Mounting a tire is two jobs, not one: seating the bead on the rim without damaging it, then balancing the wheel on a road-force machine so it doesn't shake the steering wheel at speed. San Diego Tire Shop does both at 6215 University Ave B, including tires shipped in from an online retailer, and relearns the TPMS sensors afterward.
Seating a bead sounds simple until the tire fights back. The machine breaks the old tire off the rim, the tech checks the bead area of the wheel for corrosion or a ding that would keep the new tire from sealing, then lubricates the bead and forces it over the rim edge with the tire still cold and stiff. Rush that step on an aluminum wheel with a scarred bead seat and the tire never fully seats — it'll leak slowly from day one and nobody will find a nail to blame.
Balancing is the second half, and it's not optional even on a brand-new tire straight out of the box. A road-force balancer spins the wheel under load and catches problems a static balancer misses entirely — a tire that's slightly out of round, or a wheel with a bent lip. Skip that step and the first symptom shows up as a shimmy in the steering wheel around highway speed, not at idle, which is exactly why it gets blamed on the tire itself when it's usually the balance.
Can you mount tires I bought online and shipped here?
Yes — the shop treats a tire that arrived in a cardboard box the same as one pulled from its own inventory: inspect the wheel, mount, balance, relearn the TPMS sensor. What's worth checking before you order is whether that tire's road-hazard coverage travels with it to a shop that didn't sell it — some warranties only pay out through the original seller's network.
What does a TPMS relearn actually involve, and why does it matter?
Most vehicles built since 2008 carry a tire-pressure sensor inside each wheel, and swapping tires without reprogramming the system leaves the dashboard reading pressures from wheels that aren't there anymore. The relearn procedure varies by make — some do it by driving at a set speed, others need a tool plugged into the OBD port — and skipping it is why some cars come back a week later with a pressure warning light that has nothing to do with actual air loss.
Do new tires need to be balanced even if they're the exact same size as the old ones?
Yes. Balance is specific to the individual tire and wheel combination, not the size stamped on the sidewall, so a same-size swap still gets a full balance rather than skipping straight to torquing the lug nuts.
What's a road-force balancer, and is it actually different from a regular one?
A standard balancer spins the wheel free and checks weight distribution; a road-force balancer presses a roller against the tire to simulate the car's weight pushing down on the road. It catches a tire that's out-of-round or a bent wheel that a static balance would pass and send back out shaking anyway.
Will you check my wheels for damage before mounting new tires?
Yes, the bead seat gets inspected for corrosion or dings before a new tire goes on — mounting a good tire onto a damaged bead seat is the fastest way to get a slow leak back within a month.