F-Type ( X152 ) 2014 - Onwards

Run-Flats, Anyone?

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Old Jan 11, 2021 | 02:14 PM
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Default Run-Flats, Anyone?

I hate not having a spare tire in the F-Type, and I am not excited about learning how to use the compressor and the bottle of goo, and even less excited about being stranded in the middle of nowhere waiting for AAA. When I bought the F, I was told by the dealer that the reason it had the compressor and goo was that there were no run-flats that met the performance requirements of the car. Well the car is now 6 years old and I am told that there has been a great deal of improvement in run-flats and I know that BMW and MB use them all the time on a wide variety of cars. SO, has anyone out there identified a good decent run flat for the F. 19" Wheels, Daily Driver, Never over 100 MPH. No track. Thanks.
 
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Old Jan 11, 2021 | 08:42 PM
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I would be for them too as long as the ride didn't suffer too badly, I hate the goo and inflator idea.
 
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Old Jan 12, 2021 | 03:42 AM
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Don't know the modern situation, but I had them in the past on other cars, and my daughter had them recently on a mini cooper s.
All experiences bad.
On the Cooper, my daughter had permanent slow leaks on all tyres, even when replaced by new wheels and tyres.
On my car, I had no leaks, but found that in very hot weather the tyres went out of balance as if the goo inside had shifted.
I like the theory, but experience puts me off
 
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Old Jan 12, 2021 | 04:38 AM
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You apparently have 8 options:
19” F-Type tires (hit the runflat filter)

but do you really want to get pounded by the ride?
 

Last edited by Unhingd; Jan 12, 2021 at 04:42 AM.
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Old Jan 12, 2021 | 06:31 AM
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I have had several performance cars with run-flats and disliked them all.
The reduced noise, improved handling and better ride comfort that came from upgrading to non run-flats has always been worth the potential headache of having to call a flatbed or use the mobility kit (pump&goo)
MM
 
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Old Jan 12, 2021 | 08:17 AM
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I'm not sure I trust the goo to work so I bought a portable jack, folding lug wrench, and plug kit which I keep in the storage area below the trunk cover. Although I can't do anything if there's sidewall damage, at least I can temporarily repair most puncture leaks when away from home.
 
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Old Jan 12, 2021 | 01:46 PM
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As others have said run flats seem to have stiffer side walls which may contribute to a firmer ride.

Run flats have been fitted as standard to Nissan GT-R for many years, the 2011 model had a maximum speed of 196mph so there won't be any issues on the F Type.

GT-R used to have Bridgestone, subsequently they fitted Dunlop Sports Max RT
 
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Old Jan 12, 2021 | 02:52 PM
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Most reviews you read from owners with stock run flats say they are not the best. Similar to f-type owners saying they don’t like the stock Pirelli P Zero’s. I’d rather get something nicer and deal with a flat when that happens.
 
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Old Jan 12, 2021 | 03:02 PM
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Not sure why people are hung up on flat tires and the goop/compressor. I have been driving for 44 years now, started my career as a salesman driving over 50k per year. so I figure in my life I have driven over 1,760,000 miles. In my entire driving life experience, I have had the grand total of 2 flat tires. Both were able to hold air for a few hours, so just drove to tire shop and had it fixed. Most of my modern cars just have the goop/compressor and have never spent one minute worrying about it. AAA will take care of it.
 
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Old Jan 12, 2021 | 04:27 PM
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I've owned several versions of run-flat Michelins on my previous C5 & C7 Corvettes. I find those run-flats to be far superior in ride & performance than these stock P-zeros.
Plus the peace of mind of run-flats...
 
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Old Jan 12, 2021 | 04:53 PM
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I had run flats on a RAV4 and HATED them but that was a while ago. Ride was extremely harsh. Supposedly they have gotten better.
Anyway I live in an area that gets a lot of hail. That means new roofs constantly and a lot of roofing nails as well. In the past 5 years I have had 4-5 punctures on my Tacoma, 3-4 on my wife’s CR-V and one on a motorcycle. Only one of those would have left us on the side of the road if we didn’t have a spare. The rest were just slow leaks that I drove on for a few days until I noticed and took it to the tire shop.
My plan is to put together a repair kit with those sticky rope things, a can of slime and the stock compressor. Might consider a jack to make plugging easier.
The only time I would need it would be on a trip. Around town I’m not worried.
 
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Old Jan 12, 2021 | 07:29 PM
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Had two punctures with the F-Type. One was a screw that leaked slowly enough I could keep it inflated long enough to get it patched. The other was a bit more challenging. Exhibit A:

 
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Old Jan 12, 2021 | 07:38 PM
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Wow - I'm surprised that pencil didn't snap when you ran it over with the F Type...
 
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Old Jan 12, 2021 | 07:42 PM
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Originally Posted by BritCars
Wow - I'm surprised that pencil didn't snap when you ran it over with the F Type...
The lead was soft, but the rest of the pencil was serious business.
 
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Old Jan 12, 2021 | 07:56 PM
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Default John Wick?

Definitely looks like John Wick is “working” again.
 
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Old Jan 13, 2021 | 12:45 PM
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Originally Posted by BritCars
Wow - I'm surprised that pencil didn't snap when you ran it over with the F Type...
Now that's funny, LMAO
 
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Old Jan 14, 2021 | 05:43 AM
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I've had run flats on a series of BMWs for over 10 years. Previous comments regarding them progressively getting better are right on the mark. I'd offer that, at face value, they're close competitors. That said, two other considerations. Unsprung weight and replacement cost. F Type stock wheels are already robust (heavy) and run flats will always be heavier. Expect a ride and handling sacrifice if you retain the stock wheels (remember too, those extra strong wheels provide a measure of safety). Also, if you do get a puncture in a run flat, they're often tougher to repair or less likely repairable. And they will cost more to boot.
 
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Old Jan 15, 2021 | 05:52 PM
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Run flats when I last investigated were good for about 50 miles. Both flat tires in my f type were too close to sidewall to repair and I was more than 50 miles from home. Run flats may be as hard to get replacements for as our f type sizes. My business partner ubered home 100 miles after using up his run flat distance. Had to order replacements. Run flats are not a 100% solution, but may help if close to home or a dealer.
 
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