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Home  >  275 / 45 21  >  Altenzo Tyres  >  Altenzo 275 / 45 21
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  Altenzo    275/45  21     

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Fronway Eurus 08
Fronway
Eurus 08
275/45 R21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  151.67 £
limited stock
Details
Grenlander Icedefensor Stud II
Grenlander
Icedefensor Stud II
275/45 R21 110T XL studdable

Tyre type

 Winter tyres
limited stock
just  153.55 £
limited stock
Details
GT Radial SportActive 2
GT Radial
GT Radial
SportActive 2
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 69 dB
just  153.70 £
available
Details
Linglong Grip Master C/S
Linglong
Linglong
Grip Master C/S
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 73 dB
just  154.19 £
available
Details
Dynamo MSU01
Dynamo
MSU01
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 71 dB
just  155.14 £
available
Details
Dynamo Street-H Pursuit SUV
Dynamo
Street-H Pursuit SUV
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 71 dB
just  157.26 £
available
Details
Landsail RapidDragon SUV
Landsail
Landsail
RapidDragon SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip B Noise emissions 72 dB
just  157.67 £
limited stock
Details
Zeta Impero
Zeta
Zeta
Impero
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip B Noise emissions 73 dB
just  164.76 £
limited stock
Details
Momo Toprun M-30 Europa
Momo
Toprun M-30 Europa
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 73 dB
just  166.90 £
available
Details
Tracmax X-Privilo S360
Tracmax
X-Privilo S360
275/45 R21 110T XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  166.98 £
limited stock
Details
Sonix Winter Xpro 999
Sonix
Winter Xpro 999
275/45 R21 110H XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip D Noise emissions 71 dB
just  167.75 £
limited stock
Details
Zmax WinterHawke II
Zmax
WinterHawke II
275/45 R21 110H XL

Tyre type

 Winter tyres
available
just  169.00 £
available
Details
Firestone Roadhawk 2
Firestone
Firestone
Roadhawk 2
275/45 R21 110Y XL, Enliten / EV

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 71 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 250294
29.07.2025 from Tom
These tyres in my rear wheel drive BMW are grippy in the dry, but leave me yearning for more in the wet. The car will "step-out" if I punch it whilst the road is even midly damp. My tracking was done at the same time as having these fitted so that is not a factor. The car will also step out if the road is more greasy looking.
(1)

Reifentest.com

just  169.94 £
limited stock
Details
Leao Winter Defender Ice-I15
Leao
Leao
Winter Defender Ice-I15
275/45 R21 107T

Tyre type

 Winter tyres
limited stock
just  175.98 £
limited stock
Details
Sonix Winter Xpro Studs 69
Sonix
Winter Xpro Studs 69
275/45 R21 110T studded

Tyre type

 Winter tyres
available
just  176.21 £
available
Details
Kleber Dynaxer HP 5 SUV
Kleber
Kleber
Dynaxer HP 5 SUV
275/45 R21 107V

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 72 dB
just  177.96 £
available
Details
Falken EUROALL SEASON AS220PRO
Falken
Falken
EUROALL SEASON AS220PRO
275/45 R21 110W XL, VCs BLK

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 71 dB
just  180.04 £
available
Details
Yokohama Geolandar X-CV (G057)
Yokohama
Yokohama
Geolandar X-CV (G057)
275/45 R21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 72 dB
just  183.35 £
limited stock
Details
Maxxis Victra Sport 6 SUV
Maxxis
Maxxis
Victra Sport 6 SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 72 dB
just  185.68 £
available
Details
Kumho WinterCraft WS71 SUV
Kumho
Kumho
WinterCraft WS71 SUV
275/45 R21 110V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
just  185.94 £
available
Details
Continental CrossContact LX Sport
Continental
Continental
CrossContact LX Sport
275/45 R21 107H MO, EVc

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  187.57 £
limited stock
Details
LASSA Competus H/P 2
LASSA
Competus H/P 2
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
just  187.59 £
limited stock
Details
General Grabber GT Plus
General
General
Grabber GT Plus
275/45 R21 110Y XL, EVc

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 73 dB
just  189.99 £
available
Details
Falken AZENIS FK520
Falken
Falken
AZENIS FK520
275/45 R21 110Y XL, VCs BLK

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 71 dB
just  191.46 £
available
Details
Kleber Dynaxer HP 5 SUV
Kleber
Kleber
Dynaxer HP 5 SUV
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 73 dB
just  191.58 £
available
Details
Kumho WinterCraft WS71 SUV
Kumho
Kumho
WinterCraft WS71 SUV
275/45 R21 110V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
just  192.53 £
available
Details
Prinx Xnex Sport EV
Prinx
Xnex Sport EV
275/45 R21 110Y XL, EV

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance A Wet grip B Noise emissions 71 dB
just  193.98 £
limited stock
Details
Mazzini Snowleopard 3
Mazzini
Snowleopard 3
275/45 R21 110H Nordic Compound

Tyre type

 Winter tyres
available
just  194.96 £
available
Details
There are 28 of 136 tyres displayed
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