They've been fortunate in a lot of ways. They started the season in awful fashion against the two Manchester clubs, but settled once the window was closed and Modric remained with the team. The schedule has been kind to them in some respects as they've played the majority of their more difficult games at home and they've had a long stretch between mid-October onwards where the majority of their opponents were in the bottom half of the table. Their key players haven't suffered long-term injuries or suspensions and they've been able to quietly build momentum over the course of the season without a glaring media spotlight.
The big test for them will be the period between January 22nd and March 31st, which includes away fixtures against Liverpool, Manchester City, Chelsea and Arsenal and a home game against Manchester United. If one or more players of the Bale, Adebayor and Van der Vaart triumvirate were to be injured for several weeks or months during that time, they could be in serious trouble, especially given how packed it is in the top six or seven positions. Newcastle were fourth in late November, but after injuries began to take their toll, they've only picked up five points in their last five games and are sitting in seventh. Granted Spurs have a bigger and much better squad than Newcastle, but it doesn't take much for a team to begin to slide once a few things go off the boil, as we've seen many times with ourselves.
Spurs are peaking now. Cant be much doubt about that, they're playing some very good football and picking up a lot of points.
But is the contingency there?
King is still a crock and liable to have to retire at any minute.
The rest of their defence is hardly anything to write home about.
Friedel's no spring chicken.
Nor is Parker
Modric is always likely to want a move away. And will be massively in demand.
Bale ditto.
Adebayor is only on loan, and is prone to going off the boil.
Defoe and Pav both want out.
Redknapp will be out of there in the summer.
So yes, at the moment they're looking very good. But can't help but get the feeling that this is the crest of their wave.
I'd agree with this summary. They shored up the gaping holes in the summer that have needed to be filled in for several seasons (consistent goalkeeping, a proper holding midfielder and a solid striker), but in reality those signings were a short-term fix. It will be interesting to see how things pass for them in the summer, because if they have a mare in the second half of the season and miss out on the CL, the whole thing could collapse like a house of cards.