Hello,

I had maybe 1-2 puncture (max) the whole 7 months (april to october) and this month I had 4 punctures.
1 caused by a hole I didn't see (hard to with the leafs).
3 I have no idea. I rolled on a fairly big rock I didn't see so I think it's the cause of my last puncture (slow) but it's not like I haven't rolled on rocks during the other 7 months with no problem.
I am slowing thinking it might be caused by the temperature. I usually put 100-105 psi in the tire (it says inflate to 100). Should I put less? I believe the tire might be more rigid due to the lower temperature. Next year I am planning to buy some winter tires but for now my budget says no.

Sometimes "it" happens.

Cooler weather often brings other factors increasing flat possibilities. Wet roads, more crap on the roads, greater riding on the edge of the road (where more crap is), tires are that much more worn, More load on the bike/body, less light for seeing the crap on the road, and less rider attention to the bike in general. We see far more flats early and late in the season (for the miles ridden) then in the Summer. Andy.

If you have been riding with the same tires all year, they are getting thinner as they wear. Thus they are more prone to punctures. As well, the rubber in your tires may be drying out a bit and may not be as supple as it was at the start of the season. When I was commuting a lot, I used to notice that my tires became much more flat prone as they wore down. The rubber would dry out and become less flexible. Wet roads make things even worse. Small sharp rocks tend to stick to the tire tread and work their way through the tire casing. The thicker rubber in a new set of tires is more resistant

+1

The one thing we can be sure of is that the temperature isn't the issue. But people do tend to get flats ,ore often in the Fall or when it's wet. It's simply that there's more debris on the roads, or that the debris is moved out where we ride.

Also, whenever you get multiple flats in close order, you have to consider the possibility that they may be related to a single cause that wasn't corrected.

Wet rubber = more flats.

Ask any tire shop.

(This may or may not be your issue as it usually is about punctures caused by metal debris)

more cr*p on the road?

All the reasons people have been giving are true. There is another thing that can happen. Sometimes, flats just seem to come in bunches, for no apparent reason

I thought something was in the tire or the rim causing the puncture but it began to happen in front too while rear was fine.
I guess it is time to put some wacky hybrid bike tires until I get something more appropriate!
Thanks all!