Can Run-Flat Tires Be Repaired?

We do not repair run-flat tires. They are built to be driven on briefly after losing air, which means the sidewall may already have been stressed by the time it reaches us, and there is no way to tell from the outside how far it was driven flat.

Run-flats are uncommon around here, and that is worth knowing before you buy a vehicle that comes with them.

What is a run-flat tire?

A tire with reinforced sidewalls strong enough to hold the vehicle up for a limited distance after the air is gone. Instead of stopping on the shoulder, you drive to a shop at reduced speed.

The reinforcement is the whole design and it is also the source of every trade-off. A stiffer sidewall means a firmer ride, more weight, and a tire that is harder to work with.

Do you repair run-flats?

No. The reason is that the tire's own design makes the damage impossible to assess from outside.

We only see a few run-flats. Not a lot of people use them here. We have never repaired one. They are hard to mount, so we price them as low profile, because they are harder to get on and off and they are rougher to work with. They are safer, but they are a bit rougher on the drive, and they are generally harder to balance because they are heavier.

Why not repair them

• The tire may have been driven without air, which is what it is built to do
• Running flat stresses the sidewall, and sidewall damage is never repairable on any tire
• You cannot tell from outside how far it was driven that way
• A repair into a compromised sidewall is a repair we would not stand behind

We would rather tell you a tire is finished than put a patch into something we are not confident about. That applies to every tire, and it applies double to one that is designed to be driven on empty.

Why do run-flats cost more to fit?

Because they take longer and demand more care on the machine. We price them at our low profile rate, which is the tier we use for any tire that needs the extra handling.

Pre-tax. Includes mount, dismount, machine balance, tire shine, inflation to spec, torque to spec, and packaging for the set coming off.

What makes them harder

1. Stiff sidewalls resist being levered over the rim edge
2. The extra weight makes them harder to balance cleanly
3. Careless mounting can damage the bead or the rim, so the job gets done slower on purpose

We do not scratch rims. That standard does not get traded away because a tire is difficult.

What are the trade-offs of running them?

You gain the ability to keep driving after a puncture. You give up ride comfort, some cost, and the repair option entirely.

On New Brunswick roads the firmer ride is a real consideration, since a stiff sidewall passes more of every pothole straight through to you and to the rim.

Can you replace run-flats with regular tires?

Often you can, but check two things first. Many vehicles that ship with run-flats do not carry a spare at all, so switching to standard tires means you need a plan for a flat. And your vehicle's tire pressure monitoring becomes more important, not less, because you lose the ability to keep driving on a tire that has gone down.

If you are weighing it up, call us with your vehicle and size and we will tell you what fits. Phone (506) 248-6006, or drop by 300 Wilsey Road #1, open seven days.

Key takeaways

• We do not repair run-flat tires, because the sidewall may already be compromised.
• There is no way to tell from outside how far a run-flat was driven without air.
• Stiff sidewalls make them harder to mount and harder to balance.
• We price them at our low profile rate: $90 for a full set on small vehicles and $115 on medium.
• The trade is safety in the moment against ride comfort, weight, and cost.
• Many vehicles with run-flats carry no spare, so factor that in before switching to standard tires.

Frequently asked questions

Do you repair run-flat tires? No. A run-flat is designed to be driven on after it loses pressure, and there is no reliable way to know from the outside how far it was driven that way. We would rather tell you a tire needs replacing than put a repair into a sidewall that may already be compromised.

Why are run-flat tires harder to mount? The sidewalls are much stiffer, because the sidewall is what carries the vehicle when the air is gone. That stiffness makes the tire harder to get on and off a rim and harder to balance, since run-flats are also heavier than a comparable standard tire.

Do run-flat tires cost more to install? We price them at our low profile rate, because they take the same extra care and time on the machine. The low profile off-rim full set is $90 pre-tax on small vehicles and $115 on medium.

Are run-flat tires worth it? They are safer in the moment a tire loses pressure, since you can keep moving rather than stopping on a shoulder. The trade-offs are a firmer ride, more weight, higher replacement cost, and no repair option. Whether that is worth it depends on how much you value not being stranded.