Z28 runs 1:36 at Barber! geez!!

Groundpilot · 03-31-2014, 12:39 PM

Quote:

Originally Posted by paradocs98

This is why I ruled the Z/28 out. Consumables will be incredibly expensive. A 3800-lb car will eat through tires (especially those with a treadwear rating <100) and brake pads (even if they are carbon-ceramic brakes) on the track. 305/30-19 Pirelli Trofeo Rs are $560 a piece, and I don't want to know how much replacement brake pads are on the Z/28. I get the feeling that a lot of owners who appropriately track their cars will be in for an unpleasant surprise with running costs.

+1. I doubt we will see to many owners tracking z 28 for that reason you mentioned.

W/// · 03-31-2014, 12:53 PM

Quote:

Originally Posted by paradocs98

This is why I ruled the Z/28 out. Consumables will be incredibly expensive. A 3800-lb car will eat through tires (especially those with a treadwear rating <100) and brake pads (even if they are carbon-ceramic brakes) on the track. 305/30-19 Pirelli Trofeo Rs are $560 a piece, and I don't want to know how much replacement brake pads are on the Z/28. I get the feeling that a lot of owners who appropriately track their cars will be in for an unpleasant surprise with running costs.

I read somewhere it has a treadwear rating of 50

PrimeBMW · 03-31-2014, 01:52 PM

Even the GTR. I have yet to see one driven to the edge of its life and actually finish the day. Sure if you are a beginner/intermediate either car is a ton (or 2) of fun!

Even the ring times.......its a ~7:30-8 min lap. Most cars can hold up for that long. The second lap would be telling. As a track guy I want a car that can finish the day, not break the bank.......oh and it has to be fast.

dapopa9 · 03-31-2014, 02:30 PM

Quote:

Originally Posted by PrimeBMW

Even the GTR. I have yet to see one driven to the edge of its life and actually finish the day. Sure if you are a beginner/intermediate either car is a ton (or 2) of fun!

Even the ring times.......its a ~7:30-8 min lap. Most cars can hold up for that long. The second lap would be telling. As a track guy I want a car that can finish the day, not break the bank.......oh and it has to be fast.

We have quite a few GTR's here in SoCal that track regularly with very fast consistent times and seems they always finish the day.

WinterSoldier · 04-04-2014, 08:19 PM

Quote:

Originally Posted by Groundpilot

+1. I doubt we will see to many owners tracking z 28 for that reason you mentioned.

+1

Triple M · 04-06-2014, 12:43 AM

The big question is, all these cars get tested brand new. Love the latest automobilemag comparison of the E30 M3, E46 M3, and the F80 M3. I wonder how much mileage the E30 and the E46 M3s had on their suspension (love a proper apples to apples comparison). Having said that, running our E92/E90 M3 with high oil temps year after is a testament to the kind of consistent beast it is. Will the Z28 produce same numbers with smaller less expensive tyres and will that LS7 still perform after 80,000 miles like some of the M3 I've seen from this forum. It's the $70,000 question I'd love to get a fair answer to before making that kind of investment (Love the lip though. A little euro que

)

BlueCoyote · 04-06-2014, 07:13 PM

Quote:

Originally Posted by Triple M

The big question is, all these cars get tested brand new. Love the latest automobilemag comparison of the E30 M3, E46 M3, and the F80 M3. I wonder how much mileage the E30 and the E46 M3s had on their suspension (love a proper apples to apples comparison). Having said that, running our E92/E90 M3 with high oil temps year after is a testament to the kind of consistent beast it is. Will the Z28 produce same numbers with smaller less expensive tyres and will that LS7 still perform after 80,000 miles like some of the M3 I've seen from this forum. It's the $70,000 question I'd love to get a fair answer to before making that kind of investment (Love the lip though. A little euro que

)

Well, the LS7 engine is the exact same engine used in the previous generation Z06, so I think it's pretty well time and track tested. In fact, the engine is the last thing I would worry about in that car. I don't think I would ever get used to the cheap, plastic interior. I know the car is all about performance, but for $75k, they could make some kind of effort to differentiate this halo car from the bargain basement V6 model. I also think they should have made the carbon ceramic brakes optional, as they are no doubt restricted in many racing classes. I would think this would lessen the appeal of this car to many club racers, which is who this car seems to be intended for.

But a good lap time is a good lap time.

dapopa9 · 04-07-2014, 01:55 PM

Quote:

Originally Posted by BlueCoyote

Well, the LS7 engine is the exact same engine used in the previous generation Z06, so I think it's pretty well time and track tested. In fact, the engine is the last thing I would worry about in that car.

Actually the LS7 has huge issues in the C6 Z06. Has bad head/valve design issues and oiling issues when tracking. And no idea if they have addressed those on the Z28.

Porschefile · 04-08-2014, 08:35 AM

Completely insane time for a bone stock car. For reference for those of you that don't go to Barber, that is only about 3-4 seconds off a typical time for the formula mazda in my avatar (1200lb tube frame racecar with gigantic wings, slicks, etc.) 3 seconds is a good bit, but not when you're comparing a full blown open wheel racecar to a bone stock chevy. Most E9X M3's don't even get within 10 seconds of a 36 there, even with pretty capable drivers.

03-31-2014, 01:52 PM	#25
PrimeBMW Major 672 Rep 1,424 Posts Drives: E46 M3+S62, E92 M3 Join Date: May 2009 Location: Portland, OR iTrader: (0)	Even the GTR. I have yet to see one driven to the edge of its life and actually finish the day. Sure if you are a beginner/intermediate either car is a ton (or 2) of fun! Even the ring times.......its a ~7:30-8 min lap. Most cars can hold up for that long. The second lap would be telling. As a track guy I want a car that can finish the day, not break the bank.......oh and it has to be fast.
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04-06-2014, 12:43 AM	#28
Triple M Doc Rebel! 31 Rep 324 Posts Drives: Fire Orange M3, X5M, Blk 135 Join Date: Oct 2011 Location: Vegas Baby! iTrader: (0)	The big question is, all these cars get tested brand new. Love the latest automobilemag comparison of the E30 M3, E46 M3, and the F80 M3. I wonder how much mileage the E30 and the E46 M3s had on their suspension (love a proper apples to apples comparison). Having said that, running our E92/E90 M3 with high oil temps year after is a testament to the kind of consistent beast it is. Will the Z28 produce same numbers with smaller less expensive tyres and will that LS7 still perform after 80,000 miles like some of the M3 I've seen from this forum. It's the $70,000 question I'd love to get a fair answer to before making that kind of investment (Love the lip though. A little euro que )
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04-08-2014, 08:35 AM	#31
Porschefile Major 87 Rep 1,250 Posts Drives: E92 M3 Join Date: Jul 2008 Location: Tennessee iTrader: (7)	Completely insane time for a bone stock car. For reference for those of you that don't go to Barber, that is only about 3-4 seconds off a typical time for the formula mazda in my avatar (1200lb tube frame racecar with gigantic wings, slicks, etc.) 3 seconds is a good bit, but not when you're comparing a full blown open wheel racecar to a bone stock chevy. Most E9X M3's don't even get within 10 seconds of a 36 there, even with pretty capable drivers.
	Appreciate 0 Quote