Tire Shaving in Redwood City: The Fix Balancing Can't Make
Tire shaving, also called truing, removes a small amount of rubber to make a tire as close to perfectly round as possible, which cures vibration that balancing alone will not fix and improves grip and handling. Five Points Tire is one of the few shops in the area still doing it, on the vehicle or off it on a specialized balancing machine.
Tire shaving at Five Points Tire, in short
Five Points Tire in Redwood City is one of very few shops in the Bay Area still offering tire shaving, also called truing. We shave on the vehicle or off it using a specialized balancing machine, and we work on tires for newer vehicles as well as hot rods, muscle cars and antiques. If a vibration survived a proper balance, the tire is likely out of round and this is the fix.
If you've had your wheels balanced properly and the car still vibrates, you've hit the limit of what balancing can do.
Most shops will rebalance it, then rebalance it again, then start suggesting you replace things.
There's another explanation, and it's one very few places in the Bay Area can still fix.
The tire might not be round.
Balancing and truing are not the same job
Balancing corrects weight and truing corrects shape, and a vibration can come from either one.
A wheel and tire assembly is never perfectly even in weight all the way around, so balancing adds small counterweights to even it out.
Truing makes a tire that isn't quite round into one that is.
A tire can be perfectly balanced and still out of round. When that's the case, no amount of rebalancing will settle it, because balancing was never the problem.
| Service | Corrects | Fixes |
|---|---|---|
| Balancing | Weight distribution | Vibration that arrives around 50 to 70 mph |
| Alignment | Wheel angles | Pulling and uneven tread wear |
| Tire shaving | The shape of the tire | Vibration that survived a proper balance |
Three different problems. Rebalancing a round-ness problem gets you nowhere.
Very few shops still have the equipment. Tire shaving was once a normal part of fitting tires, then radials improved roundness and the practice faded. Most of the machines and the people who knew how to use them went with it. We still shave on the vehicle or off it on a specialized balancing machine.
Signs you need tire shaving
- A vibration you can still feel after the wheels have been balanced properly
- A hum or wobble that changes with speed and will not go away
- A new tire that has never felt right from the day it was fitted
- You race or track the car and want maximum grip from a shallower tread
- You run a hot rod, muscle car or antique and want the ride sorted properly
- A tire that is out of round rather than out of balance
Balancing, alignment and truing
| Service | What it corrects | Symptom it fixes |
|---|---|---|
| Balancing | Weight distribution around the wheel | Vibration that arrives around 50 to 70 mph |
| Alignment | The angles the wheels sit at | Pulling to one side, uneven tread wear |
| Tire shaving or truing | The shape of the tire itself | Vibration that balancing did not cure |
Three different jobs. Vibration that survives a proper balance is usually shape.
What our team does for tire shaving
- 01Shave the tire on the vehicle, or off the vehicle using a specialized balancing machine
- 02Work on tires for newer vehicles as well as hot rods, muscle cars and antique vehicles
What tire shaving actually involves
A thin, even layer of rubber is machined off the tread until the tire runs true.
The high spots come down to match the rest, and what you're left with is a tire that rolls without thumping once per revolution.
We can do it on the vehicle or off it, using a specialized balancing machine.
Why almost nobody offers tire shaving any more
Tire shaving used to be routine. Early tires came out of the mold with extra tread and were often noticeably out of round, so shaving was just part of fitting them.
Radial construction improved roundness a great deal and the practice faded. The machines went, and so did the people who knew how to use them.
The thing is, plenty of modern tires are still more oval than round. The need never actually went away, just the capability.
Want it checked? Describe what the car is doing and Five Points Tire will tell you whether it needs tire shaving or something else. Call 650-365-0280, or send the form and someone calls you back. Request an appointment
The three reasons people ask for tire shaving
Roundness, grip and shape. A vibration that survived balancing, a more stable contact patch under load, or a new set that never felt right.
- Roundness: The most common. A vibration that survived balancing, and the owner is out of ideas.
- Grip: A shallower, more uniform tread block flexes less under load, so the contact patch stays more stable. This is why racers do it.
- Shape: Simply making a tire that isn't quite right into one that is, usually on a new set that never felt correct.
Useful on cars that are hard to serve any other way. Hot rods, muscle cars and antiques often run tires that are hard to source. Making the ones you have run true is a great deal more practical than hunting for a better set.
Hot rods, muscle cars and antiques
Hot rods, muscle cars and antiques are where truing earns its keep most obviously, because their tires are hard to source and expensive to replace.
Hunting for a better set isn't always an option, and sometimes there isn't a better set to find. Making the tires you already have run true is far more practical, and it's work we do regularly.
We handle newer vehicles the same way. The technique doesn't care how old the car is.
Common vibration mistakes to avoid
- Rebalancing the same wheel three times. If a careful balance didn't fix it, the problem isn't balance.
- Replacing suspension parts to chase a vibration. Suspension wear causes clunks and vague steering, not a speed-specific shake.
- Assuming a new tire must be round. Plenty leave the factory more oval than round. It's within tolerance, and you can still feel it.
- Buying a whole new set to fix one bad tire. Worth finding out which corner it is first.
- Ignoring it because it's only at one speed. An out-of-round tire wears itself unevenly, and that makes the vibration worse over time.
The bottom line
If a proper balance didn't fix your vibration, stop rebalancing it.
The tire is probably out of round, and truing is the fix. It's a specific service with specific equipment, and there aren't many places left running it.
We are one of them, on the vehicle or off it, on anything from a daily driver to a hot rod.
Shaving fixes roundness, not everything else. If the vibration is weight rather than shape it is wheel balancing, if the car also pulls it needs a wheel alignment, and if the tires are near the end anyway tire installation is the cheaper answer. A vibration that changes with the road surface is usually the suspension.
Call Five Points Tire on 650-365-0280 and tell us what speed it happens at. We're one of the few shops in the area still shaving tires, so we can tell you whether yours is a candidate.
Need new tires? Tell us your vehicle or tire size and we'll come back with options and pricing. Find tires for my vehicle
What is tire shaving?
- It is machining a thin, even layer of rubber off the tread so the tire runs as close to perfectly round as possible. It is also called tire truing. It cures out-of-round problems that balancing cannot touch.
What is the difference between balancing and tire shaving?
- Balancing fixes weight distribution by adding counterweights. Shaving fixes shape by removing rubber. A tire can be correctly balanced and still be out of round, and that is the case where shaving is the answer and rebalancing is not.
Why does my car still vibrate after balancing?
- Because balancing corrects weight, not shape. If the tire itself is not truly round, it will still thump once per revolution no matter how well balanced it is. That is the classic case for truing.
Does tire shaving reduce the life of the tire?
- It removes tread, so yes, it starts the tire with less depth than it had. What you get in exchange is a tire that runs true and wears evenly, which is often the better trade on a tire that was never going to be comfortable as it was.
Why do racers shave their tires?
- A shallower tread block flexes less under load, which makes the contact patch more stable and improves grip and turn-in. It is a long-standing practice in racing for exactly that reason.
Can you shave tires on classic or antique cars?
- Yes. We work on tires for newer vehicles as well as hot rods, muscle cars and antiques, and older vehicles are one of the places truing is most useful, because sourcing a replacement set is often the harder route. Five Points Tire is one of the few shops in the area still doing this work, on the vehicle or off it.
Related services
Wheel Balancing
If you feel a vibration through the steering wheel, the seat or the floor that appears at a particular speed and fades again, the wheels are almost certainly out of balance.
Wheel Alignment
If your car pulls to one side, the steering wheel sits off center when you are going straight, or your tires are wearing on one edge, the alignment is out.
Tire Installation
New tires need to be mounted to the wheel, balanced, and fitted with the pressures and TPMS reset set correctly, or they will wear unevenly from the first mile.
Suspension Services
Your suspension keeps the tires in contact with the road and absorbs what the road throws at the car, so when parts of it wear you lose ride quality, steering precision and grip together.
Tire Rotation
Tires wear at different rates depending on which corner they sit at, so moving them around at regular intervals is what makes a set wear evenly and last its full life.
Custom Wheels
New wheels have to match your vehicle on bolt pattern, offset, load rating and brake clearance before the look matters at all.