2020 Silverado 1500 front brake caliper

Steven S 504 · January 25

I have a 2020 silverado 1500 LT 4wd with 5.3 engine. I am trying to determine what brake caliper size they put on these trucks? I was told I couldn't fit a 18 inch rim if it had the 6 piston calipers but I'm not sure what caliper I have.

64BAwagon · January 25

I believe they are 2 piston calipers, I have never heard of a "6 piston caliper"

You may want to find a more knowledgeable seller to buy your wheels from.

seamus2154 · January 26

The offset is different on the 2019 up trucks because of a larger caliper. Thats why the previous generation truck rims hit on the front. Its not a 6 piston caliper. Need specific 2019 and up rim. There is a BB kits and option from GM .

2016 Sierra Owner · January 26

Only a 2 piston brake caliper on these trucks. GM made the outside of the caliper thicker in this area (red) and added a ridge (orange) that the older wheels will rub on if no spacer is used.

newdude · January 27

On 1/25/2023 at 5:48 AM, Steven S 504 said:

I have a 2020 silverado 1500 LT 4wd with 5.3 engine. I am trying to determine what brake caliper size they put on these trucks? I was told I couldn't fit a 18 inch rim if it had the 6 piston calipers but I'm not sure what caliper I have.

From the factory using factory wheels, the stock 4 piston brakes (see above picture) accept a 17 inch wheel as the smallest.

The GM Big brake kit is a 6 piston kit and 20 inch wheel is the smallest.

Older OEM wheels won't fit without spacers. See the above post from Seamus.

Aftermarket wheels you have to keep an eye out on the offsets.

Edited January 27 by newdude