Also in Karachi, which market are you checking. I think you should check Tirepoint which is in Gulshan Metro, Khalid Bin Walid Rd. market, and Zafcom at Gizri. There is a Techno tire at N. Nazimabad as well, so whichever is close to you.
Be sure to check for original imports, and fresh manufacturing dates (2020). Any signs of tampering on tires or packaging, walk away. Better to pay a bit more for fresh and genuine import than problematic tires which may have storage / transit damage history.