If your tyres are an unrecognized and cheap brand then you can be sure the manufacturer has less material in the tyre build. Easy to check for yourself, entry level tyres have less tread depth and low quality rubber blend simply because the tyre construction isn't good enough to support decent tread elements.
The tread area will "crown" and the tyre will wear unevenly because the weak belting within the tyre carcass. Cornering, braking, tread life and safety will be compromised leading to failure and disappointment.
Quality radial light truck tyres have higher grade materials used in their consrtuction. Premium steel belts are placed across the casing creating a uniform base for deeper tread elements. The belts help support the tread and the sidewall remains more compliant increasing ride quality. The handling is much improved in cornering and braking due to better materials and manufacturing standards.
Fuel economy is enhanced with less rolling resistance in synthetic, coupled silica, compounds. Efficiant transfer of power through superior, high denier, cord in the sidewall compliments the tyre package. Keep your family safe and avoid low quality tyres.