VW Golf manuals

Volkswagen Golf Service & Repair Manual: Cross section of a radial belted tyre

Cross section of a radial belted tyre

1 -  Tread block
2 -  Tread groove
3 -  Tread
4 -  Nylon ply
5 -  Belt layers
Usually made of steel
6 -  Bead core
Consists of steel wires vulcanised into rubber.
Ensures secure seating of the tyre on the rim.
7 -  Bead filler
8 -  Rim flange protection
Protects the rim and tyre from abrasion from, for example, contact with the kerb
Tyres with Maximum Flange Shield (or rim protector bar) are marked with the abbreviation MFS.

 
The nylon ply -4-, belt layers -5-, bead cores -6- and bead filler -7- form the carcass. The carcass is the “load-bearing structure” of the tyre.
Structure of a radial belted tyre
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