B Stead

If reading the autocross rules for Super Street or for Super Street-R then there is a better selection of tires for the base C7:

Super Street autocross class
140 treadwear tires in 2014 and 200 treadwear tires in 2015
Wheel width must be the same as OEM
Wheel offset can vary by 1/4"
Wheel diameter can vary by 1"

Super Street-R autocross class
R-comp tires allowed but not required
Wheel width must be the same as OEM
Wheel offset can vary by 1/4"
Wheel diameter must be the same as OEM

And so in the Super Street-R class the Z51 can't change wheel diameters to find a selection of tires.

Well, here are setups for Super Street-R:

Hoosier R6 (A6 not available in the sizes) *
255/40-18, 8.5" to 10" wheel width, 26.2" diameter
295/35-19, 10" to 12" wheel width, 27.3" diameter

Pirelli PZero Corsa (limited availability) (tread pattern differs front to rear)
255/35-19
295/30-20

Or a shorter diameter for Super Street-R:

Toyo R888
255/35-18, 8.5" to 10" wheel width, 25.1" diameter
295/30-19, 10" to 12" wheel width, 26" diameter

Of if going out of wheel width spec in Super Street-R:

R888 *
265/35-18, 9" to 10.5" wheel width, but 8.5" wheel width must be used
305/30-19, 10.5" to 11.5" wheel width, 26.5" diameter, but 10" wheel width must be used


Then setups for Super Street:

R-S3
245/40-19, 26.7" diameter
285/35-20, 27.9" diameter

Ecsta XS or RE11 (but not the most recent of the autocross tires) (XS treadwear rating not allowed in 2015)
245/40-18, 25.7" diameter
285/35-19, 26.9" diameter

But then if going out of wheel spec for Super Street:

R-S3 *
265/35-18, 9" to 10.5" wheel width, 25.6" diameter, but 8.5" wheel width must be used
305/30-19, 10.5" to 11.5" wheel width, 26.3" diameter, but 10" wheel width must be used

Pilot Sport Cup 2 (limited availability) (not allowed in 2015)
275/35-19, 9" to 10.5 wheel width, but 8.5" wheel width must be used
305/30-20, 10.5" to 11.5" wheel width, but 10" wheel width must be used



* These are the most likely choices however the Z51 can't change wheel diameters in Super Street-R but can change wheel diameters in Super Street.

.

Big Lebowski

Didn't bother me....Not only is it a "Corvette Forum" I think it's relevant to the original question if a 1LT enough, as his pictures dramatically show, you bet your A$$ a 1LT is enough!

Supersonic 427

I have a 1LT, 7MT Non Z51 with NPP and it is absolutely perfect for me.

HummelS

I cancelled the Z51 option on the C7 when it went on constraint. imho, this car handles just as well as my 2013 GS (which is basically Z51-level equipment.) Of course, I'm not pushing it on the track, but it's pretty damn good. Plenty firm - you know you're in a sportscar.

I do not have the "performance" exhaust. This car has a pretty nice "bark" just as it is. As I have said in other posts, I do not need the extra attention a loud exhaust would bring.

3 Z06ZR1

I like the non z51 gears better and I have a Z51!
2008 I went non Z51 when the tires and wheels were the same size.
But the look of the z51 19-20 wheels and tires is better in my eyes.

JoesC5

Every C6 GS built had the Z51 RPO included. I have always considered the C6 GS as a Z51 on steroids due to the Z06 brakes and wheel/tires added to the required Z51 RPO.

JoesC5

Why, when the lower gear ratios used in the Z51 RPO provide increased torque multiplication in 1st, 2nd and 3rd gears, for quicker acceleration?

Diver Down

Z51 is a no brainer at the lower price (before the increase). You get a LOT for the money. The bigger wheels and brakes look much better on this car. The electronically controlled rear diff increases the performance when it comes to handling. If you ever plan on laying on the car the dry sump insures oil pressure through fast, tight turns.

Z51 option was a must have for my order.

jackhall99

At $2,800 (lower price), the contents of the Z51 package was a bargain. At the new price of $1,200 more, it remains a bargain.

gthal

Larry/car

Exactly what GM said at Carlisle, they talked me out of the Z51 option package. I'm not getting NPP. I'm told the C7's stock exhaust note is louder than the stock C6's. At Carlisle only the NPP system was demonstrated the day I attended. That saved me $5,000 when you add tax and magnetic ride. The base's higher gearing will also increase your car's mileage.

JoesC5

It was nice when GM offered the performance axle with the auto transmission as a stand alone option, if you didn't want the stiffer Z51 suspension. I think I paid $100 for it on my C5. I test drove a C5 with the base rear axle ratio and it was lazy so I ordered my C5 with the performance axle ratio and it really woke the C5 up.

dpb

I went base 1LT and it is way better then my 2LT C6. Having said that, I miss the HUD, memory seats, heated(and now vented) seats, monochromatic mirror, and garage door opener. If I could do it over I would go Base 2LT. This is one beautiful car!!!
dpb

pgway

Especially since it is a totally stripped base unit!
Canadian you know.

gthal

Hey, hey hey now... there are lots of Canadian's who only post pictures when needed

Supersonic 427

A 1LT even with no options is still a nicely equipped Corvette. It is not as if they come with roll up windows, cloth seats and no AC! LOL! I really don't miss the HUD, heated seats and the other items that come with 2LT. (Have had them on many previous Vettes) I am also not missing the Z51 pkg as this car will never see a drag strip or a track! Besides, all the performance numbers are very close between the two. Mine is a DD and all that I wanted was a 7 speed manual and the NPP exhaust.
Would I enjoy a loaded Z51 3LT that lists for 20 something grand more?...maybe just a little more, but not much more...they are the same car!

Modshack

and don't forget....probably 95% here will never utilize the Z51's performance advantages. .... (let alone those of the base car).

Gives you bragging rights though..

Yamanator

These posts are the best of the thread. Tho my order is for a Z51. For anyone who's gonna do track days get the Z51. If you drive the street only then it's really a waste. The only argument for getting it would be resale because people just "gotta have it" even tho most will NEVER use the potential of it.

Finally at the end of the day buy what you want! If you want the damn hud or heated seats then get the upgraded package! Can't take it with you folks...

kp

+1

But as far as resale most dealers will care less if it has the Z51 option or not come trade-in time. Private sale it may make it easier to sell, unless more potential buyers at the time are looking for non Z51 equipped cars

The Z51 option on C6s didnt really raise the desireability much, but on the C6 forums you didnt dare call your C6 a Z51 so its not the same I guess. Just like the C7 I thought the Z51 performance package on the C6 was a pretty good deal at 1700.00 or whatever it was.

Nyvetteguy007

+1 on the NPP...also my opinion