Porsche advises not to plug or patch tires on Taycan

[Gino]

I plugged my winter tire the very next day after picking up my Taycan from the dealer. Drove it home 3,500 miles with the plug, no issues. Talked to the tire shop when swapping the tires to a different rim set, asked them if I should have the plug removed and tire patched. They said they can do it, but don't really recommend it as the plug apparently should last the life of the tire. On 3rd winter now, tire holding pressure, no problems whatsoever. The puncture was smack in the very middle of the tire tread.

Yes, I have never had a plug fail over 45 years so adding a patch to a plug is just more insurance. I’ve never even had a plug start to leak.
I will likely get a tire on my Taycan patched afterward just to be sure, if I ever have to use a plug to repair a nail or screw hole.
As long as you clean & prep the hole properly a plug repair will be perfectly fine for the life of the tire.

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[Spyerx]

its fair enough that a plug / patch MAY (ie may) weaken a tire. At least here in the US, we aren't driving at 150mph on the autobahn. I had a plug in my original delivered tires for almost a year and it was fine, it was a screw hole in the center of the tread block...

Porsche is just very very conservative on these things.

I carry a plug kit and pliers in all my cars, and it's saved me multiple times.

 

[Watchesandburgers]

I was just at my local dealer this week and had a nail in a tire. Service advisor told me they do not patch or plug tires as a liability issue. Though he then told me sidebar that in 30 years of experience he's never seen a patch or plug catastrophically fail. Either way, the dealer only replaces tires. IMO, it's the dealership's way of not becoming Discount Tire, where they have to support patching/plugging tires and then later replacing them. It's an understandable business decision.

 

[Gino]

its fair enough that a plug / patch MAY (ie may) weaken a tire. At least here in the US, we aren't driving at 150mph on the autobahn. I had a plug in my original delivered tires for almost a year and it was fine, it was a screw hole in the center of the tread block...

Porsche is just very very conservative on these things.

I carry a plug kit and pliers in all my cars, and it's saved me multiple times.

You are exactly right. In the US you can rarely drive 75-80mph legally so I’m not worried about a plug or patch failing.

 

[johnarpy]

These are Porsche policies on ALL Porsches. They explained that the 911s are performance cars and all Porsches are made for the track. Because of that they won't risk a failure at track speeds. When I get a nail of screw I go to Goodyear for repairs. Unfortunately 3 of my Porsches have centerlock wheels so they can only go to the dealer.

 

[Gino]

These are Porsche policies on ALL Porsches. They explained that the 911s are performance cars and all Porsches are made for the track. Because of that they won't risk a failure at track speeds. When I get a nail of screw I go to Goodyear for repairs. Unfortunately 3 of my Porsches have centerlock wheels so they can only go to the dealer.

Makes perfect sense why Porsche maintains this very high standard.

 

[RAHRCR]

A plug or patch, as long it’s not done in a cold weather climate, will be fine almost every time…..and most of the time in cold weather. The spray sealants should be considered temporary and one should plan on replacing the TPMS sensor as part of that process.

If you plan on pushing your tires to the limit via the track or running down to the limits of its tread life, just replace the tire up front.

 

[JackSparrow]

A patch done from the inside of the tire is an acceptable repair as far as safety as long as speed is kept under 85 mph.
A tire plug done from the outside of the tire is an acceptable temporary roadside repair.
If not “close” to the sidewall it will last reasonably well in most cases. There is additional risk of blowout and tread separation which could be catastrophic.
The speed rating in this case is 85mph as well.

Note that it doesn’t mean that at 86 mph you will explode, just that you’re adding unnecessary risk to you and your passengers.

Of course driving at higher speeds adds risk vs driving at 60 mph. Still in the Porsche price range it seems silly to pinch pennies over safety, really 4/32’s, patch, sidewall damage, or other similar issue should mean tire replacement.

 

[kmcdonal]

I recently got a nail in an almost brand new tire in my 2025 Taycan Turbo. I took it to a very capable tire shop, and we jointly made the call to replace the tire even though it was an easy repair. Because the tire was virtually new, I only had to replace one. Our thinking was that this is a very heavy and very powerful car so it places a lot of demand on the tires. No need to take a chance.

I have had a few weird tire issues over the years in the sports cars I have owned. I have come to appreciate that sports cars are tough on their tires.

 

[figure1a]

I suppose the question here really isn't CAN you patch a tire but SHOULD you. Punctures in a tire are rarely a perfect circle but more likely jagged which each branch of the jagged split is potential for further splitting with age (kind of like when you get a star crack in your windshield—today it's just a small nick but in six months it has three six-inch legs spidering out and then in a year one of them goes clear across your windshield. The tire manufacturers all state whether they find a patch acceptable and then what the new speed-rating of the pathed tire will be. Some of the tire manufacturers say no patch at all and you must replace.

The kid plugging your tire at a tire shop surely has no idea what he is really doing and is just following what someone else showed him and that repair gives that hole no structural integrity but rather just keeps the air from escaping from it. Sure, a patch is "stronger" but the tire is still compromised. With either, you can easily go the life of the tire with no issues.

 

[jimshadow]

When I had my Taycan I picked up a sm. bolt in the right rear tire from a carwash. Drove right to my local shop (they know me well) and I had a plug and patch on the inside. I completely wore out that set of tires and never had an issue.

I've plugged several tires in my own garage in never an issue.

FWIW, YMMV

Jim

 

[Gino]

I suppose the question here really isn't CAN you patch a tire but SHOULD you. Punctures in a tire are rarely a perfect circle but more likely jagged which each branch of the jagged split is potential for further splitting with age (kind of like when you get a star crack in your windshield—today it's just a small nick but in six months it has three six-inch legs spidering out and then in a year one of them goes clear across your windshield. The tire manufacturers all state whether they find a patch acceptable and then what the new speed-rating of the pathed tire will be. Some of the tire manufacturers say no patch at all and you must replace.

The kid plugging your tire at a tire shop surely has no idea what he is really doing and is just following what someone else showed him and that repair gives that hole no structural integrity but rather just keeps the air from escaping from it. Sure, a patch is "stronger" but the tire is still compromised. With either, you can easily go the life of the tire with no issues.

Radial tires do not develop spider cracks after the tire is breached by a nail. The steel belts prevent this 100%. The purpose of the patch on the inside along with the plug from the outside with a rubber adhesive/sealant is to keep moisture & air out which will permeate the steel belts beneath the tread and slowly cause degradation within the treads themselves. This eventually can lead to tread separation and a catastrophic failure at high speed which causes the tread to heat up.
This is why the plug alone is not considered a satisfactory repair to any tire. With only a plug repair moisture won’t get in from the inside of the tire except the humidity in the air you use to inflate the tire. The time it takes for this level of moisture to compromise any tire is at least 5 years which is the lifetime of a tire before the rubber begins to breakdown.
High performance tires have very soft rubber compound and don’t last more than 25K miles unless the vehicle is very light which EVs are not.
Because I typically don’t drive any of my vehicles more than 3K to 4K miles per year I never get to the point where the treads have worn out. I have to replace them due to age. Even in the case of my Taycan it looks like I won’t get more than 15K out of my rears (Pirelli 305/21) so they will last me roughly 4 years but my fronts will last 6 or 7 years which means I will likely replace them in 5-6 years max depending if I start seeing cracks on the inside side walls which are never cleaned/conditioned like the outer sidewalls are.
For people that like to take their Porsche’s on the racetrack that is another story all together. They are pushing the tire to it’s design limits where the potential for failure increases dramatically which is why the tire manufacturers decrease the speed rating of a tire which has been patched.
For me, I have no interest in racing my Taycan or any car. I bought my Taycan for its looks, it’s Porsche handling and it’s EV acceleration off the line and passing on the highway. My days as a youth pushing my vehicles to their top end speed are long gone.
I enjoy a high quality engineered ride like Porsche offers. If I wanted to race a car on a track I’d buy a formula one in XXL since a normal formula one car doesn’t come in my width. I can get in but getting me out would require a crane with the car chained to the ground to break my ass free, stuck in the tiny cockpit…
Unfortunately too many steaks, too much wine, bourbon & cigars along with age has made my body incompatible with high performance cars, boats or planes.
That’s ok, as long as Porsche designs enough room for me to get in and get out without assistance from others or a cherry picker in my garage then I’ll continue to buy Porsche after Porsche until I’m dead… Cheers!

 

[Fish Fingers]

Makes perfect sense why Porsche maintains this very high standard.

Do Porsche still say all their cars are designed for the track?

I has a base Macan loaner and it was shockingly bad to drive. If you took it on the track you would likely crash it ........due to falling asleep during the lap.

And my heavyweight RWD Taycan would also have been a very poor track car.

Then there the base Panamera and Cayenne too.

 

[Gino]

There are far better track cars to buy other than Porsche but they have the luxury market customers & wannabe race car drivers sold, lock, stock & barrel.
Porsche gives me plenty to like where I have no interest in Ferrari, Lamborghini, etc.
They have the recipe for what is important to me which is why I keep coming back…

 

[JackSparrow]

Radial tires do not develop spider cracks after the tire is breached by a nail. The steel belts prevent this 100%. The purpose of the patch on the inside along with the plug from the outside with a rubber adhesive/sealant is to keep moisture & air out which will permeate the steel belts beneath the tread and slowly cause degradation within the treads themselves. This eventually can lead to tread separation and a catastrophic failure at high speed which causes the tread to heat up.
This is why the plug alone is not considered a satisfactory repair to any tire. With only a plug repair moisture won’t get in from the inside of the tire except the humidity in the air you use to inflate the tire. The time it takes for this level of moisture to compromise any tire is at least 5 years which is the lifetime of a tire before the rubber begins to breakdown.
High performance tires have very soft rubber compound and don’t last more than 25K miles unless the vehicle is very light which EVs are not.
Because I typically don’t drive any of my vehicles more than 3K to 4K miles per year I never get to the point where the treads have worn out. I have to replace them due to age. Even in the case of my Taycan it looks like I won’t get more than 15K out of my rears (Pirelli 305/21) so they will last me roughly 4 years but my fronts will last 6 or 7 years which means I will likely replace them in 5-6 years max depending if I start seeing cracks on the inside side walls which are never cleaned/conditioned like the outer sidewalls are.
For people that like to take their Porsche’s on the racetrack that is another story all together. They are pushing the tire to it’s design limits where the potential for failure increases dramatically which is why the tire manufacturers decrease the speed rating of a tire which has been patched.
For me, I have no interest in racing my Taycan or any car. I bought my Taycan for its looks, it’s Porsche handling and it’s EV acceleration off the line and passing on the highway. My days as a youth pushing my vehicles to their top end speed are long gone.
I enjoy a high quality engineered ride like Porsche offers. If I wanted to race a car on a track I’d buy a formula one in XXL since a normal formula one car doesn’t come in my width. I can get in but getting me out would require a crane with the car chained to the ground to break my ass free, stuck in the tiny cockpit…
Unfortunately too many steaks, too much wine, bourbon & cigars along with age has made my body incompatible with high performance cars, boats or planes.
That’s ok, as long as Porsche designs enough room for me to get in and get out without assistance from others or a cherry picker in my garage then I’ll continue to buy Porsche after Porsche until I’m dead… Cheers!

https://www.tirerack.com/upgrade-garage/can-flat-tires-be-repaired

There is legal precedent of liability for non-temporary use of string patches. I could not find any statistics on failure rates.

I’m just beating a dead horse at this point.

I did test drive a 991.2 prior to buying a used Taycan CT, some of my prior oddball car choices were a VW Phaeton and an S550, I was considering a Boxster but then what I really wanted was too pricey for my sensibilities (718 Spyder RS), Alfa 4C, MB AMG GT-S, and current gen BMW M6 were also in consideration.
I’m an old guy so the charm of some ride compliance/control with exceptional steering, handling, and speed is really compelling.

I have to agree on the wine & bourbon, don’t think I can do an offshore powerboat again without damaging myself (but it was big dirty fun), never did planes, still thinking about doing some track days again, not sure how it would work with an EV.

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