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Home  >  235 / 50 18  >  Sonix  >  Sonix 235 / 50 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  Sonix   235/50  18     

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Toyo Proxes TR1
Toyo
Toyo
Proxes TR1
235/50 R18 101W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance DWet grip BNoise emissions 70dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> offers over 430 000 tests firsthand - from consumers for consumers.

(10)
Average based on 10 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 driven1163340
09.11.2025fromNeil McTear
Far better grip than the Falkens that came with the car, although they still had lots of tread left, they were old and on removal it was found the sidewalls and beads were perished, and were the wrong size. Toyo are current the only manufacturer producing 205/45-15&#39;s and these had previously been unavailable for the previous decade, the improvement in both grip and roadholding is impressive, can&#39;t comment on wear yet due to limited mileage, fuel consumption difference - I haven&#39;t checked.
30.05.2022fromDavid Hardiman
Huge difference with the new Toyo Tires compared to the older ones I had on the car. These are the best tires I have ever used.
09.12.2019fromSebastian Dysarski
Good tire soft side wall so corners are average. But overall good price was okay wouldn&rsquo;t pay more
14.11.2019fromJoe
I drive an SW20 MR2 on (almost) original tyre sizes (Rear 225/50/15 and Front 205/50/15), so my choice is limited. For over a decade I&#39;ve used the original Proxes as they were pretty good all-rounders and good value. The new version are very good in the dry - communicative and grippy, you can feel the back end start to let go and everything is progressive and fun. However, the tread pattern gives me zero confidence in the wet as the pattern is in a v direction on one side of the car and a ^ direction on the other. Not a mistake, the &quot;Outside&quot; markings insist this way round. This has to have a huge impact on clearing standing water as the tread is reversed on one side of the car, so I have zero confidence in the wet as each side of the car will behave differently. Bring back the old style that were ^ all round please!
(10)

Reifentest.com

just  208.50 £
available
Details
Yokohama Ice Guard IG65
Yokohama
Yokohama
Ice Guard IG65
235/50 R18 101T XL studded

Tyre type

 Winter tyres
available
just  209.68 £
available
Details
Pirelli Winter SottoZero 3
Pirelli
Pirelli
Winter SottoZero 3
235/50 R18 101V XL MGT

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance DWet grip BNoise emissions 72dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> offers over 430 000 tests firsthand - from consumers for consumers.

(20)
Average based on 20 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 driven3406392
02.05.2026fromVictor N.
I like that quality of wet grip while driving do not diminish during the time of use.
28.07.2024fromPhilpott
Compared with my previous Michelins, and the Pirelli summer tyres, these disappoint. No confidence in the snow and they felt unnatached in the wet.
11.05.2023fromDanny Coetser
Bubble formed on side of tyre
20.02.2021fromMax E
I would like to say that these tyres saved our bacon this winter. We had lots of snow and ice over January and February this year and the tyres never lost an ounce of grip. Even when others were stuck and lost in snow drifts, the Scout got through. I was concerned about the wear of the tyres (bring softer than summet tyres but there was little wear showing on the Winter Tyres). Highly recommended for high speed road driving or off-road snowdrifts!
(20)

Reifentest.com

just  222.94 £
limited stock
Details
Hankook Winter i*pike X W429A
Hankook
Hankook
Winter i*pike X W429A
235/50 R18 101T XL 4PR studded SBL

Tyre type

 Winter tyres
available
just  224.41 £
available
Details
Goodyear Ultra Grip Arctic 2
Goodyear
Goodyear
Ultra Grip Arctic 2
235/50 R18 101T XL, EVR studded

Tyre type

 Winter tyres
limited stock
just  224.99 £
limited stock
Details
Nokian Hakka Black 3
Nokian
Nokian
Hakka Black 3
235/50 R18 101Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 70dB
just  235.99 £
available
Details
Continental IceContact 3
Continental
Continental
IceContact 3
235/50 R18 101T XL studded

Tyre type

 Winter tyres
limited stock
just  245.01 £
limited stock
Details
Falken WINTERPEAK F-ICE 1
Falken
Falken
WINTERPEAK F-ICE 1
235/50 R18 101T XL studded

Tyre type

 Winter tyres
limited stock
just  247.83 £
limited stock
Details
Barum Polaris North 6
Barum
Barum
Polaris North 6
235/50 R18 101T XL, EVc Nordic Compound

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip DNoise emissions 72dB
just  259.38 £
available
Details
Michelin X-Ice Snow
Michelin
Michelin
X-Ice Snow
235/50 R18 101H XL, EV Suitable Nordic Compound

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip ENoise emissions 69dB
just  268.82 £
limited stock
Details
Continental Viking Contact 7
Continental
Continental
Viking Contact 7
235/50 R18 101T XL Nordic Compound

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip DNoise emissions 72dB
just  274.48 £
limited stock
Details
Continental VikingContact 8
Continental
Continental
VikingContact 8
235/50 R18 101T XL, EVc Nordic Compound

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip DNoise emissions 69dB
just  288.64 £
limited stock
Details
Toyo Celsius AS2
Toyo
Toyo
Celsius AS2
235/50 R18 101V XL

Tyre type

 All-season tyres
available
just  633.12 £
available
Details
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