2020 GMC Sierra 2500HD tire and wheel sizes, bolt pattern and tire pressure

Check the tables below for every tire size, wheel size, bolt pattern (PCD), rim offset and tire pressure fitted to the 2020 GMC Sierra 2500HD.

2020 GMC Sierra 2500HD tire sizes

Bolt pattern

Other years

Fitment tables

Open a trim for its factory package and every alternative size, front and rear.

2020 – 2023 USA market 2 trims

445 hp · 6.6L V8 245/75 R17 121R 4 fitments

GenerationGMT T1XX 2020–2023

Power445 hp

Engine6.6L V8, Diesel

Center bore124.1 mm

PCD8x180

ThreadM14 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/75 R17 121R	17x7.5 ET44 ~~8x180~~	5.5	Tires Rims
265/70 R17 121Q	17x7.5 ET44 ~~8x180~~	5.5	Tires Rims
275/70 R18 125S	18x8 ET44 ~~8x180~~	5.5	Tires Rims
275/65 R20 126S	20x8.5 ET47 ~~8x180~~	5.5	Tires Rims

401 hp · 6.6L L8T V8 245/75 R17 121R 4 fitments

GenerationGMT T1XX 2020–2023

Power401 hp

Engine6.6L L8T V8, Petrol

Center bore124.1 mm

PCD8x180

ThreadM14 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/75 R17 121R	17x7.5 ET44 ~~8x180~~	5.5	Tires Rims
265/70 R17 121Q	17x7.5 ET44 ~~8x180~~	5.5	Tires Rims
275/70 R18 125S	18x8 ET44 ~~8x180~~	5.5	Tires Rims
275/65 R20 126S	20x8.5 ET47 ~~8x180~~	5.5	Tires Rims

Reading the table

OE fitment: The package fitted at the factory for that trim.
Alternative: A size the car accepts without modification — plus-sizing, winter setups or optional wheels.
Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.