- "40" profile is good for a 225mm tire on an 18" rim.
- "35" profile for that 225mm tire on a 19" rim.
A 245/40 profile tire is going to be really thick.
Run your numbers through the
Tire Size Calculator and you'll see what I mean.
As well, it will rub. Bad. Doesn't mean that can't be fixed though. Delete the fender liners and roll the metal fenders. Run spacers to clear the suspension springs.
What a pain in the azz though, get the right size and you'll thank yourself..