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2020 Onyx Black-on-Jet Black GMC Sierra 2500HD SLE Crew Cab - Cloth Front Bucket Seats - Long Box - 4Wheel Drive - "L8T" Gas Moto Metal 20"x9" wheels with +18mm offset: Model MO993 HYDRA Part# MO99329088218 Chrome eight point star, deep lip design with red inserts BFGoodrich T/A KO2 285/65R20 127S E1 BSW tires N-FAB podium stainless steel side steps: Part# #HPC1980CC-SS Highway Products truck bed rails

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GM-Trucks.com Members: My 2020 GMC 2500HD came from the factory with 17-inch wheels & tires. I replaced them with 20-inch wheels & tires. My WAZE navigation app shows a ~5-mph difference with my speedometer. Can GMC mechanics re-program my speedometer for 20-inch wheels & tires? Also, are my tire pressure sensors calibrated for my factory 17-inch wheels & tires? Do my tire pressure sensors also need to be re-calibrated for my 20-inch wheels & tires? Thank you in advance for any guidance you can offer. Much obliged.

I have 285/65R20 BFG KO2 tires with Moto Metal 20x9 +18 wheels on my stock 2020 GMC Sierra HD with no problems.

I’m happy to report that my 2020 Black-on-Black GMC Sierra 2500HD SLE CC LB 4WD "L8T” Gas truck was delivery on 02/14/2020 with Upfitter Switches Factory installed.

BMW only makes ONE thing: “The Ultimate Driving Machine”! GMC only makes ONE thing: “Denali Diesels”! Lowly SLE-Trim Level, Long Box, L8T Gas Engine Trucks are definitely at the BOTTOM of GMC’s Priority List!

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