Obviously i know i need to get a new tire as soon as i can, but is it safe to ride it like this in the meantime come spring until i can afford to get it replaced? The tire is a tubeless Bridgestone Spitfire S11, 100/90/18. My bike weights about 510lbs and i am around 240lbs. I'm still new to riding (since last summer) and haven't reallly gotten into doing the tire pressure vs. weight figuring out yet.
I bought the bike in September and at the time i don't remember seeing any cracks in the tire. The rear tire was new and is still fine, but the front i have no idea how old it is. I really can't say for sure when the cracks started or if they were already there but sometime around October or early November i noticed them, they go all around the sides near the rim and are a couple millimetres deep in places. The tread itself is fine and still has lots of depth. I did around three highway trips of 300k in late October on them like this before i noticed. Was i pushing my luck?