Bridgestone 315/35 R21 111Y Dueler H/P Sport N0 2024

The Bridgestone Dueler H/P Sport N0 315/35ZR21 111Y XL is a premium summer performance tyre developed for high-performance SUVs and luxury sport utility vehicles. Designed with Porsche N0 homologation, this rear-axle size combines a wide 315 mm section width, 35-series profile and 21-inch rim diameter with an XL reinforced construction. Its 111 load index supports up to 1,090 kg per tyre, while the Y speed rating is designed for speeds up to 300 km/h. The exact specification is also identified as 300 A A under the UTQG system, with a 9/32-inch tread depth and an approved rim-width range of 10.5–12.5 inches.

About Bridgestone 315 \ 35 R21 Dueler H/P Sport N0

The Dueler H/P Sport is Bridgestone's high-performance SUV tyre range, designed to provide responsive road handling while maintaining the characteristics expected from a premium SUV tyre. The 315/35ZR21 version is specifically marked with Porsche N0 homologation, making it an approved tyre specification for applicable Porsche vehicles. Bridgestone's own tyre-size documentation lists the 315/35 ZR21 (111Y) H/P SPORT with N0 approval.

315/35ZR21 Size and Low-Profile Design

The 315/35ZR21 configuration is a wide, low-profile rear tyre intended for large performance-oriented SUVs. The 315 mm nominal section width provides a broad contact footprint, while the 35-series aspect ratio keeps the sidewall relatively short for a more direct steering and handling response. The tyre has an overall diameter of approximately 29.6 inches, with a measured rim width of 11 inches and an approved rim-width range of 10.5–12.5 inches.

111Y Load and Speed Rating

The 111 load index corresponds to a maximum rated load of 1,090 kg per tyre under the applicable load-index system. The Y speed rating corresponds to speeds up to 300 km/h. The tyre is also marked (111Y) in its ZR service description, indicating a high-speed performance specification suitable for vehicles requiring this level of tyre capability.

XL Reinforced Construction

This exact N0 version is specified as XL, or Extra Load. The reinforced construction is designed for the higher load requirements associated with large, powerful SUVs while maintaining the low-profile characteristics of the 315/35ZR21 format. The tyre is tubeless and uses a radial construction.

Dry Road Handling and Steering Response

The wide footprint and low-profile construction are suited to responsive road handling. The Dueler H/P Sport is positioned as a street-performance tyre for high-output trucks and SUVs, with the 315/35ZR21 N0 specification developed for Porsche applications. Its construction is intended to provide stable road contact and predictable response during cornering and high-speed driving.

Wet Performance

The exact 315/35ZR21 N0 specification carries an EU wet-grip rating of A. This indicates that the tyre meets the highest category within the EU wet-grip classification system. The tyre also uses a high-silica performance approach within the Dueler H/P Sport range, supporting wet-road traction alongside its dry-road performance characteristics.

Summer Road Use

This tyre is classified as a summer tyre and is intended primarily for paved-road use in warm-weather conditions. It is not a winter tyre and does not carry a 3PMSF winter certification. Its design focus is high-speed road performance rather than snow or severe winter traction.

Rolling Resistance and External Noise

The exact N0 315/35ZR21 specification is listed with an EU rolling-resistance rating of C and an external rolling-noise level of 75 dB. These EU label values should be considered separately from the tyre's UTQG ratings and describe standardized European performance classifications.

UTQG Performance Rating

The exact 315/35ZR21 N0 specification is listed with a UTQG rating of 300 A A. The first value, 300, represents the treadwear grade, while the two letter grades represent traction and temperature respectively. This is a separate rating system from the EU tyre label.

2024 Production Year

This listing specifies the production year as 2024. The exact manufacturing week should still be verified from the DOT/date code on the tyre sidewall, as the production year alone does not identify the precise manufacturing week.

Who Should Consider This Tyre?

The Bridgestone Dueler H/P Sport N0 315/35ZR21 111Y XL is suited to drivers who require a high-performance summer SUV tyre in a Porsche-approved specification. It is particularly relevant for applications using a 315/35ZR21 rear fitment and requiring N0 homologation, XL construction and a Y-rated performance specification. Buyers should always confirm the vehicle manufacturer's approved tyre size, axle position and homologation requirements before fitting.