A humming or roaring noise that rises with speed usually comes from one of two things: uneven tyre wear or a worn wheel bearing. The good news is they're easy to tell apart with a couple of simple tests, and if it's the tyre, fixing the underlying cause solves both the noise and the wear. Either way, it's worth checking rather than living with.
Tyre wear vs wheel bearing
The simplest test is to gently steer left and right at a steady speed on a quiet road. If the noise changes noticeably as you load one side or the other, it's more likely a tyre or bearing on that side. A bearing noise tends to be a constant drone that doesn't change much with steering, while tyre noise often does. If in doubt, have both checked.
What uneven wear sounds like
Tyres worn in a "cupped" (scalloped) or "feathered" pattern make a droning, roaring hum that grows with speed. You can often feel feathering by running a hand across the tread, see why tyres wear unevenly. This kind of wear is a clear sign something needs attention, because the tyre is being worn in a way that also affects grip.
Why the tyre is wearing that way
Cupped or feathered wear usually points back to alignment, balancing or worn suspension. That's why replacing the noisy tyre alone isn't enough; the new one will wear, and hum, the same way unless the cause is fixed. Sorting the alignment or balance and then fitting a fresh tyre is what cures it for good.
Could it just be the tyre type?
Sometimes the noise is simply the tyre's design. Chunky all-terrain tyres and some performance tyres are naturally louder than quiet touring tyres. If the noise was there from new and the tread is even, it may just be the tyre, in which case a quieter touring tyre next time will help, see quietest tyres.
We can diagnose it
We can inspect your tyres for uneven wear, check balance and advise whether the noise is the tyre or something else, then replace tyres at your home or work across the UK. Book a check.
