A Clunk Over Rough Pavement Is a Suspension Problem

Lakeland pavement is hard on a front end

Polk County moves heavy freight. The phosphate country south of town puts loaded rigs on SR 37 and US 98 every day, and lanes that carry that weight get rutted, cut open and patched again.

You feel the patches through the wheel first. Over a few years they are what wears out bushings and ball joints on a car that never leaves the county.

What each noise usually is

• • A clunk over bumps Most often sway bar end links. Cheap parts, and the first thing on the car to start rattling.
• • A knock as you turn in Points at a ball joint or a tie rod end. That one gets looked at before you put many more miles on it.
• • A float or a bounce after a dip Shocks or struts that have quit controlling the spring. The car keeps moving after the road stopped.
• • A pull to one side Could be alignment, could be a brake dragging. Both get ruled out at the car.

The sound and when you hear it narrows this down before anyone touches the car.

Why it turns into a tire bill

A worn part lets the wheel change angle while you drive. The tire scrubs instead of rolling and wears on the inside edge, where you do not see it unless you go looking. Plenty of people find the bad joint right after paying for tires they did not need to buy.

An alignment has the same trouble. Done on worn parts it will not hold, because the geometry moves again the moment weight comes onto it.

How it gets checked in the driveway

The car goes on stands, the wheels come off, and each joint gets levered while somebody watches for play. Most of these faults you can see move. There is no guessing once the wheel is off.

Common parts ride on the van, so an end link or a set of struts is usually the same visit rather than a second appointment.

Frequently Asked Questions