I had the bike serviced yesterday and some new wheels and tyres put on, only to get out early this morning and find that the rear tyre had a disagreement with a nail. Yes, the road is already shoot enough with potholes that belong on a 3rd world mountain track (Clevedon to Yatton B3133), that now I have to worry about people leaving nails all over the place. It's a real shame because I'm just about done with that road and hence one major route onto the Mendips is now out of bounds. Anyway, have replaced the inner tube and the tyre seems to be holding but...and I don't know if such a product exists, is there anything I could use to seal the small gash on the exterior of the tyre or is it just going to wear much sooner? If so, how much sooner or best scenario at all will it wear sooner? Worst scenario, should I just replace the damned tyre? What do you think?