Bridgestone Turanza T005 Premium Summer Tyre – 255/35 R21 98Y XL (AO Homologation)

Original premium summer tyre with official factory homologation Audi Original (AO) in size 255/35 R21, designed for Audi A7 Sportback and S7 (4K / 4K8 generation) cars, as well as Audi A6 C8 (type 4K2 / 4K5 / 4KA) produced from model year 2018 to 2026, including versions with 3.0 V6 TFSI (55 TFSI / 340 hp), 2.0 TFSI and TDI diesel engines with quattro all-wheel drive, based on the modular longitudinal MLBevo platform.

Factory Bridgestone product used for original equipment (OEM) fitment in the VAG group. The Turanza T005 asymmetrical tread pattern has been optimized for immediate water evacuation, short braking distances on wet surfaces, and quiet operation at motorway speeds. The tyre features a reinforced XL (Extra Load) internal carcass construction and an integrated rubber rim protector (FSL / MFS / FR), which effectively protects 21-inch aluminium alloy wheels from curb scratches when parking.

Technical specifications:

• Manufacturer: Bridgestone

• Tread model: Turanza T005

• Size: 255/35 R21 (255/35/21)

• Load index: 98 (up to 750 kg per wheel) – reinforced XL (Extra Load) construction

• Speed rating: Y (up to 300 km/h)

• Manufacturer homologation: AO (Audi Original) – dedicated to Audi AG group models

• Rim protector: Yes – factory aluminium wheel rim protector (FR / FSL / MFS)

• Season: Summer

• Tread depth:

  Even tread, checked with a professional digital tread depth gauge (value to be completed, e.g., ~6.0–6.5 mm / no side cuts)

• Rolling direction: Asymmetrical tread (OUTSIDE / INSIDE) – universal for left and right sides

• Condition: Original part, used (100% functional – pressure tested on the rim, not repaired with a plug, no patches on the sidewalls, no bulges, cracks, protrusions, or tread block feathering)

Main application:

• Audi:

  • A7 Sportback (type 4K8) – factory 21-inch wheel size (model years 2018–2026)

  • S7 Sportback (type 4K8) – model years 2019–2026

  • A6 / A6 Avant / Allroad (type 4K / C8) – factory 21-inch rims (model years 2018–2026)

  • S6 Avant / Saloon (type 4K - C8) – model years 2019–2026

• Other premium brand models requiring size 255/35R21 with load index 98Y XL.

Fitment guarantee and verification

Each tyre undergoes a rigorous pressure test on a professional balancer/test machine to check for radial runout, micro-leaks, and bead wire damage.

Fitment / mounting tip: AO (Audi Original) homologation means a dedicated silica compound for Audi group cars, which works perfectly with the all-wheel drive system electronics (quattro / quattro ultra) and ESC/ABS systems. In all-wheel drive cars, it is recommended that the difference in tread depth between tyres on the same axle and between the front and rear axles does not exceed the manufacturer's permissible limits (usually max. 1.5–2.0 mm), which protects the inter-axle differential mechanism from overheating. The tyre is mounted according to the OUTSIDE marking on the outside of the rim. Before purchase, we recommend comparing the tyre size entered on the B-pillar of the vehicle or verifying it using the vehicle's VIN.