RoadStoneWheels & Tires

Questions we get

Short answers, grouped by topic. Each group links to the page with the full explanation. If yours is not here, call or text us.

A Coats tire changer in front of the tire racks, with the wheel wall behind it

The basics

Do you sell used tires?

Yes, for cars, SUVs and light trucks. Come by and look them over before you buy.

Do I need an appointment?

No. Walk in any day. We are open seven days a week.

Do you do alignments?

Yes, we do wheel alignments. We also do rotation, brakes, oil changes and air and cabin filters.

What sizes do you carry?

Car, SUV and light truck sizes, new and used. Text us your size and we check what we have.

Do you speak Spanish?

Yes. Se habla español. Call, text or walk in and talk to us in English or Spanish.

Visiting the shop

What are your hours?

Monday to Friday 9 AM to 6 PM, Saturday 9 AM to 5 PM and Sunday 9 AM to 3 PM.

What payments do you take?

Visa, Mastercard, American Express, Discover, debit, tap to pay and checks.

Is there somewhere to wait?

Yes. There is on-site parking, a restroom and free Wi-Fi while you wait.

Can I get a price before I come in?

Text us your tire size and we text back with what we have. For repairs, we look at the car first and quote before any work starts.

Tires and wheels

Used tires

Can you check whether you have my size before I drive over?

Yes. Text us the size and how many tires you need, or use the size tool on this page. We text back with what we have.

Is mounting and balancing included?

The price we give you for used tires mounted covers mounting, a computer balance, a new valve stem and a check of the tire pressure sensor. You hear the total before we start.

Can I buy just one used tire?

Yes. Bring the car or text us the size, and we look for one that matches the tire on the other side of the same axle in size, type and load rating.

Can I mix a used tire with the tires I already have?

Yes, as long as it matches the others in size and type, and the two tires on the same axle are close in tread depth. If your car is all-wheel drive, check the owner's manual first.

Do you sell new tires too?

Yes, the major brands by quote. If you change your mind once you are here, we can price new and used side by side.

New tires

What brands do you carry?

The major brands, by quote. Text us your size and what you drive, and we quote what fits.

What is included in the installed price?

Mounting, a computer balance, a new valve stem or tire pressure sensor service, and setting the pressure. You hear the total before we start.

Can you order a size you do not have?

Yes. We can order the major brands in most car, SUV and light truck sizes. Ask us when it will arrive for your size.

Do I need to replace all four tires, or can I replace two?

Two is fine on many cars, as long as both tires on the axle match. Some all-wheel-drive vehicles need all four close in tread depth, so check the owner's manual.

What tire type makes sense for Houston weather?

For most drivers, an all-season tire. Winter tires are not needed here. If you drive a lot in heavy rain, put wet grip near the top of your list.

Wheels

Do you sell wheels, or only mount tires on wheels I bring?

Both. We sell wheels of all styles and sizes and mount them, and we mount tires on wheels you bring in.

How do I know what wheels fit my car?

Tell us the year, make, model and trim, and the tire size. We check the bolt pattern, center bore, offset and size before you buy.

What are bolt pattern, offset and center bore?

Bolt pattern is the lug count and the circle they sit on. Offset is how far in or out the wheel sits. Center bore is the hole that centers the wheel on the hub. All three have to suit your car.

Do I need new tires if I change wheel size?

Usually, yes. A different diameter or width needs a tire made for it, sized to keep the overall height close to the original.

Do I need new TPMS sensors with new wheels?

Sometimes. Your current sensors can often move to the new wheels with fresh seals. If they cannot, new sensors go in. Either way we tell you before we start.

Service questions

Flat repair

Can my flat tire be fixed, or do I need a new one?

If the hole is in the tread, no bigger than 1/4 inch, and the tire was not driven flat, it can usually be repaired. We take it off the wheel, look inside and tell you which it is before any work starts.

Is a plug good enough?

Not on its own. The industry standard is a plug-patch put in from the inside of the tire, which fills the hole and seals the liner. A plug pushed in from the outside is a way to get to a shop, not a permanent repair.

Can you fix a tire I drove on flat?

Sometimes. Driving flat can damage the inside of the tire where you cannot see it, so we look inside before we decide. Please do not pump it back up before we see it.

Is a repaired tire safe at highway speed?

A plug-patch repair done to the industry standard is the accepted permanent fix. A plug alone, or any repair in the shoulder or sidewall, is not.

Does the tire need balancing after a repair?

Yes. We balance it again after the repair, before it goes back on the car.

Mount and balance

Do I wait while you mount and balance?

Yes. Mounting and balancing is done while you wait. How long depends on the car and on how busy the shop is.

What is the difference between balancing and alignment?

Balancing evens out the weight of the tire and wheel so they spin smoothly. Alignment sets the angles of the wheels so the car tracks straight. A shake at speed is usually balance. A pull to one side is usually alignment.

Do new tires need to be balanced?

Yes. Tires are balanced when they are mounted, new or used.

Is a new valve stem included?

Yes. Every tire we mount gets a new valve stem, or a TPMS sensor service if the wheel has a sensor.

Why does my steering wheel still shake after balancing?

A bent wheel, a tire that is out of round, worn suspension parts or the brakes can all cause a shake that balancing does not fix. Bring it back and tell us when it happens.

Wheel alignment

How do I know I need an alignment?

A pull to one side, a crooked steering wheel, or a tire wearing on one edge are the usual signs. A hard hit on a curb or pothole is a good reason to check even if you feel nothing.

Does an alignment fix a shaking steering wheel?

Usually not. Shaking at speed is more often a balance problem. A pull to one side is more often alignment. We can check both.

How long does an alignment take?

Industry sources put a typical alignment at 30 to 60 minutes, longer when parts are worn. Ask us when you come in how busy the shop is.

Should I get an alignment with new tires?

It is a good idea. If the angles are off, new tires start wearing unevenly right away.

How often should I get an alignment?

Your owner's manual is the first place to look. Tire sellers commonly suggest a check about once a year, and any time after a hard hit, new tires, or steering and suspension work.

Tire rotation

How often should I rotate my tires?

Follow the schedule in your owner's manual. Tire makers commonly suggest every 5,000 to 8,000 miles, but it differs from car to car.

Do I need to rotate tires on an all-wheel-drive car?

Yes, and on time. Some all-wheel-drive systems do not like tires worn to different depths, and rotation keeps the four close.

Can directional tires be rotated?

Yes, front to back on the same side. They should not cross to the other side of the car.

My car has different sizes front and back. Can you still rotate?

Those tires can only swap side to side on the same axle, and only if they are not directional. Tell us the car and we check.

Will rotation fix uneven tire wear?

No. It spreads normal wear. Uneven wear usually points to alignment, balance or worn parts, and those need fixing first.

Brakes

Can you check my brakes?

Yes. Walk in and ask for a brake inspection. We look at the pads, rotors, calipers, hardware, fluid and hoses, and tell you what we see.

Why are my brakes squealing? Is it safe to drive?

Often it is the wear tab telling you the pads are getting thin. It is usually safe to drive to the shop, but get it checked soon, before it turns into a grind.

What does grinding mean?

Usually the pad is worn through and metal is touching the rotor. Stop driving on it if you can and call us. It damages the rotors quickly.

Do I need new rotors with new pads?

Not always. If the rotors are smooth and thick enough, they can stay or be resurfaced. We measure them and show you before you decide.

Why does my steering wheel shake when I brake?

Usually rotors worn uneven. A shake that also happens without braking may be balance or a wheel problem instead.

Oil change

How often should I change my oil?

Go by your owner's manual or the car's oil-life reminder. It depends on the car, the oil it uses and how it is driven.

Do I really need to change oil every 3,000 miles?

Not for most cars built in recent years. The manual and the oil-life reminder set the real interval. Changing early does no harm, it just costs more.

What is the difference between conventional, blend and full synthetic?

Conventional is refined from crude oil. Full synthetic is made from engineered base oils and holds up better in heat and cold. A blend mixes the two. Use what your manual specifies.

Can I switch to synthetic after years of conventional?

Yes. Switching does not hurt the engine. Just do not assume it lets you go longer than the manual says.

Which oil does my car need?

The owner's manual lists the type and amount, and the oil cap often shows the viscosity. Tell us the year, make and model when you come in.

Air and cabin filters

What is the difference between an air filter and a cabin filter?

The engine air filter protects the engine. The cabin filter cleans the air that comes into the car through the vents.

How often should I replace my cabin air filter?

Your owner's manual has the schedule. Filter sellers commonly quote about once a year or 12,000 to 15,000 miles, sooner with dust, pollen and heavy traffic.

Why does my A/C smell musty?

A dirty cabin filter is a common cause. We can pull it and show you.

Can a dirty air filter hurt my gas mileage?

A badly clogged engine air filter can make the car sluggish and cost you mileage. A look at the filter tells you if that is the problem.

Do all cars have a cabin air filter?

Most newer cars do, and some older ones do not. Your owner's manual says whether yours has one and where it sits.

Tire care

How to read a tire size

What do the numbers on a tire mean?

In P225/65R17 98H: a passenger tire, 225 mm wide, with a sidewall 65 percent as tall as the width, radial construction, a 17 inch wheel, a load index of 98 and an H speed rating.

What does R mean in a tire size?

Radial construction. Nearly every car and light truck tire made today is radial.

Can I use a slightly different size than the original?

Sometimes, but not by guessing. The overall height should stay close to the original and the load index should not drop. Ask us and we will check it against your car.

Is the maximum pressure on the tire the pressure I should use?

No. That is the most the tire can hold. Use the pressure on the driver's door placard or in the owner's manual, checked when the tires are cold.

Do all four tires need to be the same size?

Tires on the same axle should match. Most cars use one size on all four; some come with a different size on the rear. The door placard shows which yours is.

When to replace your tires

How do I know when I need new tires?

Tread at 2/32 or less, wear bars flush with the tread, a bulge, a cut showing cords, or a puncture in the sidewall. For wet roads, consider replacing near 4/32.

How do I do the penny test?

Put a penny into a main groove with Lincoln's head down and facing you. If you can see the top of his head, the tread is at or below 2/32 and the tire is due.

Do I need to replace all four tires?

Not always. A matching pair on one axle works on many cars. All-wheel drive cars often need all four close in tread depth, so follow your owner's manual.

Can uneven wear be fixed?

The worn tire cannot be fixed, but the cause can: alignment, pressure, balance or suspension. Fix the cause before the new tires go on.

Are cracks in the sidewall dangerous?

They mean the rubber is breaking down. Light surface lines and deep cracks are different problems, so have the tire looked at before a long trip rather than guessing.

Tire pressure in Houston heat

Should I let air out of my tires when it is hot?

No. Set the pressure cold, to the placard number. A tire reads higher when it is hot; letting air out then leaves it low once it cools.

What PSI should my tires be in summer?

The same number as any other time: the one on your driver's door placard, checked cold. The car's maker sets it for the car, not for the season.

Do tires blow out more in hot weather?

Heat adds stress, and an underinflated tire runs hotter. Keeping the pressure at the placard number is the main thing you can do about it.

Why does my tire pressure light come on in the morning?

Pressure drops as the air cools overnight. A tire that was already a little low can fall under the warning point at dawn, then warm up and turn the light off by afternoon. Check all four cold and fill to the placard.

Can I tell if a tire is low by looking at it?

Not reliably. A tire can be well under its number and still look normal. Use a gauge.

Hydroplaning and flooded roads

At what speed do tires hydroplane?

Tire makers say it can start as low as about 35 mph with enough standing water. Worn tread and low pressure make it more likely, so no speed is safe in every case.

How much tread do I need for rain?

At 2/32 a tire is worn out. Tire retailers point to about 4/32 as the point to replace for wet roads, since grip in water falls off as the grooves get shallow.

Can driving through flood water damage tires?

What the water hides is the bigger problem. Potholes, curbs and debris under the surface can cut a tire, bend a wheel or knock the alignment out.

What should I check after driving through water?

Tires for cuts and bulges, wheels for bends, how the car tracks, and how the brakes feel. If anything is off, bring it in before a highway drive.

Are bald tires dangerous in the rain?

Yes. With little or no tread, there is nowhere for the water to go, and the tire rides on it at lower speeds. At 2/32 or less a tire is worn out and should be replaced.

Hit a pothole? What to check

Can a pothole damage my tire?

Yes. A hard hit can cut the sidewall or break the cords inside, which shows as a bulge. A bulged tire cannot be repaired and should be replaced.

How do I report a pothole in Houston?

Call 311 or use the City of Houston's online 311 service. Give the street, the nearest cross street or address, and the lane.

Will the city pay for pothole damage?

We cannot answer that and do not give legal advice. Ask the City of Houston through 311 about its claims process.

How do I know if a pothole bent my rim?

Look for a visible bend or crack at the lip, a tire that keeps losing air, or a vibration that started after the hit. We can check the wheel on the balancer.

Can hitting a pothole knock my car out of alignment?

Yes. A hard hit can move the suspension angles or bend a part. If the car drifts or the steering wheel sits crooked afterward, have the alignment checked.

Tire rotation, balance and vibration

Why does my car shake at 60 mph?

Most often a wheel out of balance. If balancing does not fix it, the next suspects are a bent wheel, a damaged tire or worn suspension parts.

Will rotation fix uneven wear?

No. Rotation spreads wear around but does not fix the cause. Uneven wear from alignment, pressure or suspension needs that problem fixed.

Walk in any day, or text us first.

6302 Westheimer Rd at Winrock. No appointment. You get the price before we start.