct?

I would stick with 19 front and 20 on the rear but the aftermarket I'm interested in is also about 7 pounds lighter for the 19. Besides changing for the look, would this wheel weight savings be noticeable everyday or just a fraction of a second on a track. I am trying to convince myself there are actual worthwhile reasons to switch wheels lol. Thanks.
 

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Heard a presentation by Tadge, showing a PowerPoint slide, in which he said Z-51 wheels are forged, unlike base wheels which are cast. He added, that is why the weight difference, despite their 1" diameter difference (base vs. Z-51), is very small.
I understand but no production literature touts the Z51 wheels as being forged which is quite uncommon. Manufacturers usually always call out forged as a differentiator. It's quite possible things changed between pre production, when the PowerPoint slide was made, and real production. It's also interesting that the Z51 wheels have a list price not too much higher than the base wheels, something that also points to them not being forged. I know the forged SRT 20" wheels I had on my Jeep were $1500 each, the Z51 wheels are half that price at full MSRP.
 
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