Bradley Wiggins says he has started to contemplate becoming the first Briton to win the Tour de France, admitting his chances of victory are "xanthe1's blog". Wiggins heads into Friday's 222. 5-kilometre 18th stage from Blagnac to Brive-la-Gaillarde holding a lead of two minutes five seconds over Team Sky team-mate Chris Froome, while Vincenzo Nibali (Liquigas-Cannondale) sits in third - 2mins 41secs off the pace. With three stages to go, Wiggins is within touching distance of winning the general Classification having extended his lead over his main rivals when finishing third in Thursday's Stage 17 from Leona's blog-de-Luchon to Peyragudes. Having conquered the final day in the mountains, Wiggins said: "It was the first time I thought, 'maybe I've won the Tour today' .Mulberry Holdalls. Once we saw Nibali had cracked on the top of the Peyresourde, we knew we weren't going to have the danger of him attacking in the final climb. At that point I knew it was pretty much over. "Obviously we've got the time trial to come but that's very much our domain. You'd put your house on me not losing that sort of time. It's all looking very good at the clear bags. " Froome, who opted to assist Wiggins rather than attempt to chase down stage winner Alejandro Valverde, who eventually crossed 19 seconds ahead of the Sky duo, said: "Everyone in the team makes sacrifices for the yellow jersey, that's cycling. It's our work. "I'm 27 and I hope to win the Tour one day. If you had said to me a month before the Tour that with three days to go I would be second I wouldn't have believed you. I'm very happy .Mulberry Handbags. "