Help, need more tire..
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 3,398
Likes: 2
From: Allentown PA
Help, need more tire..
I've been trying to get a decent pass out of my MT 275/40/17's all year, but it looks like it's not going to happen. I spin half way into first gear, completly through second into 3rd. So basically I go from mid way through 1st to 3rd.
I have about 670RWHP
The car is a C6 Z51 A6. Any recomendations on a wider tire, that will fit? I've varied my pressure, burnout, etc...
I have about 670RWHP
The car is a C6 Z51 A6. Any recomendations on a wider tire, that will fit? I've varied my pressure, burnout, etc...
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
What width rim are you using them on?
And how old are they?
Others have gotten that tire well into the 9s on low 1.4x sixty foots with some consistency but that's on a relatively well prepped track as well.
I know new tires are cheaper than suspension but you might need some Pfadt pieces under there (if you don't already have them that is).
And how old are they?
Others have gotten that tire well into the 9s on low 1.4x sixty foots with some consistency but that's on a relatively well prepped track as well.
I know new tires are cheaper than suspension but you might need some Pfadt pieces under there (if you don't already have them that is).
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 3,398
Likes: 2
From: Allentown PA
17X9.5 rims
They, along with the car, have 14 passes and about 200 street miles.
My 60's arent too bad, its after the 60 foot that they lose grip. My 60 foots are 1.5-1.6, but my 1/8 miles traps are down, which of course, is killing my overall ET's.
They, along with the car, have 14 passes and about 200 street miles.
My 60's arent too bad, its after the 60 foot that they lose grip. My 60 foots are 1.5-1.6, but my 1/8 miles traps are down, which of course, is killing my overall ET's.
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
You have a few choices that will still fit on that rim, the M/T 295-45-17s being a little wider and having a little more sidewall might help but being taller they will also steal some of the gearing away.
You can also try the 17" (26-11.5-17) ET Street bias plies which are taller than the 275s but a little shorter than the 295s but I would only use them with skinnies on the front.
Some will suggest just a swap to another 275-40-17 such as the Hoosiers but if the M/Ts really aren't hooking at all then I don't think the Hoosiers in that same size are going to be quite enough either.
As a last resort, keep these tires and just run slightly less boost (I know, that's not quite as fun LOL) and you might actually still go quicker due to better/full traction for the entire pass.
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
I personally don't like a 315 on only a 9.5" wide rim but many have used that combo with great success.
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 3,398
Likes: 2
From: Allentown PA
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Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 3,398
Likes: 2
From: Allentown PA
I should probably just buy a drag pack and be done with it, but I'm too cheap. If you know of any for a decent price, let me know..
Team Owner
Joined: Feb 2001
Posts: 27,254
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From: Short Hills, NJ
It is a relatively small sidewall but being a sticker/softer Hoosier drag radial does make up for much of that.
I know Gary (fastest bolt on C6 Z06) has used that combo in the past and achieved some great results.
It's definitely safe and even within 'spec' but just not ideal in my opinion. For 'maximum performance' (especially on a 670rwhp car) I think that tire really needs a 10"-11" wide rim.
I know Gary (fastest bolt on C6 Z06) has used that combo in the past and achieved some great results.
It's definitely safe and even within 'spec' but just not ideal in my opinion. For 'maximum performance' (especially on a 670rwhp car) I think that tire really needs a 10"-11" wide rim.
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
The other issue is that you always run at Beaver Springs, nice laid back track, but I doubt the track prep rivals any of the top east coast tracks.
Thread Starter
Melting Slicks
Joined: Nov 2002
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From: Allentown PA
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Just a little traveling to a Cecil/Atco/Maple Grove/E-town could potentially solve much of the issue and do it with no tire change at all.
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Le Mans Master
Joined: Jun 2003
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From: 2007 Nat'l Corvette Challenge 11.50 index Champ. New Jersey
Need more tire?????
I think you need more driver Dave!
Just kidding pal!
As mentioned, I'd get to a respectable track with very good prep (Atco,MIR) and see how she performs before you go hitting the panic button! The Hoosiers are better and lighter then the MT's.
Good luck!
Ron
Just kidding pal!
As mentioned, I'd get to a respectable track with very good prep (Atco,MIR) and see how she performs before you go hitting the panic button! The Hoosiers are better and lighter then the MT's.
Good luck!
Ron
Thread Starter
Melting Slicks
Joined: Nov 2002
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From: Allentown PA
Last week there was a 2003 Cobra that snapped off all 10 lug nuts off while launching, and that was on street tires. It was quite humerous as well.
I have tried Island Dragway with no better results, its no Etown, but at least its in Jersey!
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
If I get any traction at Etown, I'll try the Hoosiers. But you guys would be surprised at how good the traction is at Beaver Springs. Last year they resurfaced it and this past year bought new equipment to prep it. My previous car NEVER spun the tires there, but I had ET streets and a little less power. There are many, many cars that hit the 60 foot mark on two wheels as well.
Last week there was a 2003 Cobra that snapped off all 10 lug nuts off while launching, and that was on street tires. It was quite humerous as well.
I have tried Island Dragway with no better results, its no Etown, but at least its in Jersey!
Last week there was a 2003 Cobra that snapped off all 10 lug nuts off while launching, and that was on street tires. It was quite humerous as well.
I have tried Island Dragway with no better results, its no Etown, but at least its in Jersey!
Some do complain about the E-town prep, but trust me, Island is no E-town! Good to know about Beaver Springs though.