Heavier assemblies are less forgiving
A light passenger wheel out of balance by a small amount produces a mild shimmy. The same proportional error on a heavy light-truck or commercial assembly produces considerably more force, because the weight being thrown around is greater.
That is why a pickup running large tires often develops a vibration a sedan would shrug off, and why balancing matters more as the assembly gets heavier rather than less. The vibration goes into the steering, the suspension and the tread continuously.
It is also why a vehicle that was smooth on its original tires can become rough on a larger, heavier set that is otherwise perfectly good. The tires are not at fault; the tolerance has tightened.
What it protects
Tread, which otherwise wears in patches and takes a set off early.
On a commercial tire, the casing as well. Patchy wear can cost a casing its retread life, and the Purcell plant is on this same road, which makes that a direct loss rather than a theoretical one.
Everything from a car to a loader
Boise carries all nine Purcell tire categories and is the only Purcell location in Idaho offering OTR services, so the assemblies that come through here range from a passenger wheel to equipment.
For a mixed operation that is one address for the whole yard.
When to ask for it
The national tire and wheel balancing page lists the occasions. The one to add here is after a change of tire size, since a heavier assembly is less tolerant of the same error and a vehicle that was smooth before may not be afterwards.
A vibration at every speed, or a steering pull, is not balance. That is alignment, or something worn. Both are handled here.
When the rim is the cause
A correctly balanced tire on a wheel that is out of round or corroded at the seat still shakes. Wheel refurbishing is offered at this store, so the rim can be checked in the same visit rather than after a second balance has failed.
About this store
The Boise store is open Monday to Friday, 8:00 AM to 5:00 PM, managed by Tyrel Perkins.
See the national tire and wheel balancing page for all 51 locations.

