Are Avon tires cr6zz directional?

Markus

SPRF40
Lifetime Supporter
A buddy told me today that the Avon cr6zz is (was) a directional tire - I never heard of this!? Do you?

A quick AI search brought this up:

The Avon CR6ZZ is a bit of a unique case. Technically, the tread pattern is symmetrical and looks like a classic non-directional tire. However, Avon officially recommends a specific direction of rotation based on whether the tire is fitted to a drive wheel or a steer wheel.

1. The Short Answer
They are not strictly "directional" in the way a modern V-shaped tire is, but they are directional-dependent for maximum performance and durability. You will find a "Direction of Rotation" arrow on the sidewall, which you should follow.

2. Mounting Guidelines​

According to Avon Motorsport's fitting guide, the rotation depends on the vehicle's drivetrain:

  • Rear-Wheel Drive: * Rear tires: Rotate in the direction of the arrow.
    • Front tires: Rotate opposite to the arrow (this helps the tire cope with braking forces).
  • Front-Wheel Drive: * Front tires: Rotate in the direction of the arrow.
    • Rear tires: Rotate opposite to the arrow.
  • Four-Wheel Drive: * Generally, all four are mounted to rotate in the direction of the arrow.

3. Why the Confusion?​

Because the CR6ZZ is a competition-based radial designed for classic cars, the internal construction (the way the "plies" or belts are wrapped) is optimized for specific loads.

  • Drive wheels need to handle high acceleration torque.
  • Steer wheels need to handle high braking torque.
By reversing the direction on the non-drive wheels, you are ensuring the internal splice of the tire is being "pressed down" rather than "peeled back" under the heaviest loads.

Wheel TypeMounting Instruction
Driven Wheels (e.g., Rear on a Cobra)Arrow points forward (Direction of travel)
Non-Driven Wheels (e.g., Front on a Cobra)Arrow points backward (Opposite travel)

 
If no arrow:

1776194644565.png
 

Yuji

Lifetime Supporter
Still waiting to see if the wheels are still on ?? Frank
Frank, the photo here was taken last December when I joined track day event.
After installing all the components you’ve supplied, my GTD40 becomes different toy which provides pretty comfortable chassis!
Thank you so much your effort to send me those even very difficult timeframe due to pandemic situations.
Now I’d like to know tire pressure of Avon for coming track day event in June at Fuji Speedway!
Thanks
Yuji
 
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