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Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H

(BMW X5 2000-03, 2007, 2009-18, X6 2015-19; Acura MDX 2006-13; Audi Q7 2007-15; Tesla Y 2026-27; Porsche Cayenne 2008 + 17 more models)

Part of: Toyo Tires Observe GSI-6 HP Winter Tire

Other options in this family: Toyo Tires 149980 Toyo Tires 174700 Toyo Tires 149510 Toyo Tires 149440 Toyo Tires 149550

Manufacturer

Picture for manufacturer Toyo Tires

Part Number

174590
8 reviews
Sale Price

$159.44

In Stock (10+)

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Usually delivered within 2 days

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Show details for Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H
Picture of Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H
Picture of Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H
Picture of Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H

Wheels and Tires sold separately

Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H — image 1
Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H — image 2
Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H — image 3
Toyo Tires 174590 Observe GSI-6 HP Winter Tire 255/55R18 109H — image 4
Product Details

The Toyo Observe GSI-6 HP is a high-performance winter tire engineered to deliver superior traction and handling in cold weather, snow, and ice conditions. Designed with advanced winter tire technology, this tire carries the Three-Peak Mountain Snowflake (3PMSF) symbol, certifying it meets stringent snow traction performance requirements.

Key Features:

  • Directional tread pattern optimizes water and slush evacuation while enhancing grip in winter conditions
  • Advanced winter compound remains flexible in freezing temperatures for improved traction and braking
  • Three-Peak Mountain Snowflake certified for severe snow service
  • High-density multi-wave sipes provide enhanced ice and snow grip while maintaining tread block rigidity
  • Wide circumferential grooves channel water and slush away from the contact patch to resist hydroplaning
  • HP (High Performance) construction delivers responsive handling and cornering stability

The Observe GSI-6 HP combines confident winter performance with comfortable ride quality, making it an ideal choice for drivers of crossovers, SUVs, and light trucks who demand reliable cold-weather traction without sacrificing on-road manners.

Products specifications

Fits

BMW X5 2000-03, 2007, 2009-18, X6 2015-19; Acura MDX 2006-13; Audi Q7 2007-15; Tesla Y 2026-27; Porsche Cayenne 2008; Mercedes-Benz ML350 2006-07, 2009-10, ML320 2007-09, ML500 2006-07, R350 2006-10, R500 2006-07, ML250 2015 + 11 more models

Ply Rating

XL

Tire Size

255/55R18XL

Measuring Rim Width

7.

RPM

716

Radial Bias Flag

R

Service description

109H

Load Index : 2271@50
Speed Rating : H
Load Index and Speed Rating

109

Max PSI

51

Tread Depth

12.0

Load Range

SL

Max psi : 50
Origin

Japan

Section

255

Aspect Ratio

55

Rim Size

18

Overall Diameter

29.0

Load Index

2271@50

Load Capacity (LB)

2271

Maximum Pressure (psi)

50

Speed Rating

H

Sidewall

Black

Easy to find the parts I needed! Smooth transaction process!

fast and easy to navigate

thanks. good quick service

thank u

Easy to use site.

thank you

No worries.

Difficult part to find and you had it!!

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