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What backspace should I get. LMM

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2.1K views 4 replies 4 participants last post by  theunderlord  
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#1 ·
lmm aftermarket wheels BS?

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I am going to level my GMC LMM with cognito uca and keys with 1.5 rear block and I want to run 305/65r17 on KMC xd addict 17x9 but, I am unshure on the backspace they offer 2 diffrent backspace

5.71 bs = +18 os
or
4.5 bs = -12 os

Which will be the best or what are yall running?

I know I will have to trim some and I am not afraid to do so just need some info so that I can make a decision.

Thanks,

Please help
 
#3 ·
5.71 will mean less to trim. It is what i am running. Just depends if you like the sticking out look. I have had both. I like them in for the cleaner look and keeps the truck a little cleaner. Either way new wheels always look better.
 
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#5 ·
4.5" is the maximum BS you can run with the cognito UCA's.

call up Norcaltruck.com and ask.
 
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