New tires!
 

Last summer I had too much flats on my way to/from work so today I ordered two Schwalbe Marathons instead of my current Schwalbe Land Cruiser. The rear tire also have cracks on the sidewalls so I think anyway I have to replace it.
Same size 700x35c
Hope it will have better protection.

good choice.

no flats since I've installed mine.

also, quite affordable in 23-622.