GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

thinking of going from 20's to 18's

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Old May 20, 2008 | 10:04 AM
  #11  
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Originally Posted by Stoichiometric
Some have said to multiply rotational mass X 7 to compare to dead weight. If that holds true than it should feel like ~280lbs less to get moving. I like the look too.
I have read that too. The killer with large diameter wheels is that they may weigh the exact same as a 16" wheel, but the majority of the weight is farther out from the center of rotation.... Since the majority of the weight on a wheel is typical the actual outer ring (not the center or spokes) the farther out from the center of rotation that weight is the more the weight is multipled... Just my .02...

I went from 98# 20's to ~50# 16" and it was a world of difference...
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Old May 20, 2008 | 10:25 AM
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Originally Posted by BlackGMC
I have read that too. The killer with large diameter wheels is that they may weigh the exact same as a 16" wheel, but the majority of the weight is farther out from the center of rotation.... Since the majority of the weight on a wheel is typical the actual outer ring (not the center or spokes) the farther out from the center of rotation that weight is the more the weight is multipled... Just my .02...

I went from 98# 20's to ~50# 16" and it was a world of difference...
i'm looking for tires now and 275/55/17 weigh like 35lbs-38lbs if the rim weighs 22lbs i'm still looking at a 60lb rim/tire which is about ~12lbs lighter then my 20's
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Old May 20, 2008 | 10:27 AM
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Originally Posted by dlt76028
i'm looking for tires now and 275/55/17 weigh like 35lbs-38lbs if the rim weighs 22lbs i'm still looking at a 60lb rim/tire which is about ~12lbs lighter then my 20's
You could always throw mine on your truck and take it for a spin to see if it makes any difference.... Just no major burnouts cause the tires are new...
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Old May 20, 2008 | 12:01 PM
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They'll make a difference. My stock 17x7.5 aluminum wheels with 235/55 17 weigh 51 lbs and my centerline 20x8.5 with 255/35 20 nittos weigh 68 lbs. There's about .3-.4 sec difference in the quarter mile times.
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Old May 22, 2008 | 07:41 PM
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anyone know how much these rims weigh?
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Old May 22, 2008 | 07:59 PM
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Those are the wheels i have on my 06' currently......havent weighed them but id say about 50lbs.......i had 20's on my truck recently and then swapped back with my bro cause they felt so damn heavy lol......i picked a 1 mpg going back to my stockers and my truck felt a hell of lot more peppier!
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