JARGON BUSTERS

Special Feature Markings

XL (Extra Load) / RF (Reinforced):

Meaning: The tyre has a stronger, reinforced internal structure to safely carry heavier loads.

• Why it matters: Essential for heavy vehicles, SUVs, and Electric Vehicles (EVs) which are heavier due to batteries.

FR or FSL (Rim Protector):

• Meaning: A protective ridge of rubber running around the lower sidewall near the wheel rim.
• Why it matters: Helps protect your expensive alloy wheels from scuffs and minor damage caused by accidentally brushing against a kerb.

EV Ready:

Meaning: A general design principle for this tyre range (not a specific code) focusing on low rolling resistance to save battery life, and special noise-reducing design for quieter EV cabins.

Manufacturer (OE) Approval Markings

These markings mean a car company (like Audi or Mercedes) specifically tested and approved this exact tyre version for their vehicles:

• MO: Mercedes-Benz Original Equipment Approval
• AO: Audi Original Equipment Approval
• VOL: Volvo Original Equipment Approval
• S1: A specific manufacturer code indicating efficiency or noise optimization.

10 Popular Saloons, Hatchbacks & Estates (20" Fitments)

• Audi A5 / A6 / A7 (S/RS Line models)
• BMW 5 Series / 6 Series GT (M-Sport trims)
• Mercedes-Benz E-Class (AMG-Line)
• Volkswagen Arteon (R-Line/Shooting Brake)
• Skoda Superb (L&K Estate/SportLine)
• Volvo V60 / V90 (R-Design/Polestar Estates)
• Tesla Model 3 / Model S (Performance variants)
• Jaguar XF (R-Sport/Portfolio Estate)
• Lexus ES
• Peugeot 508 SW (GT spec)

Summer vs. All-Season Tyres in Ireland

Summer tyres are Ireland's standard, providing peak efficiency and grip above 7°C. Due to the mild climate and rare snowfall, many motorists use them year-round. However, summer rubber hardens in the cold, increasing braking distances on freezing roads.

All-season tyres offer a "fit-and-forget" alternative. Their flexible compounds provide reliable grip in both sun and slush, ensuring safety during sudden cold snaps. They deliver consistent year-round performance without the cost or hassle of seasonal swaps.

Load Rating: Maximum Weight Capacity Explained

The load index is a numerical code representing the maximum weight in kgs that a single tyre can safely carry. To ensure safety, the combined capacity of all four tyres must exceed the vehicle’s total weight when fully loaded.

Speed Rating: Maximum Velocity Explained

Represented by a letter, the speed rating indicates the maximum kph a tyre can maintain over a prolonged period. Higher speed ratings are engineered to handle the heat and stresses generated at faster speeds more effectively.

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..

The following 20" sizes for the MICHELIN Primacy 5 are available in the Irish market for 2026. These large fitments are common on performance vehicles and premium SUVs, featuring Rim Protection (FR) and XL reinforcement as standard across the range.

Common 20" Versions

• 235, 35, R20, 92Y, XL, FR
• 235, 40, R20, 96W, XL, FR
• 235, 45, R20, 100V, XL, FR
• 245, 35, R20, 95Y, XL, FR
• 245, 40, R20, 99Y, XL, FR
• 245, 45, R20, 103W, XL, FR
• 245, 45, R20, 103Y, XL, FR
• 255, 35, R20, 97Y, XL, FR
• 255, 40, R20, 101Y, XL, FR
• 255, 45, R20, 105W, XL, FR
• 255, 45, R20, 105Y, XL, FR
• 265, 35, R20, 99Y, XL, FR
• 265, 45, R20, 108V, XL, FR
• 275, 40, R20, 106W, XL, FR