GT500 Wheel Weight vs. Sock 17" Bullits
05-28-2009, 10:25 PM
#1
3rd Gear Member
Thread Starter
Join Date: Aug 2007
Location: Orlando, Florida
Posts: 518
GT500 Wheel Weight vs. Sock 17" Bullits
Ok well a great deal fell into my lap tonight, American Muscle Replica GT500's with Falken tires for $250. I was wondering how the wheel/tire package weight compares to the stock 17" wheel tire package right now. I know the GT500 wheel itself is several pounds heavier then the stock wheel but it has less rubber on it. Let's say the stock 17" with stock tires (235's) vs. the 18" GT500's with I think it was 255x45 all around. Anyone know which is taller overall also? I don't want to reduce the rear axle ratio too much. 4.10's I the future though.
05-28-2009, 11:31 PM
#3
2nd Gear Member
Join Date: Aug 2008
Location: Chicago, IL
Posts: 443
I recently had 20" Saleen Extreme wheels put on and I can tell a difference in my acceleration (a little slower) especially at 60 mph.
I think I need to put in new gears but I'm afraid of how expensive the install might be and also what problems I might have.
My point is, that you may notice a difference cause I sure did (I had 17" Stock Bullitt Wheels).
I think I need to put in new gears but I'm afraid of how expensive the install might be and also what problems I might have.
My point is, that you may notice a difference cause I sure did (I had 17" Stock Bullitt Wheels).
05-29-2009, 12:20 AM
#4
3rd Gear Member
Thread Starter
Join Date: Aug 2007
Location: Orlando, Florida
Posts: 518
05-29-2009, 05:24 PM
#6
2nd Gear Member
Join Date: Nov 2008
Location: Va
Posts: 171
255/45R18 are the same diameter as 235/55R17. So, that's good!
What may not make you happy are the wheel weights. The Shelby wheels are the heaviest Ford wheels for our car, they are also the largest to handle the 285/40R18 tires, and a knock off Chinese wheel is almost certainly going to be heavier.
Factory wheel weights:
17X8 machined aluminum wheels = 22 lbs.
18X9.5 GT-500 wheels = 28 lbs.
17X8 Stock Bullitt Style Wheels = 21.6 lbs.
18X8.5 Fan Blades = 26.5 lbs, Painted = 27.5 lbs
18X8.5 Chrome Bullitt Wheels = 26.5 lbs.
Stock tires weigh 28 lbs a piece. That means a total weight of about 50 lbs.
Let's assume your Chinese wheels weigh the same as the factory wheels that's 28 lbs. The tires are probably 29 lbs to 30 lbs. We'll call it 57 lbs per wheel/tire.
You should be adding 7 lbs of unsprung weight per wheel for a total of 28 lbs. I'd expect a higher quarter mile time. I believe you're suppose to multiply rotational weight by 3 or 4. (BTW. That's why a lightweight driveshaft offers gains on our cars.) Adding those wheels and tires are like adding 84 - 112 lbs of static weight!
Lightweight wheels are expensive, but do make a difference. Mine weigh 19 lbs per wheel. Total weight per wheel/tire is a little over 48 lbs, even with 255/45R18 tires. That's almost 2 lbs less per wheel less than my 17 inch factory wheels and 235/55R17 tires. My wheels are only 18X8 wheels, which is fine, since I plan on keeping 255/45R18 size tires for the life of the car.
Here's a Tire Rack article on it...
http://www.tirerack.com/wheels/tech/...jsp?techid=108
In this example they reduced the factory weight by only 3 lbs and saw a pretty impressive gain. The heavy wheels they added to the test BMW weighed 6.5 lbs more than stock.
What may not make you happy are the wheel weights. The Shelby wheels are the heaviest Ford wheels for our car, they are also the largest to handle the 285/40R18 tires, and a knock off Chinese wheel is almost certainly going to be heavier.
Factory wheel weights:
17X8 machined aluminum wheels = 22 lbs.
18X9.5 GT-500 wheels = 28 lbs.
17X8 Stock Bullitt Style Wheels = 21.6 lbs.
18X8.5 Fan Blades = 26.5 lbs, Painted = 27.5 lbs
18X8.5 Chrome Bullitt Wheels = 26.5 lbs.
Stock tires weigh 28 lbs a piece. That means a total weight of about 50 lbs.
Let's assume your Chinese wheels weigh the same as the factory wheels that's 28 lbs. The tires are probably 29 lbs to 30 lbs. We'll call it 57 lbs per wheel/tire.
You should be adding 7 lbs of unsprung weight per wheel for a total of 28 lbs. I'd expect a higher quarter mile time. I believe you're suppose to multiply rotational weight by 3 or 4. (BTW. That's why a lightweight driveshaft offers gains on our cars.) Adding those wheels and tires are like adding 84 - 112 lbs of static weight!
Lightweight wheels are expensive, but do make a difference. Mine weigh 19 lbs per wheel. Total weight per wheel/tire is a little over 48 lbs, even with 255/45R18 tires. That's almost 2 lbs less per wheel less than my 17 inch factory wheels and 235/55R17 tires. My wheels are only 18X8 wheels, which is fine, since I plan on keeping 255/45R18 size tires for the life of the car.
Here's a Tire Rack article on it...
http://www.tirerack.com/wheels/tech/...jsp?techid=108
In this example they reduced the factory weight by only 3 lbs and saw a pretty impressive gain. The heavy wheels they added to the test BMW weighed 6.5 lbs more than stock.
Last edited by mustangtestuser; 05-29-2009 at 05:52 PM.
05-29-2009, 05:55 PM
#7
1st Gear Member
Join Date: Apr 2009
Location: Ohio
Posts: 66
I have the GT 500 wheels which replaced the stock 17 inch bullitts. They are heavier for sure and do slow your car down. I am using the stock rims to go to the track with MT ET Streets. The wheels look great but they will slow you down.
05-29-2009, 07:36 PM
#8
Join Date: Jan 2009
Location: PR
Posts: 29
255/45R18 are the same diameter as 235/55R17. So, that's good!
What may not make you happy are the wheel weights. The Shelby wheels are the heaviest Ford wheels for our car, they are also the largest to handle the 285/40R18 tires, and a knock off Chinese wheel is almost certainly going to be heavier.
Factory wheel weights:
17X8 machined aluminum wheels = 22 lbs.
18X9.5 GT-500 wheels = 28 lbs.
17X8 Stock Bullitt Style Wheels = 21.6 lbs.
18X8.5 Fan Blades = 26.5 lbs, Painted = 27.5 lbs
18X8.5 Chrome Bullitt Wheels = 26.5 lbs.
Stock tires weigh 28 lbs a piece. That means a total weight of about 50 lbs.
Let's assume your Chinese wheels weigh the same as the factory wheels that's 28 lbs. The tires are probably 29 lbs to 30 lbs. We'll call it 57 lbs per wheel/tire.
You should be adding 7 lbs of unsprung weight per wheel for a total of 28 lbs. I'd expect a higher quarter mile time. I believe you're suppose to multiply rotational weight by 3 or 4. (BTW. That's why a lightweight driveshaft offers gains on our cars.) Adding those wheels and tires are like adding 84 - 112 lbs of static weight!
Lightweight wheels are expensive, but do make a difference. Mine weigh 19 lbs per wheel. Total weight per wheel/tire is a little over 48 lbs, even with 255/45R18 tires. That's almost 2 lbs less per wheel less than my 17 inch factory wheels and 235/55R17 tires. My wheels are only 18X8 wheels, which is fine, since I plan on keeping 255/45R18 size tires for the life of the car.
Here's a Tire Rack article on it...
http://www.tirerack.com/wheels/tech/...jsp?techid=108
In this example they reduced the factory weight by only 3 lbs and saw a pretty impressive gain. The heavy wheels they added to the test BMW weighed 6.5 lbs more than stock.
What may not make you happy are the wheel weights. The Shelby wheels are the heaviest Ford wheels for our car, they are also the largest to handle the 285/40R18 tires, and a knock off Chinese wheel is almost certainly going to be heavier.
Factory wheel weights:
17X8 machined aluminum wheels = 22 lbs.
18X9.5 GT-500 wheels = 28 lbs.
17X8 Stock Bullitt Style Wheels = 21.6 lbs.
18X8.5 Fan Blades = 26.5 lbs, Painted = 27.5 lbs
18X8.5 Chrome Bullitt Wheels = 26.5 lbs.
Stock tires weigh 28 lbs a piece. That means a total weight of about 50 lbs.
Let's assume your Chinese wheels weigh the same as the factory wheels that's 28 lbs. The tires are probably 29 lbs to 30 lbs. We'll call it 57 lbs per wheel/tire.
You should be adding 7 lbs of unsprung weight per wheel for a total of 28 lbs. I'd expect a higher quarter mile time. I believe you're suppose to multiply rotational weight by 3 or 4. (BTW. That's why a lightweight driveshaft offers gains on our cars.) Adding those wheels and tires are like adding 84 - 112 lbs of static weight!
Lightweight wheels are expensive, but do make a difference. Mine weigh 19 lbs per wheel. Total weight per wheel/tire is a little over 48 lbs, even with 255/45R18 tires. That's almost 2 lbs less per wheel less than my 17 inch factory wheels and 235/55R17 tires. My wheels are only 18X8 wheels, which is fine, since I plan on keeping 255/45R18 size tires for the life of the car.
Here's a Tire Rack article on it...
http://www.tirerack.com/wheels/tech/...jsp?techid=108
In this example they reduced the factory weight by only 3 lbs and saw a pretty impressive gain. The heavy wheels they added to the test BMW weighed 6.5 lbs more than stock.
06-01-2009, 11:20 PM
#9
3rd Gear Member
Thread Starter
Join Date: Aug 2007
Location: Orlando, Florida
Posts: 518
255/45R18 are the same diameter as 235/55R17. So, that's good!
What may not make you happy are the wheel weights. The Shelby wheels are the heaviest Ford wheels for our car, they are also the largest to handle the 285/40R18 tires, and a knock off Chinese wheel is almost certainly going to be heavier.
Factory wheel weights:
17X8 machined aluminum wheels = 22 lbs.
18X9.5 GT-500 wheels = 28 lbs.
17X8 Stock Bullitt Style Wheels = 21.6 lbs.
18X8.5 Fan Blades = 26.5 lbs, Painted = 27.5 lbs
18X8.5 Chrome Bullitt Wheels = 26.5 lbs.
Stock tires weigh 28 lbs a piece. That means a total weight of about 50 lbs.
Let's assume your Chinese wheels weigh the same as the factory wheels that's 28 lbs. The tires are probably 29 lbs to 30 lbs. We'll call it 57 lbs per wheel/tire.
You should be adding 7 lbs of unsprung weight per wheel for a total of 28 lbs. I'd expect a higher quarter mile time. I believe you're suppose to multiply rotational weight by 3 or 4. (BTW. That's why a lightweight driveshaft offers gains on our cars.) Adding those wheels and tires are like adding 84 - 112 lbs of static weight!
Lightweight wheels are expensive, but do make a difference. Mine weigh 19 lbs per wheel. Total weight per wheel/tire is a little over 48 lbs, even with 255/45R18 tires. That's almost 2 lbs less per wheel less than my 17 inch factory wheels and 235/55R17 tires. My wheels are only 18X8 wheels, which is fine, since I plan on keeping 255/45R18 size tires for the life of the car.
Here's a Tire Rack article on it...
http://www.tirerack.com/wheels/tech/...jsp?techid=108
In this example they reduced the factory weight by only 3 lbs and saw a pretty impressive gain. The heavy wheels they added to the test BMW weighed 6.5 lbs more than stock.
What may not make you happy are the wheel weights. The Shelby wheels are the heaviest Ford wheels for our car, they are also the largest to handle the 285/40R18 tires, and a knock off Chinese wheel is almost certainly going to be heavier.
Factory wheel weights:
17X8 machined aluminum wheels = 22 lbs.
18X9.5 GT-500 wheels = 28 lbs.
17X8 Stock Bullitt Style Wheels = 21.6 lbs.
18X8.5 Fan Blades = 26.5 lbs, Painted = 27.5 lbs
18X8.5 Chrome Bullitt Wheels = 26.5 lbs.
Stock tires weigh 28 lbs a piece. That means a total weight of about 50 lbs.
Let's assume your Chinese wheels weigh the same as the factory wheels that's 28 lbs. The tires are probably 29 lbs to 30 lbs. We'll call it 57 lbs per wheel/tire.
You should be adding 7 lbs of unsprung weight per wheel for a total of 28 lbs. I'd expect a higher quarter mile time. I believe you're suppose to multiply rotational weight by 3 or 4. (BTW. That's why a lightweight driveshaft offers gains on our cars.) Adding those wheels and tires are like adding 84 - 112 lbs of static weight!
Lightweight wheels are expensive, but do make a difference. Mine weigh 19 lbs per wheel. Total weight per wheel/tire is a little over 48 lbs, even with 255/45R18 tires. That's almost 2 lbs less per wheel less than my 17 inch factory wheels and 235/55R17 tires. My wheels are only 18X8 wheels, which is fine, since I plan on keeping 255/45R18 size tires for the life of the car.
Here's a Tire Rack article on it...
http://www.tirerack.com/wheels/tech/...jsp?techid=108
In this example they reduced the factory weight by only 3 lbs and saw a pretty impressive gain. The heavy wheels they added to the test BMW weighed 6.5 lbs more than stock.
06-02-2009, 02:21 AM
#10
5th Gear Member
Join Date: Jun 2007
Location: City of God
Posts: 2,358
I say go for it man regardless of the wieght, if your serious about the track you will have a set of diff tires anyway.....
are those the rims you really wanted though? If I was you I woud buy them then sell them for more and maybe wait to get what you want exactly, a deal is a deal but sometimes its better to wait for exactly what you want rather then just doing something cause its a good deal, especially if you can flip them and at that price you can forsure.
are those the rims you really wanted though? If I was you I woud buy them then sell them for more and maybe wait to get what you want exactly, a deal is a deal but sometimes its better to wait for exactly what you want rather then just doing something cause its a good deal, especially if you can flip them and at that price you can forsure.
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