Challenger Tyres follow British Tyre Manufactures recommendation on the repairing of a punctured tyre British Standard BS AU 159.
Challenger Tyres will only repair tyres that have been damaged in the central three quarters of the tread known as the 'T' area as per the diagram below.
If the tyre in the above diagram was a 205/55/16 then the 205 would be the tyres nominal section width giving a repair width (T) area of 144mm giving 72mm each side of the tyres centre line.
|Tyre nominal section width||'T' value (mm)||Tyre nominal section width||'T' value (mm)|
6mm is the maximum diameter of penetration damage at the base of puncture in the ‘T’ area.
Challenger will always check a tyre thoroughly before any repair is done. Tyres displaying any defects from the list below will not be repaired.
- Inadequate tread depth (Legal minimum 1.6mm)
- Splits, cuts, rubber crazing/cracking
- Previous repairs
- Significant contamination by solvents e.g. liquid sealants
- Bead damage
- Secondary effects, e.g. under-inflation/deflation damage or savaging by the point of a penetrating object
- Tread or sidewall rubber separation
- Penetrations that are on the border line of the ‘T’ area will be done at the discretion of the tyre technician.
The visual inspection is very important part of checking the punctured tyre any doubts the tyre should not be repaired.