For tires you could order on-line for delivery to your mechanic.
https://www.tirerack.com/

Costco also carries quality tires--I usually buy their Michelin for a number of reasons--but I have my local mechanic do the tire balancing and rotation after the initial installation. Costco does provide free balancing but that part can be inconsistent. Their warranty coverage is very good. And, if you are not already a Costco member, the gasoline is high quality and the savings for likely pay for your annual membership fee.