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    2021 GMC At4, 285/60/20 coopers

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81mmcat's Achievements


Enthusiast (2/11)



  1. Running cooper at3 285/60/20 on my stock gmc stock wheels 1500 at4 . O rubbing, I think chevy has a bigger wheel well? Also when going through those radar detector signs was showing the same speed as the truck was up to 40mph. Have not checked at higher speeds.
  2. Am looking at these and was wondering what the diff. is between the standard sport steps and the "off road edition sport steps" they look the same?
  3. T What about contacting MVI and see if they can do anything for you?
  4. Has any one installed a Pulsar LT on a 2021 1500 that didn't come with the auto stop start? And how did it turn out?
  5. Any difference in ride quality with the new type rancho shocks compared to the ones that came from the factory?
  6. No expert but that sounds like a good choice. Good luck and enjoy it
  7. Or buy the factory 2" lift and have a competent mechanic install it. Look at the gm kit no control arms included, should speak for itself
  8. the problem is when you go higher than 2". Had 2" on my 2014 60,000 miles still drove like new when I traded it in. I really suggest you go to the silv/gmc mods section and read a crap load of info there. Most guys with trouble are raising their trail boss or AT4 higher without the UCA's
  9. yes all stock if you search some on this sight you will see that all the 19-21's have the same upper control arms you don't need aftermarket ones unless you go more than 2" on factory slt 1500
  10. I have a stock 21 1500 AT4 and put on 285/60/20 cooper at3 xlt, 0 rubbing using factory wheels, no wheel spacer
  11. I was thinking about the same but nice to hear that others had the same opinion thanks
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