6000 km and half of the profile is missing. ( most km is made at low speed...to work and back )
Weak in curves because, it has too soft sides. Not for sport driving in sharp bends...

it is fairly quiet and comfortable, but I will definitely change them for something better.

I carried out a lot of research for 225/40R18xl and 255/40R18xl for my Lexus F Sport. The previous tires were Continentals and I could not get on with them as well as they were at 3.5mm. Someone suggested I look outside of the box re brands and hence NEXEN. The cost for a mid range was well received at £375 including tracking. The previous reviews were pretty good and in essence they were accurate. I have only covered 1000 miles so this is very much an initial review only. Wet weather journey over 250 miles in heavy rain was an eye opener as the road holding, feeback and braking were very very good! Dry weather braking and road holding were also very good the following day and 250 miles return journey. I cannot speak for the wear as yet given the mileage covered so far. If the last 1K has been an indicative example then it bodes well. The NEXEN warranty and service support is also excellent should I have to avail myself :-), have a look at their www site for details. More to follow in 9k.

I carried out a lot of research for 225/40R18xl and 255/40R18xl for my Lexus F Sport. The previous tires were Continentals and I could not get on with them as well as they were at 3.5mm. Someone suggested I look outside of the box re brands and hence NEXEN. The cost for a mid range was well received at £375 including tracking. The previous reviews were pretty good and in essence they were accurate. I have only covered 1000 miles so this is very much an initial review only. Wet weather journey over 250 miles in heavy rain was an eye opener as the road holding, feeback and braking were very very good! Dry weather braking and road holding were also very good the following day and 250 miles return journey. I cannot speak for the wear as yet given the mileage covered so far. If the last 1K has been an indicative example then it bodes well. The NEXEN warranty and service support is also excellent should I have to avail myself :-), have a look at their www site for details. More to follow in 9k.

Good tire in handling and grip, but bad quality sidewall, I had them for 10k miles and it has lots of deformation and holes in the sidewall, has to change them really quick

I have them for 20.000 km on a family car and the wear is much worse that it should be for in city routes, thats the major disadvantage.

The grip was good the first 10.000 km but after that it goes bad.

I have 20" wheels with low profile tires on an Audi A6 S-Line, and the Pirelli's PZero that the car came with offered good road feedback but were getting increasingly hard, uncomfortable and noisy as they started to get older. So when they finally went, I wanted to replace them with something more quiet and comfortable, but also good in the wet and with a decent handling level. The NFera SU1 is exactly the type of tire i was looking for.

Positives: very comfortable, extremely quiet for a 255/35/R20 tire (Nexen says 68dB), good wet grip, great price
Negatives: not so good road feedback and dry braking (compared to the PZero), handling is average

The wear level is nothing special, it wears a bit faster than the PZero, because the SU1 is a softer tire, but not by much. I have done about 12k miles and they seem to be about half their original thread height.

These are comfortable, quiet and grippy tires which inspire confidence in both wet and dry conditions, but even with a relatively easy going driving style like mine (I try and eke as many miles out of a tank of fuel as possible), these tires are just too soft for a heavy car like the Merc CLS and wore out way too quickly for me to ever consider buying them again. I bought them in April last year and they're already almost totally bereft of tread after only 10 months and 11,000 miles. With a deeper tread depth from new, the Nexen N8000's I had on before them seem to be slightly harder wearing and just as comfortable and grippy, but I think I'll give the (allegedly) longer lasting Barum Bravuris 3HM's next time as I just can't be done with the time, trouble and cost of having to replace my tires every year.

Have been using these on my A1 Sport Plus. 189hp in a light front wheel drive would generally be considered a recipe for serious wheelspin and understeer, but these tires transformed the car into an incredibly grippy hot hatch. Combined with lowered suspension, the car is totally transformed and I definitely would recommend them to anyone particularly with a high powered front wheel drive. Nitrogen filled, so fuel economy has seen slight improvements and tires are reasonably comfortable with little to no increase in road noise. In the wet, they can be prone to aquaplaning early on, this would be my only complaint.

I shopped around, did my research based on performance and particularly wanted a balance of low noise and low rolling resistance plus was limited by my tire size on my i8 wheels but of all the options including Goodyear, Continental and Dunlop, these scored high on paper only short of the Goodyear Efficientgrip and were less than half the price of the primes above and better than all mid-range tires on price and paper.
I'm so glad I went with the Nexen N'Fera SU1, although they have 10% less sidewall than the Bridgestones before, they have a smoother ride on fine sharp surfaces (man holes, repaired tarmac, concrete joints etc) and are hugely quieter, almost silent below 30mph which is fantastic for my car in electric mode, its near silent.
The tires are also lighter in weight helping steering reaction in spite of their size and in every aspect improving and helping the suspension to perform. I've even noticed as a result that my front top mount is worn which was indistinguishable with the harsh and loud Bridgestone's before.
My GTE has a capacity to lay down torque ~300ft.lbs in a go and even flooring it on wet roundabouts' hen the inside would break traction the car steered well and the drift/understeer was very controllable and correctable. I'm very impressed by the progression and control given the price range if the tire.
I absolutely would recommend these and no doubt will be getting a new set in no time due to the mileage I do. Right now though they have only done a few miles so still fresh.

Positive sides of this tire are precise handling, excellent braking characteristics both on straight road or curves, very good wet grip, I was never even near to aquaplaning. Very low wear, somewhere over 1mm in 10500 km on a car that is not gentle towards tires. Not so comfortable, it seems to me that they transfer a lot of vibrations to chassis. Moderate noise, it appears to me that they have substantial rolling resistance based on the fuel consumption. Pretty difficult for parking maneuvers as they give more resistance than my winter tires. They came pretty cheap so I would buy again.

I was quite suspicious of the Nexens before buying, but the seller did a good job convincing me. I had bought several tires from him before so I trusted his opinion. Switched from Michelin Pilot Sport 2 to these.

A few thousand km after I'm really happy with them. Quieter than the PS2, better dry and wet grip. Perhaps the progressiveness is a bit worse than on the PS2, but it is hard to estimate well as it would need a track day, too scary to find the limit in normal traffic!

Not the tire for the a5 quattro at all, weak sidewalls, poor handling, unpredictable. You can feel the tires sufferring under heavy braking or cornering The grip and wear levels are ok. I find tramlining and intermittent noise to be an issue and the tires have worn unevenly giving strange handling quirks.

You get what you pay for and this tire is no exception. I would not reccomend this tire for the Audi A5 3.0 TDI at all and am changing them after 10k miles as I cannot risk the tires degrading further.