22" on my car on my 01deville dhs on 2001 Cadillac DeVille

I put rims on my car and now the breaks are seeming to fail I tried to have the dealer fix it cause I have a warranty in my car they told me my rims messed up my breakdown this true???

Asked by for the 2001 Cadillac DeVille
your wheels are much bigger and heavier you need to upgrade your brakes and calipers to match the wheels need to stop