VW Polo manuals

Volkswagen Polo Service & Repair Manual: Cross-Section of a Radial Ply Tire

Cross-Section of a Radial Ply Tire

1 -  Tread Block
2 -  Tread Groove
3 -  Tread
4 -  Nylon Ply
5 -  Belt Layers
Consists mostly of steel
6 -  Bead Bundle
Consists of steel wires vulcanized into rubber
Make sure secure seating of the tire on the rim
7 -  Bead Filler
8 -  Wheel Flange Protection
Protects the rim and tire from abrasion due to, for example, contact with the curb.
Tires with flange protection are designated by the abbreviation MFS.

 
The nylon ply -4-, belts -5-, bead cores -6- and bead reinforcements -7- make up the carcass. The carcass is the “load-bearing structure” of the tire.
Overview - Radial Ply Tire
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Run-Flat Tire, Structure and Identification, SST Tire
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Other materials:

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If a vehicle comes to the workshop with the complaint “vibration”, a road test must be performed before balancing the wheels. That way, information about the type of vibration can be obtained. Obser ...

Tires, Bringing to Mounting Temperature
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Heel and Toe Wear
Heel-and-toe wear is step-like wear of individual tread blocks, due to which an increased rolling noise can develop. The heel-and-toe wear is caused by the uneven distortion of the tread blocks in the contact patch. Heel-and-toe wear appears in more extr ...

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