Uploaded December 2025 | Updated September 2026, 2 weeks ago
The BFGoodrich All-Terrain KO3, Bridgestone Dueler A/T Ascent, and Cooper Discoverer Stronghold AT are three of the most popular all-terrain tires on the market. But which one is right for you?
In this comparison, I test all three tires in the same size (LT 275/65R18 E) on the same vehicle at the same pressures to find out how they really differ. I cover on-road comfort, noise levels, steering feel, and off-road traction on my desert test loop.
What I found:
- BFGoodrich All-Terrain KO3 - Impressively tough and quiet, but also the heaviest (58 lbs)
- Bridgestone Dueler A/T Ascent - The comfort king with the best NVH, but steering feels lazy
- Cooper Discoverer Stronghold AT - The sharpest handling and best off-road balance, but firmest and noisiest
Quick Specs:
All three are 3-Peak Mountain Snowflake rated and cost within $10 of each other on TireRack.
BFGoodrich All-Terrain KO3 TA: 50,000-mile warranty | Made in USA
Bridgestone Dueler AT Ascent: 60,000-mile warranty | Made in Canada
Cooper Discoverer Stronghold AT: 60,000-mile warranty | Made in USA
Here is the link to the wonderful tirerack test tirerack.com/tires/tests/taking-off-road-tires-on-road?ttid=337
Be sure to follow TireRack on YouTube too.
=====
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You can support Tyre Reviews at patreon.com/tirereviews
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You can read about the Tyre Reviews testing ethics, and commitment to unbiased, open testing here: tyrereviews.com/Article/Tyre-Reviews-Review-Ethics.htm
= Chapters
0:00 Introduction
2:12 Tire Specs / Weight / Tread
4:45 On Road Comparison
10:10 Off-Road Comparison
13:09 Snow and Wet Data
17:20 Conclusion and final thoughts
The BFGoodrich All-Terrain KO3, Bridgestone Dueler A/T Ascent, and Cooper Discoverer Stronghold AT are three of the most popular all-terrain tires on the market. But which one is right for you?
In this comparison, I test all three tires in the same size (LT 275/65R18 E) on the same vehicle at the same pressures to find out how they really differ. I cover on-road comfort, noise levels, steering feel, and off-road traction on my desert test loop.
What I found:
- BFGoodrich All-Terrain KO3 - Impressively tough and quiet, but also the heaviest (58 lbs)
- Bridgestone Dueler A/T Ascent - The comfort king with the best NVH, but steering feels lazy
- Cooper Discoverer Stronghold AT - The sharpest handling and best off-road balance, but firmest and noisiest
Quick Specs:
All three are 3-Peak Mountain Snowflake rated and cost within $10 of each other on TireRack.
BFGoodrich All-Terrain KO3 TA: 50,000-mile warranty | Made in USA
Bridgestone Dueler AT Ascent: 60,000-mile warranty | Made in Canada
Cooper Discoverer Stronghold AT: 60,000-mile warranty | Made in USA
Here is the link to the wonderful tirerack test tirerack.com/tires/tests/taking-off-road-tires-on-road?ttid=337
Be sure to follow TireRack on YouTube too.
=====
Please consider reviewing your tires at TyreReviews.com 💖
You can support Tyre Reviews at patreon.com/tirereviews
Follow Tyre Reviews on instagram: instagram.com/tyre_reviews
Really love tires? Come join us on Reddit: reddit.com/r/TyreReviews
You can read about the Tyre Reviews testing ethics, and commitment to unbiased, open testing here: tyrereviews.com/Article/Tyre-Reviews-Review-Ethics.htm
= Chapters
0:00 Introduction
2:12 Tire Specs / Weight / Tread
4:45 On Road Comparison
10:10 Off-Road Comparison
13:09 Snow and Wet Data
17:20 Conclusion and final thoughts








![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 !
Follow me on instagram for all the latest tyre related updates: https://www.instagram.com/tyre_reviews
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)

