I ride a recumbent trike pulling a large Carry Freedom trailer, so my wear patterns are slightly different.
Back tyre:-
If I do a lot of steep hill climbing in the wet, then I suffer a bit from the tyre slipping on the road due to lack of weight on it.
This means that I can wear a tyre out in under 1,000 miles.
But between 3,000 and 4,000 miles is more normal.
Front tyres:-
If I knock the tracking badly out of line, then I can wear a tyre out in under 100 miles, don't ask me how I know this ......
If the tracking is slightly off, then they start showing signs of wear after around 1,000 miles.
But if the tracking is spot on, then 8,000 to 10,000 miles is more normal.
Trailer tyres:-
As there's very little load on them, they don't wear out.
The last set where still going strong after 20,000 miles.
I tend to use then as spares, after I've worn one of the tyres on the trike, while on tour.