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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  Bridgestone  315/30  23   

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Prices include VAT and delivery within Ireland

Bridgestone Potenza Sport
Bridgestone
Bridgestone
Potenza Sport
315/30 ZR23 (108Y) XL B-Silent, with rim protection (MFS)

Season

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 73dB
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.

(40)
Average based on 40 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 driven10160290
18.12.2025fromKeith
Unlike some who write stuff thinking they&#39;re lewis hamilton, im not, but im no miss daisy either. Ive driven it pretty hard at times and whatever has been thrown at these tyres, wet or dry, they have stood up to it. Not a hint of losing it. Exactly what you expect, from mid range premium make tyres.
30.08.2024fromClive Smith
These are the B-Silent Model and they were 235/55 R19 105Y but this system will not let me specify 55 height. These tyres are absolutely brilliant! I fitted them on the rear and they stopped the road noise from the rear completely. I just wish I had not fitted something different to the front previously, as soon as the fronts wear out I will change to these. I have had no problem with grip, despite racing others around roundabouts.
28.10.2021fromFluster
Excellent in the wet, no hydroplaning or wheeljerk when driving into puddles at speed. This is my second set of this tyre for this reason.
13.10.2021fromAgop Beyleryan
The tyre is with overall good performance. On wet is losing grip in the corners, however braking in wet conditions is solid
(40)

Reifentest.com

List price*  € 615.00
just  € 527.10
Free shipping for ordering minimum 2 pieces.
available
Details
Free shipping**
2 - 5 working days delivery time***
Bridgestone Potenza Sport RFT
Bridgestone
Bridgestone
Potenza Sport RFT
315/30 ZR23 (108Y) XL B-Silent, with rim protection (MFS), runflat

Season

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 72dB
List price*  € 695.00
just  € 595.77
Free shipping for ordering minimum 2 pieces.
limited stock
Details
Free shipping**
2 - 5 working days delivery time***
Show all the tyres in the selected size
Yokohama Advan Sport (V107E)
Yokohama
Yokohama
Advan Sport (V107E)
HL315/30 R23 111Y XL *, RPB

Season

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance DWet grip ANoise emissions 71dB
List price*  € 596.00
just  € 455.56
Free shipping for ordering minimum 2 pieces.
limited stock
Details
Free shipping**
2 - 5 working days delivery time***
Michelin Pilot Sport 4S
Michelin
Michelin
Pilot Sport 4S
315/30 ZR23 (108Y) XL Acoustic, K1, with rim protection ridge (FSL)

Season

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip ANoise emissions 73dB
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.

(6)
Average based on 6 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 driven884622
24.11.2021fromOliver Mwanza
The driving experience with Michellin tyres is superb. Will always use Michellin till further notice
13.03.2021fromMichael
B road driving with the odd motorway and A road. Excellent grip in all conditions, I bought these over pilot sports as I wanted to use them all year round. As long as the temp is above 6 degrees they are fine to push anything below that proceed with caution but they are certainly not ditch finders. I will be doing track on them aswell mainly due to changeable uk weather these are the perfect tyres to drive to track in with confidence.
17.01.2020fromKram Kuntz
I find the tyres to have outstanding grip once the tyres are warm, comfort is far better than any other tyre i&#39;ve used, these are the 2 most important aspecs for me, as my driving style is quite enthusiastic, and being a fast rear wheel drive car, the last thing I need is the traction control light lighting up every 5 sec&#39;s, but when these tyres get warm I rarely see it. I&#39;m so impressed with them that I bought another set for my other wheels, they&#39;re the best tyre I&#39;ve ever fitted
(6)

Reifentest.com

List price*  € 676.50
just  € 588.27
Free shipping for ordering minimum 2 pieces.
limited stock
Details
Free shipping**
2 - 5 working days delivery time***
There are 4 of 4 tyres displayed
**Prices include VAT and delivery within Ireland.
***More than 90% of our orders reach the customer in the specified delivery time.

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