2408... not super oldhmm.. not sure but that sure dont look too normal. Whens the manufacture date on your tires? Look next to the DOT thing and itll have some numbers i believe its like week# and year so like 1407 would be 14th week of 2007, I believe..
he had a little cracking, not as bad as yours but id say yours looks normal considering his are new-ish too and his were like the size of the smaller ones in your pic. I wouldns stress over it
Thanks fellas, I aired down to about 40psi a couple days ago just because.Two of mine were 3-4 yrs old like yours and they looked just like that. You'll be fine. (although I sold mine after about 15k miles or so. I guess I'm not the most reliable source )