Quote:
Originally Posted by cRiPpLe_rOoStEr
Worse than retreadings are the regroovings I often see in Brazil.
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I used to work with a guy that previously worked for Michelin for more than a decade working on commercial tires. According to him a commercial tire can be used 9 times:
1. The original tread
2. Face on a lathe and groove
3. Face on a lathe and groove
4. 1st Retread
5. Face on a lathe and groove
6. Face on a lathe and groove
7. 2nd Retread
8. Face on a lathe and groove
9. Face on a lathe and groove
For each regroove or retread a mark is burned on the side of the tire. According to him retreads aren't a problem if they are done right. They fail for the same reason that original tires fail - overheating due to underinflation.