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Home  >  255 / 40 18  >  Triangle Tyres  >  Triangle 255 / 40 18
Identify the size of your tyre
The exact dimensions of a tyre can be found on the sidewall printed mark. The graphic shows how to read properties and dimensions of the tyre:
 
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SPEED INDEX:
The speed index indicates the maximum speed intended for the tyre. Up to this value, the manufacturer guarantees optimum operation with the appropriate tyre pressure. The maximum speed allowed for this vehicle is given in the vehicle owner's manual; this information can be used to select the appropriate speed index for the tyre. The speed index is the last mark on the sidewall of the tyre.
 
Load Index
Permissible maximum axle load per tyre in kg. To be found in the registration certificate or vehicle registration document or read directly from the tyre (two-digit number). It is permitted to fit a tyre with a higher load index.
 
Driving safety despite puncture
Runflat tyres are puncture-resistant tyres with reinforced sidewalls. This creates the so-called run-flat property. In the event of damage, this allows the vehicle to continue driving up to a distance of approx. 100 km (and even beyond depending on the product) at a maximum speed of 80 km/h, even if the pressure has been completely lost. Run-flat tyres even prevent the tyre rubber from jumping off the rim in the event of a loss of air pressure. A flat tyre is therefore still a flat tyre, but it loses some of its drama. Note: All run-flat tyres are marked with the symbol "RSC" (Runflat System Component) and may only be fitted in vehicles with a functioning air pressure control system!
 
Tyres with increased load capacity
Reinforced tyres are designed for higher loads than normal tyres. They can be identified by the designation 'RF' (reinforced) or also 'XL' or 'Extra Load'. They are used on vans, minibuses, off-road vehicles, etc. However, their mounting alone does not automatically result in higher load capacity but also requires a correspondingly higher air pressure. Furthermore, the load capacity index specified in the vehicle documents continues to apply.
 
Tyres with extra high load capacity
The "C" in the term C tyres stands for "commercial". These tyres are specially designed for commercial vehicles. These can be, for example, lighter trucks, delivery vans, flatbed trucks or panel vans. In other words: vehicles that have to move higher loads at a comparatively lower speed. The multi-ply reinforced C tyres are therefore even more load-bearing than reinforced tyres.
 
Mobility-optimised tyres
A tyre with a sealing layer on the opposite side of the tyre tread. In the event of a puncture (e.g. by a nail), this layer blocks any loss of air, even if the foreign body causing the puncture is still in the tyre. It is not necessary to stop or change the tyres immediately at the roadside.
 
Mobility-optimised tyres
A tyre with a sealing layer on the opposite side of the tyre tread. In the event of a puncture (e.g. by a nail), this layer blocks any loss of air, even if the foreign body causing the puncture is still in the tyre. It is not necessary to stop or change the tyres immediately at the roadside.
 
Tyres optimised for electric vehicles.
Tyre developed for electric vehicles. These tyres can also be used without hesitation on vehicles with other drive systems.
 

Our offer for  Triangle    255/40  18     

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Yokohama Advan A052
Yokohama
Yokohama
Advan A052
255/40 R18 99Y XL

Tyre type

Supersport Road

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip A Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 21000
16.12.2025 from Edward Nunn
these are on my track/fun car and replaced the 20 year old tyres on it which came with the car, they completely changed the performance of the car, for the better, they grip exceptionally, especially when set to optimum pressure for the conditions, and hold traction under very heavy braking. They are as described a dry weather tyre with the ability to just about cope in the wet, and my experience is of dry track days with a very wet drive cross country the day before a track day which was ok, although i could feel a massive loss in traction crossing white lines on the motorway, and the morning before a track day driving through wet cool lanes which required a huge amount of care and attention not to end up in a hedge.
(1)

Reifentest.com

just  263.22 £
available
Details
Continental WinterContact TS 860 S SSR
Continental
Continental
WinterContact TS 860 S SSR
255/40 R18 99V XL *, EVc, run-flat

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(3)
Average based on 3 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 276396
28.06.2025 from Charles Hillman
The tyres perform well. At that price I would expect no less. (But Michelins tend to cost even more than Continentals.) We don't get a lot of snow in Essex, England these days, but when we lived in parts of Germany where (at least then) it snowed in winter we always found Continental Winter Tyres performed well. And indeed I've left the winter tyres on for the summer this year. Partly through laziness. But also, low profile summer tyres look "cool" with alloy in the show rooms, but with all the pot holes and broken roads here in England, slightly thicker tyres on (slightly smaller) steel rims offer better resilience (and comfort). Economy penalty must existnotably inrespect of fuel, but appears very marginal as long as the tyres remain fully inflated. Which (so far) they do without frequent top-ups. Though I appreciate that reading what I just wrote makes me sounds very old. Ainsi soit il. And it still feels odd to be asked to review Winter Tyres in June.
09.11.2023 from Michael Yates
These are great winter tyres which I run all year round ( living in rural Wales). The problem is getting them in the size I need. I generally have to order at least 3 months before I am going to need them so this review is actually for the tyres I bought two years ago and which still have about 5000 miles (8000 km) wear left. The original summer tyres fitted to the car when I bought it new only lasted 25000 miles so these Continentals actually represent good value for money - and they don’t skid on muddy farm tracks in summer. I had a puncture and the runflat function worked well. But these tyres cannot be repaired by the usual method and there was no chance of getting a new pair of tyres in this size (have to replace in pairs on this car). My only option was the ‘slime’ injection which has worked perfectly. No loss of pressure over the last 5000 miles.
18.03.2022 from Claire Hunter
A much more balanced and user friendly tyre than the Pirelli winters they replaced which were supplied by BMW. Less tramlining. More precise grip and steering yet also more comfortable ride. Unable to accurately comment on fuel consumption as I haven’t monitored it that closely. Snow use not really tested this winter in the UK so can’t comment with any true experience.
(3)

Reifentest.com

just  254.76 £
available
Details
Continental IceContact 8
Continental
Continental
IceContact 8
255/40 R18 99T XL EVc, studded, with kerbing rib

Tyre type

 Winter tyres
limited stock
just  297.16 £
limited stock
Details
Yokohama Advan A052
Yokohama
Yokohama
Advan A052
255/40 R18 99Y XL

Tyre type

Supersport Road

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip A Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 21000
16.12.2025 from Edward Nunn
these are on my track/fun car and replaced the 20 year old tyres on it which came with the car, they completely changed the performance of the car, for the better, they grip exceptionally, especially when set to optimum pressure for the conditions, and hold traction under very heavy braking. They are as described a dry weather tyre with the ability to just about cope in the wet, and my experience is of dry track days with a very wet drive cross country the day before a track day which was ok, although i could feel a massive loss in traction crossing white lines on the motorway, and the morning before a track day driving through wet cool lanes which required a huge amount of care and attention not to end up in a hedge.
(1)

Reifentest.com

just  315.63 £
available
Details
Continental VikingContact 8
Continental
Continental
VikingContact 8
255/40 R18 99T XL EVc, Nordic Compound, with kerbing rib

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip D Noise emissions 70 dB
just  330.12 £
available
Details
Nokian Hakkapeliitta 01
Nokian
Nokian
Hakkapeliitta 01
255/40 R18 99T XL Aramid Sidewalls, studded, with rim protection (MFS)

Tyre type

 Winter tyres
available
just  350.08 £
available
Details
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