Adding unsprung weight...
Thread Starter
Pro
Joined: Apr 2013
Posts: 694
Likes: 102
From: CA
Adding unsprung weight...
I'm considering running replica ZO6 wheels on my car. They are 1/3 the cost of originals. However, they add 7 lbs each. Would this extra weight have a noticeable affect on the ride? Handling? Component wear? I use the car almost exclusively for track events.
Thread Starter
Pro
Joined: Apr 2013
Posts: 694
Likes: 102
From: CA
Intermediate
Joined: Oct 2014
Posts: 46
Likes: 5
A replica set of 4 wheels is $450. One new Speedline wheel is $300. I don't really want to mess with used.
Instructor
Joined: Sep 2008
Posts: 161
Likes: 28
I have 7 sets of wheels and tires that I rotate between 4 cars. I am never less than amazed when I switch from my heaviest(56lbs) to my lightest(42lbs) on my C5. It is night and day in terms of braking and accelerating.
The latest issue of car and driver tests a GT350 vs GT350r with the carbon wheels in acceleration.
Only difference was the 14lb lighter carbon wheels.
30-50, 10.8 vs 9.9 (top gear)
50-70, 10.5 vs 9.7 (top gear)
30-130, 17.7 vs 16.5 (4th gear)
The latest issue of car and driver tests a GT350 vs GT350r with the carbon wheels in acceleration.
Only difference was the 14lb lighter carbon wheels.
30-50, 10.8 vs 9.9 (top gear)
50-70, 10.5 vs 9.7 (top gear)
30-130, 17.7 vs 16.5 (4th gear)
Le Mans Master
Joined: Nov 2005
Posts: 5,403
Likes: 31
From: Allentown PA & Elk Twp NJ HPDE Addict
Personally I wouldn't touch replicas for track use. Too much risk of a wheel failure. Had a friend with replicas who cracked the spokes. Fortunately he caught the failure before it became catastrophic. Keep in mind it isn't only your life you're responsible for, but also those on the track with you.
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
I have 7 sets of wheels and tires that I rotate between 4 cars. I am never less than amazed when I switch from my heaviest(56lbs) to my lightest(42lbs) on my C5. It is night and day in terms of braking and accelerating.
The latest issue of car and driver tests a GT350 vs GT350r with the carbon wheels in acceleration.
Only difference was the 14lb lighter carbon wheels.
30-50, 10.8 vs 9.9 (top gear)
50-70, 10.5 vs 9.7 (top gear)
30-130, 17.7 vs 16.5 (4th gear)
The latest issue of car and driver tests a GT350 vs GT350r with the carbon wheels in acceleration.
Only difference was the 14lb lighter carbon wheels.
30-50, 10.8 vs 9.9 (top gear)
50-70, 10.5 vs 9.7 (top gear)
30-130, 17.7 vs 16.5 (4th gear)
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Racer
Joined: Jan 2015
Posts: 290
Likes: 55
1. You will definitely notice 7lbs difference per corner.
2. I would not recommend running replica's.
3. Try to buy new. Seems everytime I buy used wheels I find something that makes me regret it. House of Wheels is a great vendor. A set should run about $1200 new.
You will regret not spending the extra for new speedline/alcoa's and I guarantee you will pay for it at some point.
2. I would not recommend running replica's.
3. Try to buy new. Seems everytime I buy used wheels I find something that makes me regret it. House of Wheels is a great vendor. A set should run about $1200 new.
You will regret not spending the extra for new speedline/alcoa's and I guarantee you will pay for it at some point.
Le Mans Master
Joined: Apr 2001
Posts: 9,556
Likes: 288
From: Granbury Texas
1. You will definitely notice 7lbs difference per corner.
2. I would not recommend running replica's.
3. Try to buy new. Seems everytime I buy used wheels I find something that makes me regret it. House of Wheels is a great vendor. A set should run about $1200 new.
You will regret not spending the extra for new speedline/alcoa's and I guarantee you will pay for it at some point.
2. I would not recommend running replica's.
3. Try to buy new. Seems everytime I buy used wheels I find something that makes me regret it. House of Wheels is a great vendor. A set should run about $1200 new.
You will regret not spending the extra for new speedline/alcoa's and I guarantee you will pay for it at some point.
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
If you check on the Roadrace and Autocross forum, the members there tend to run four (4) 10.5X18" REAR wheels. One reason is that more suitable track tires are available in the 18" size than any other. I would recommend that you just go on line and look for 4 used rear 10X18 Corvette whels. They are usually available at reasonable price point.
C5 z06 18x10.5 speedline wheels f/s
Last edited by NemesisC5; Jan 23, 2016 at 05:00 PM. Reason: Corrected price and added link.
Racer
Joined: Jan 2015
Posts: 290
Likes: 55
If you check on the Roadrace and Autocross forum, the members there tend to run four (4) 10.5X18" REAR wheels. One reason is that more suitable track tires are available in the 18" size than any other. I would recommend that you just go on line and look for 4 used rear 10X18 Corvette whels. They are usually available at reasonable price point.
Safety Car
Joined: Nov 2013
Posts: 3,575
Likes: 1,107
From: Ex DPRK, now just N of Medford, OR
Been tracking for a LONG time... every time I try to pinch pennies, it's cost me more in the long run.
Buy the right wheels, buy them once.
Buy the wrong thing, throw it away, then buy the right one.
Only followed the second plan about a zillion times...
Buy the right wheels, buy them once.
Buy the wrong thing, throw it away, then buy the right one.
Only followed the second plan about a zillion times...
Racer
Joined: Jan 2015
Posts: 290
Likes: 55
Le Mans Master
Joined: Oct 2005
Posts: 9,429
Likes: 44
From: Macon, GA
1. You will definitely notice 7lbs difference per corner. Most folks won't.
2. I would not recommend running replica's. I agree 100%.
3. Try to buy new. Doesn't really matter as long as they're straight.
House of Wheels is a great vendor. Not true at all. Customer service is a joke. Folks think they're great simply because they offer OEM C5Z wheels that are high in demand and they keep them in stock. The owner is really an unreasonable A-hole.
It would actually benefit everyone if other vendors had access to whatever supplier he's getting them from. House of Wheels essentially has a monopoly on OEM C5Z wheels which is not good for consumers.
2. I would not recommend running replica's. I agree 100%.
3. Try to buy new. Doesn't really matter as long as they're straight.
House of Wheels is a great vendor. Not true at all. Customer service is a joke. Folks think they're great simply because they offer OEM C5Z wheels that are high in demand and they keep them in stock. The owner is really an unreasonable A-hole.
It would actually benefit everyone if other vendors had access to whatever supplier he's getting them from. House of Wheels essentially has a monopoly on OEM C5Z wheels which is not good for consumers.
Last edited by sperkins; Jan 24, 2016 at 01:39 PM.