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

20s worth it?

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Old Apr 1, 2020 | 08:32 PM
  #11  
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You match the tire diameter size to the drop, then rim size to tire... equals how cool you wanna look... compared to comfort...insert caveat... pot holes matter.
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Old Apr 1, 2020 | 10:39 PM
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I like a 2/3 or 2/4 drop with 265/50R20s on the 99-06 trucks. Once I get back to my 06 that's my plan... I'll likely have that done in time for my 6 year old to get his learners permit in it.
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Old Apr 2, 2020 | 12:55 AM
  #13  
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2/4 drop is like kissing your sister...

4/6 drop is like kissing the **** next door...

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Old Apr 2, 2020 | 12:10 PM
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Originally Posted by RedXray
2/4 drop is like kissing your sister...

4/6 drop is like kissing the **** next door...
after you kiss your sister you always want the ****.......so skip your sister and go right for the ****.
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Old Apr 2, 2020 | 01:47 PM
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Old Apr 3, 2020 | 12:35 AM
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Originally Posted by madmann26
If you don't care about the extra rotating mass, go for it.
Originally Posted by _zebra
for a truck, i prefer to have the wheels just big enough to clear the brake calipers... but that's just me

taller sidewalls tend to have better ride feel than thin ones, and going from 16 to 20 (keeping the same tire height) will be noticeable, but i doubt it'd be any real detriment other than increasing the average radius of your wheels' rotating masses (which might increase acceleration & braking time/distance a little)
This is where I'm at.


What does your dad drive? If its anything that's a 2007 NNBS or newer, your 16s won't fit over his brake calipers.

Tell us more about your pickup, plans, budget, goals..
What year, engine, and gearing?

If you have an older v6, it will be noticeably slower. Not dog slower, but roughly two extra people slower.
If you have highway gears that's even worse. (if you don't know, you can get it off your RPO codes).


I would go bigger than the 16s just so you can do the NNBS brake upgrade when you are going to do em anyways, (which won't fit under 16s, so I'm guessing you have a 99-07). If he has a 2005-2007 NBS, he may already have the NNBS upgrade. If his pickup is a 2005-2007, you can go out and look at his calipers and you should be able to tell if they are dual piston or single piston. If you can't tell, take and post a picture of em. (99-2004 were all single piston from the factory).

Bigger wheels are usually wider too. The larger contact patch of the tire, will give you better handling, but hurt mpg, its more friction.
Bigger wheels are also a rougher ride, but ONLY because for the same size circumference, the smaller wheel gets a tire with a bigger sidewall. Cruising down the highway you may not notice it, but you will on potholes and rough road. That's something that may factor in, depending on where you and live and drive. I have 265/70/17s, and speed bumps are best at 8mph or 31mph. You're not going to do that with 20's and a short tire, it would jar you.

Last edited by adriver; Apr 3, 2020 at 12:40 AM.
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Old Apr 5, 2020 | 06:19 PM
  #17  
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Lmfao 🤣..... I had stock size 275 55 20s then after I dropped the truck I went with a 275 45 20 tire and I feel the truck has more take off.... didn’t notice any change on ride quality either might be cuz of the shocks I put in...
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