OEM 18" wheels and Cognito UCA's - with 275/70's?

[Mike Ryan]

Hi All,

 

I have been reading through the forum for about a while to get ideas for leveling my truck.  I have a 2018 sierra 1500 all terrain crew, 6.5' bed.  Based on all the great info here, I have settled on fox 2.5 coilovers to level the truck along with Cognito UCA's.  I was leaning towards LT275/70R18 Duratracs or Ridge Grapplers.  Cognito says the UCA's will fit with the OEM wheels and stock tires, but may rub with larger tires.  Anyone have them with stock wheels and 275/70R18 tires and do/did they rub?  If I have to upgrade the wheels, I'd likely get Fuel Coupler 18x9 with a +12 or +1 mm offset and these tires are not good on a 9 inch wheel.  I'd like to be sure before I purchase the tires.  I imagine a 1/2 inch wheel spacer would work with the stock wheels, but I am really not a fan of spacers...  Any thoughts would be welcome.

 

Thanks,

 

Mike.

[fairway605]

I have icon coilovers and Cognito UCA's with 285/70/18 on stock wheels with no issues.

[flyingfool]

from what i've seen I would prefer to go with a 17"x10  rim on a 35x12 tire. softens up the ride too.  i havent' any opinion about the UCA's   

[TSP4]

I have a 2018 Silverado 1500 Z71 LTZ with a 2" front level w/ 33x12.50r18 tires on the stock 18x8.5 off road wheels. I only rub at full lock. Looking to add king 2.5 coilovers paired with UCA's. Has anyone ran an aftermarket UCA with 18" stock wheels and 33"x12.5 tires?