Yikes… I’ve ran Tekin ESC’s exclusively since the late 1980’s, their motors exclusively shortly thereafter, and they’re still without question the best to this day as well. Hell even a lot of hardcore HW guys will run a HW ESC (because it’s cheaper) , but pair it with a Gen 3 T8 motor.. Phantom has some wicked fast motors, as does Trinity/Revtech, but they’re wiiiiiiiiiide open cans… You couldn’t pay me to run that in 1/8 off-road, even in an indoor only setting..
All that being said-these motors absolutely do require routine maintenance, and cleaning.. A year doesn’t seem very long to me before having a catastrophic failure tbh.. I’ve got two T8’s currently that have just under 2yrs on them, and have been eleventybillion% trouble free.. One just happens to be the 2250kv you’ve got. It’s an absolute ANIMAL, and the other is a 2050kv buggy can. That one shoves my girl’s ET48 2.0 effortlessly..
You said you run a fan on yours… A few dumb questions first.. Have you temped your motor fresh off a run? MOST folks tend to run a fan to bandaid being overgeared.. a 17t is HUGE imo as mine is such a MISSLE w/a 15t, that to many it would be undrivable.. Even if your track has long legs, you would likely be much better off with a 15t.. How are your solder joints? This can be a serious choke point on any circuit, especially a brushless off-road 1/8 truggy.. Have you added timing? What’s your driving style like? Many folks don’t take into consideration how much heat your BRAKING generates..
Personally I’d wanna know you’ve verified that your motor temps never exceeded 185deg, no crazy timing (2250 truggy can will almost never need it), solid solder joints/no crazy bottleneck or avoidable internal resistance within your circuit, drop that gear a couple teeth, look at how your brakes are setup in your Hotwire, and absoluuuuuuutely see that the motor sees routine/regular maintenance, and cleaning (also checking/replacing bearings as needed).. Dust can definitely be a killer for sure, but I believe there are a few other variables that can, and should be addressed to be vigilant with one of the best combo’s around imho.