JARGON BUSTERS

Summer Pattern vs. All-Season

Summer tyres use hard compounds for maximum dry/wet precision above 7°C. All-Season tyres use flexible rubber and sipes for grip in both sun and snow. Due to Ireland's mild climate, most drivers prefer Summer tyres (like Primacy 5) for year-round use, though All-Season (CrossClimate 3) is growing for "peace of mind" without seasonal swaps.

Quick Guide: Markings & Features

• XL / FR: Reinforced for weight (XL) and rubber ridges to protect alloys (FR).
• OE Marks: Custom-tuned for MO (Mercedes), AO (Audi), VOL (Volvo), ★ (BMW), and T0 (Tesla).
• 3PMSF: Snowflake symbol certifying legal safety for severe winter and snow.
• EverGrip: Evolving grooves ensure high safety even as the tyre wears.
• MaxTouch: Even pressure distribution for 15% better mileage.
• EV Ready: Optimized for high torque and battery range preservation.

Popular 21" Saloons, Hatchbacks & Estates

• Audi A8 / e-tron GT: Premium models use AO-marked 21" for a balance of performance, range, and luxury ride quality.
• BMW 7 Series / i7: Executive saloons require 21" fitments to manage their advanced safety systems and heavy chassis.
• Mercedes S-Class / EQS: Flagship luxury EVs rely on MO-marked 21" tyres for refined silence and high-speed stability.
• Tesla Model S: Performance and Plaid variants use T0-marked 21" wheels for maximum electric traction and optimized range.
• Porsche Taycan: This high-performance electric saloon uses specific 21" fitments for essential grip in all conditions.
• Volvo V90 Recharge: Top-spec R-Design estates utilize VOL-marked 21" tyres for robust safety and weight management.
• Lucid Air: The Grand Touring saloon uses 21" wheels to achieve its record-breaking efficiency and range figures.
• Jaguar XJ: These luxury saloons use large 21" fitments to deliver a commanding aesthetic and confident road handling.
• BMW 8 Series: Gran Coupé models use 21" to ensure dynamic performance matches the luxurious styling.
• Audi A7: High-end Sportback models use 21" as the ultimate expression of style and year-round performance.

Load Rating
The load index is a numerical code for the maximum kilograms a single tyre can safely support. For safety, the combined capacity of all four tyres must exceed the vehicle's maximum loaded weight. 

Speed Rating
A letter-based code indicating the maximum kilometres per hour a tyre can sustain. Higher ratings are engineered to better manage the heat and stress of increased velocities. 

Quick Reference Guide

• Check your requirements: You can find the specific requirements for your vehicle on the tyre information plate (usually located on the driver-side door pillar) or in the owner's manual.
• Replacement rule: It is vital never to fit a tyre with a lower load index or speed rating than those recommended by the manufacturer.
• Common Ratings: Standard ratings include T (190 kph), H (210 kph), and V (240 kph). You can view a full conversion table below..

These 2026 fitments provide elite year-round performance for the Irish climate. Most sizes are reinforced (XL) with rim protection (FR) and are EV Ready.

Available 21" Sizes:

• 245, 35, R21, 96Y, XL, FR
• 245, 40, R21, 100Y, XL, FR
• 255, 30, R21, 93Y, XL, FR
• 255, 35, R21, 98Y, XL, FR
• 255, 40, R21, 102Y, XL, FR
• 265, 35, R21, 101Y, XL, FR
• 265, 40, R21, 105Y, XL, FR
• 275, 30, R21, 98Y, XL, FR
• 275, 35, R21, 103Y, XL, FR
• 285, 30, R21, 100Y, XL, FR
• 285, 35, R21, 105Y, XL, FR

OE (Manufacturer Approved) Versions:

• 265, 35, R21, 101Y, AO
• 255, 40, R21, 102Y, MO
• 255, 40, R21, 102V, VOL
• 265, 40, R21, 105Y, T0