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But nobody is mentioning the significance of dumping the OEM heavy run flats which adds 4 to 7 lb per tire, per wheel of unsprung weight. Add Run Flat Delete to one piece aluminum monoblocks and add aluminum two-piece rotors, that's significant on unsprung weight savings. 75-80lbs unsprung weight.
Love a set of 7075 forged aluminum lug nuts as well, smokes heavy steel.
If I were tracking the car I would ditch the run flats on the track wheels. But, for a street car that my wife drives, there is no way I am getting rid of the run flat tires.
For the track, I would run titanium lug nuts. I would never run aluminum lug nuts on the track. On the street the weight savings doesn't really matter. If I were concerned about the weight of the steel lug nuts on the street, I would use titanium lug nuts there as well. So mo aluminum lug nuts for me...anywhere.
From: Early 2020 Z51 Coupe, Original Owner, Ahwatukee Foothills, AZ
Originally Posted by winders
If I were tracking the car I would ditch the run flats on the track wheels. But, for a street car that my wife drives, there is no way I am getting rid of the run flat tires.
For the track, I would run titanium lug nuts. I would never run aluminum lug nuts on the track. On the street the weight savings doesn't really matter. If I were concerned about the weight of the steel lug nuts on the street, I would use titanium lug nuts there as well. So mo aluminum lug nuts for me...anywhere.
Run flats weight savings is just for me, can't for the life of me get my wife to drive my C8. I hear you on titanium lug nuts but it is known 7075 tempered aluminum do show a higher hardness than titanium. Splitting hairs and who cares.
Run flats weight savings is just for me, can't for the life of me get my wife to drive my C8. I hear you on titanium lug nuts but it is known 7075 tempered aluminum do show a higher hardness than titanium. Splitting hairs and who cares.
+1 on 7075 Aluminum. As an added bonus, it's also still softer than the SS lugs, so if you cross-tread or overtorque them by mistake, the lug nut loses the battle before lugs! I change tires a thousand times (exaggeration) every track season, but never had to replace a lug.
+1 on 7075 Aluminum. As an added bonus, it's also still softer than the SS lugs, so if you cross-tread or overtorque them by mistake, the lug nut loses the battle before lugs! I change tires a thousand times (exaggeration) every track season, but never had to replace a lug.
I ordered two complete sets of rims. One Apex set for track duty….in smaller diameter. Then a
different brand for street set in larger diameter. The Apex by far are the lightest and I’m confident they are the best made rims available.
Track ready Track set mounted. Street set dismounted. Apex close up with gorodisc rotors Apex view Quality Quality
SJ24Vette,
Need a little advice. I am driving myself insane on tire research.
I bought the APEX VS-5RS. Front 19x9.0 (editted) and rear 20x11.5. Is this the same width that you purchased?
I can clearly see your photos that you put 305/30 R20 on the rear (stock Z51 size). And it looks ok. Any problems?
The fronts are really driving me crazy. What front tire size did you run? Stock is 245/35 R19. Technically, that will fit on a 9.5" wide wheel. But it is the absolute limit of stretch. I am not sure if I need/want a 255/35 R19 for the 9.5. Do you have any feedback? I don't want to stretch the tire to the point of hindering performance. And I don't want stanceworks. But I also don't want the tire to rub, so I am not sure if a 255 would rub. And I am not sure of the C8 traction control/ABS will freak-out if I start putting tires that are not the OE diameters.
Any advice would be useful.
If it matters, I have a 2026 1LT Z51 Coupe.
Last edited by Gmund Origin; Yesterday at 08:25 PM.
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