rideintothesun

Any links please?

Racer

Now your just being silly....again.

Andrew M

How so?

And back on R compound tires, I just threw away a set of used v700 Kumho's with over 9k miles on them. If you use your tires as intended(not wasting them on burn outs) they last for some time.

Kyle Lemish

Important Notice: Kumho Ecsta V700 tires must be shaved to 3/32" - 4/32" tread depth for any autocross or track use in the dry.

Kumho advises that the Ecsta V700 DOT-legal competition radial must be shaved prior to use in dry conditions. If this tire is not shaved, excessive wear may occur causing the tire to wear to the cords prematurely in a localized area.

Tire heat cycling will not prevent the excessive localized wear of full tread depth tires but will continue to enhance tire consistency and wear on shaved tires.

The Ecsta V700 should only be used at full tread depth (6/32") for wet track and wet autocross use.


That taken directly from tirerack, so your saying your getting 9000 miles out of a set of tires that start out with 4/32nds of tread on soft rubber? or you are useing them as wet surface tires? please enlighten me to how your getting such life out of the tires? What kind of car are they on? And if your not tracking them why would you be running R comp tires? I used to do FATT and Car guys events at summit point and the tires I ran were good for maybe 2 week ends at best and I only live 100 miles from the track. I did drive there on them and useually had about 6 25 minute sessions per weekend and like I said about 2 events was it for shaved R tires.

RBK

A clarification question, no axe to grind, no hidden agenda.

I raced a SCCA T-1 C6 LS2 (bone stock motor) at 3300lbs and did a 2:04 (Record is 2:01). We drove the full length of the track so the ZR1 taking 40 seconds longer to get around sounds like I am missing something. I was on Hoosier A6's. Best

Kyle Lemish

They run it on the "Grand course" which I believe is the longest lap that they can run there..I believe the full course is 3.2 miles and the grand course is well over 4 miles...and from what I can remember the Z06 was the first production car to break 3 minute lap on the grand course....

drivinhard

You don't bring the car "up". Putting 2 stock cars on the same compound tires on the same track simply puts them on equal footing (no pun intended).

I don't have a problem running them in stock trim for stock bragging rights on stock tires. I don't doubt the Viper is faster. I also don't doubt an R compound tire is faster than a street tire, regardless of car, so in my mind, there's really no comparison taking place if 2 cars are competing against each other on totally different tires.

Regardless of mods, hp, brakes, whatever, the ONLY connection between the track, and the car, are the tires. If you are trying to truly compare the performance of 2 cars with anything other than the same track to car friction surface, it's flawed IMHO.

drivinhard

The grand course peels you off to the right on the backstraight, and you wind your way around most of the patriot course, before coming back to end of the backstraight.

The full course is probably as good of a test of a car as any, peeling off early for the grand course on the backstraight makes the straight shorter and the braking less severe than it would be running the full length of it, both of which test a car well.

NytmereZ

Maybe Onerareviper can chime in on what track the Viper ACR could not use its R compound tires due to safety regulation, all car testeted had to use the same tires, the Viper still stomped on the Mosler, which stomped on the ZR1 on the track, like may people have said before the ACR is more than tires, and is upgraged this year it tops out at 202mph, and beats its previous track record by a good margin, yet still uses the same tires. This subject has been beaten to death. Different cars for different people, both factory street cars, period. The new ACR is know way comfortable, like the ZR1, it rides more like a C4. This is my personal experience in actually driving both cars, not reading a magazine article. I truly hope the stock Viper never posts a beter time in the 1/4(even by a fuke of a perfect run, DA 40mph backwinds etc, I dont want to see all the excusesfor that one. Just give credit where credit is due, both cars are super performers, both have their strong and weak points, just like every other car. Now just wating for this post to get locked

Racer

Having followed ALL your posts in the ZR1 section, you clearly do not practice what you preach.......nuff said.

NytmereZ

Ok Canadien guy , I practice everthing I preach, do you even have any seat time in either car?, just seem like another pompus old guy, sorry I'm still in my early 30's

thebrander

Maybe here's a better way to look it(?) :

Any "mod" you can have done at Walmart is not significant enough to render the vehicle so far from stock configuration that it's not fair to test against other "Walmart modded" cars ().

racerns

I have never seen a "test" of the ACR not on PSCs. You may be talking about when they ran the ACR in the One Lap and it had to use regular PS2s due to the rules. That car was not stock and the nature of the One Lap is not a good place to try and compare how stock cars fair against each other since the driver skill varies greatly and most of the cars have been modified. Years ago, I finished 13th overall in a '95 Firebird beating many other "faster" cars. Also, the new top speed of the ACR is 184mph not 202 mph as some have reported.

You have repeatedly shown that you do not know as much as you think you do with your posts on this board by not being able to grasp the concept of total gearing, not knowing what a cracked rod is, and throwing out silly comparisons. You have lost credibility in my book.

I was hoping that the Lightning Lap this year would include both the ZR1 and ACR so we could finally see a true comparison on the cars since that has not been done yet. I have no doubt that the ACR would be faster but I wanted to see what the true difference would be on the same track, same day, and same driver. I am not sold that the lap time difference between the cars could not be made up be running on the same tires.

Racer

First of all, you keep bringing up the fact I am Canadian and follow it with a Do you have a problem with this fact?
Second, please learn how to spell my nationality, it is rude or should I say ignorant. I don't call you Amaricon.
Third, you also have some fixation on your age, what's up with that?

jvp

Of note with R compounds: It really depends on the road material and the general temperatures the tires are used in. Our roads here in VA are pretty sand-paper-like, and will destroy R compounds pretty damn quickly. I've only been to CA once, and can't really say for sure how their pavement differs from ours. I'll bet it's a good bit different (they don't have to deal with frost, snow, ice, etc on a regular basis).

It's possible that Californians can get 8-9k out of a set of Rs. That still doesn't make them particularly useful for street driving. Just one rainstorm of Biblical proportions will end that thought damn quick.

jas

Kyle Lemish

I do believe that with full tread depth Pilot sport cups in ideal conditions but no way possible with the V700s that are used as intended.

NytmereZ

How old are you kid? dont you drive you dads ZR1?, Losing any credibility in your book doesnt mean much to me, even though I'm 33 Ive been on the dragstrip running 10's long ago(when I was 23m 10's are slow at my track, hell my 9's are slow at the track I race on), when you were riding your bike to school. The cracked rod is a cheap way of manufacturing, I have one of those "cracked rods", as 2 of my weak internaled LS motors have gone boom(on perfect tunes) PM me your e-mail and I'll send you some pictures of how much I dont know about cheap corvette internals, and how lucky your dad is having forged internal stock, as I do in my 10 year old Viper) I understand gear ratio's, but that is only part of the puzzle, the final gear meaning ring and pinion, is the main part of the puzzle, Ive put gears in my mustang(Myself, I believe the 1st gear is 2.96?(not sure) but I still had a final 2.73 ring and pinion, when I personally changed to 3.73, I picked up.7 in the 1/4, the size difference in the pinion alone doesnt take a rocket scentist to figure out accleration. I own amd wrench my own cars as much as I can, gears, halfshafts, exhaust, basically everything but tranny and major engine. I gave you props on getting your dads ZR1 into the 10's, and obviously you are so young, the ZR1 is like a god to you, it is the best car in the world to you, I get it you are young, dont let it get to your head. The new ZR1 is a wonderfull performing car, it personally doesnt justify the price at this point for me to get rid of my Z for it, as I have a vette, still dont like the hood, and have other cars IMO that look beter perform on a different level, levels that you have not acheived yet.

NytmereZ

I dont find the need to spell your nationality correct, my fixation with age is a nice way of telling you that, you sound like an old pompus fart(which you just confirmed), that better? you are like this with everybody, not just me, go take some viagra, and order an escort

Racer

Your an insecure IDIOT plain and simple, and notice I don't hide behind fake

Kyle Lemish

So is it bad to be old or young on this forum? your giving one person crap for being old....the other for being young? Since when did age come into play on this forum? racerns is very knowldgeable in his posts about gearing if you re-read them you may learn a thing or two and can gain from this forum like most of us do in one way or another....Your pompuss attitude may better be suited for the "alley"