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An Ultra-High-Performance Summer Tire With an Asymmetrical Tread
The Atturo AZ850 is an ultra-high-performance summer tire designed with an asymmetrical tread pattern for a wider, more stable contact patch. A solid center rib delivers directional stability at speed, while large outside tread blocks improve cornering grip, making it a strong fit for sport sedans, coupes, and performance SUVs.
Key Features
- Asymmetrical tread design optimizes the contact patch for grip and stability
- Solid center rib improves straight-line, high-speed stability
- Large outside tread blocks enhance cornering performance
- Extra Load (XL) construction rated for higher load capacities
- Y speed rating supports sustained high-speed performance driving
Fitment
| Vehicle | Application | Component | Notes |
|---|---|---|---|
| Universal | All Makes | Fitting 255/40R19 | Sport Sedans, Coupes, Performance SUVs |
Specifications
| Detail | Value |
|---|---|
| Atturo item number | 50007 |
| Tire size | 255/40R19 |
| Load index/speed rating | 100Y XL |
| Overall diameter | 27 in. |
| Section width | 10.2 in. |
| Approved rim width | 8.5-10.0 in. |
| Tread depth | 10/32 in. |
| Max load | 1,764 lbs. @ 50 PSI |
| UTQG | 320 A A |
What's Included
- 1 tire
About the Brand
Atturo Tires designs and distributes a broad tire lineup spanning ultra-high-performance, all-terrain, and everyday passenger applications, offering a value-focused alternative for enthusiasts and daily drivers alike.
FAQ
What size is this tire?255/40R19, with a 100Y load index and speed rating in Extra Load (XL) construction.
What is the maximum load capacity of this tire?1,764 lbs. at 50 PSI maximum inflation pressure.
What rim width does this tire require?An approved rim width of 8.5 to 10.0 in.
Is this a summer-only or all-season tire?This is a summer/high-performance tire, not rated for winter conditions.
What does the UTQG rating mean?320 A A indicates the treadwear, traction, and temperature grades under the DOT's Uniform Tire Quality Grading system, with A being the highest available traction and temperature grades.
Is this tire directional or asymmetrical?Asymmetrical, meaning the inner and outer tread halves are designed differently for a wider effective contact patch.
How many tires does this listing include?This listing is for 1 tire, order the quantity needed for your vehicle.
What is Atturo's warranty on this tire?Contact Atturo or your retailer for specific treadwear and workmanship warranty terms on this tire.
Installation Instructions
- Verify your vehicle's tire size and load rating requirements before ordering.
- Have the tire professionally mounted and balanced on your wheel.
- Install on the vehicle and torque lug nuts to the manufacturer's specification.
- Check and set tire pressure to your vehicle's recommended PSI.
- Re-torque lug nuts after the first 50-100 miles of driving.
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