Uploaded October 2021 | Updated September 2026, 2 weeks ago
The Michelin Pilot Sport 4 S, Bridgestone Potenza Sport and Goodyear Eagle F1 SuperSport are three of the very best ultra high performance road tires for sport cars, but just how usable are these tyres on track, as their design goal is not to be a track tyre?
To find out I've run a track day simulation on these tyres, using a FWD Golf GTI MK8, and run what I would describe as a typical track day.
Full test can be found here: tyrereviews.com/Article/2021-Tyre-Reviews-UHP-Summer-Tyre-Test.htm
We will test to see which is fastest, which offers the most grip, which has the best steering feel and handling, and look at how the tire wear during this extreme track driving.
It's worth noting the track used is very hard on the left front, as is the Golf 8 so the wear you see in this video will likely be higher than most tracks.
All tyres are 225/40 R18. More information on the tyres found in this video, including user reviews and tyre tests, can be found at the following links:
tyrereviews.com/Tyre/Michelin/Pilot-Sport-4-S.htm
tyrereviews.com/Tyre/Bridgestone/Potenza-Sport.htm
tyrereviews.com/Tyre/Goodyear/Eagle-F1-SuperSport.htm
If you have any questions on these tires please ask below.
The Michelin Pilot Sport 4 S, Bridgestone Potenza Sport and Goodyear Eagle F1 SuperSport are three of the very best ultra high performance road tires for sport cars, but just how usable are these tyres on track, as their design goal is not to be a track tyre?
To find out I've run a track day simulation on these tyres, using a FWD Golf GTI MK8, and run what I would describe as a typical track day.
Full test can be found here: tyrereviews.com/Article/2021-Tyre-Reviews-UHP-Summer-Tyre-Test.htm
We will test to see which is fastest, which offers the most grip, which has the best steering feel and handling, and look at how the tire wear during this extreme track driving.
It's worth noting the track used is very hard on the left front, as is the Golf 8 so the wear you see in this video will likely be higher than most tracks.
All tyres are 225/40 R18. More information on the tyres found in this video, including user reviews and tyre tests, can be found at the following links:
tyrereviews.com/Tyre/Michelin/Pilot-Sport-4-S.htm
tyrereviews.com/Tyre/Bridgestone/Potenza-Sport.htm
tyrereviews.com/Tyre/Goodyear/Eagle-F1-SuperSport.htm
If you have any questions on these tires please ask below.
![Are Modern Runflat Tires Finally Good? Normal, RFT and SEAL Tires Compared!
Runflat [RFT] tires have a bad reputation for low levels of comfort, being noisy, and poor grip especially in the wet. But how much of this is down to the fact the tire is a run flat tyre, and how much of it is down to it just being a bad tire?
To find out Im testing a normal regular car tire against a fourth generation runflat tire with exactly the same compound and tread pattern. This means the the only difference is that the runflat tire has the extra support in the sidewall.
Runflat tires are called different things by various manufacturers:
Hankook: Hankook Runflat System - HRS
Goodyear / Dunlop: RunOnFlat - RoF
Michelin: Zero Pressure - ZP
Bridgestone: DriveGuard
Continental: Self Sealing Reifen - SSR
Pirelli: Run Flat - R F
To make things even more interesting, Ive included a sealant tire, which is a normal tire with a complicated sealant material bonded to the inside which seals any small punctures the tire might get in the tread pattern.
As always Im testing the dry and wet grip of the three types of tires, and perhaps even more importantly, doing extensive noise and comfort testing to see if a modern run flat tyre is now more comfortable than the earlier versions.
I also test whether a sealant tire really can be punctured multiple times, and I test whether you really can run on a runflat tire for 80 kms at 80 km/h.
The tire used in this test is the Hankook Kinergy 4S2 all season tire - https://www.tyrereviews.com/Tyre/Hankook/Kinergy-4S2.htm
Please review your tires at www.tire-reviews.com !
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Chapters
0:00 What is a runflat and seal tire?
1:31 Puncturing the SEAL tire. Does it work?
2:37 Dry Handling and Braking Testing
6:21 Wet Handling and Braking Testing
7:55 Noise and Comfort of Runflat vs Normal vs Seal Tires
10:44 Running a runflat deflated
14:17 Why you cant repair a runflat
15:01 Hydroplaning, Rolling Resistance, Wear and Price Information
15:46 Safety and Conclusion
Music by epidemicsound.com Are Modern Runflat Tires Finally Good? Normal, RFT and SEAL Tires Compared!](https://i.ytimg.com/vi/sTRn1E1uF6c/mqdefault.jpg)









