Originally Posted by rekmeyata

The only reason TI fails is at welds, and the reason they fail there is due to an error in the welding process that allowed contamination to get into the welding process and made the weld brittle. So yes if a repair is needed on a TI frame not any joe blow welder can weld it!

Most reputable TI builders will honor their warranties or they won't be in business long once the internet comes alive with problems associated with their frames and failure to stand behind it. Lynskey has been building TI frames forever, he was the owner and creator of LiteSpeed. And the company that builds Motobecane ti road bikes hasn't had any failures that I could find on the internet, they did have a TI mountain bike frame fail but that was due to very rough use which is why Motobecane doesn't sell TI mountain bikes anymore, and also Bikes Direct would not honor one of the MTB failures due to the fact the owner took off all the decals and Moto specifically said their warranty is null and void if you remove the decals...BUT Bikes Direct and Motobecane sent the person a new frame anyways! That's good service from a company that a lot of LBS workers and owners that hang here bad mouth them a lot about. But most companies do have that decal clause, so it's not just a Motobecane thing, you have to read your warranty very carefully to make sure you understand what you can and cannot do. You can read about one of the MTB failures here and what BD did: FLY Ti 29er frame crack- Mtbr.com

Besides my Scandium bike that had the headtube crack wasn't warrantied because they said it was fatigue even though the bike had about 10,000 miles on it. I've known people who took their CF bikes in from all sorts of big name brand bike companies and the fall back position to prevent a claim is fatigue or the customer crashed it. Originally the company my bike was through tried to claim I crashed it but the LBS and I said the bike was all original and there wasn't any damage to anything else therefore it was impossible the damage was due to a crash, so the company changed it to fatigue once they knew they were going to lose on that point. Both the LBS and I argued the point about the fatigue but short of getting a lawyer which would have cost more than the frame was worth we weren't going to win. It does seem though that most warranty issues seem to come more from the Italian side of the world where they won't replace nothing ever, but American companies like Trek, Cannondale, Specialized, etc have had their issues too. There was a guy with a Lynskey who noticed that when he received his bike and had all put together he couldn't get the rear wheel to align up in the stays with the frame, Lynskey replaced the frame with an upgraded frame! I had a friend who had outstanding service from Vitus, he was a large pro bodybuilder and broke 3 of their frames back in the 80's, each time they replaced it no questions asked, Cannondale and Klein both did the same thing when he broke 2 each of their bikes, but that was the 80's when bike companies were struggling for customers.