Your car has been in a front end smash, so no matter if the car had premature tyre wear issues in the past or not, it is in my opinion mandatory for it to have a full geometry check, even if you were told the car had no or little suspension damage. Like others have said all IS200/300's really should have the geometry check regardless, but more so in your case due to the accident.
Since you are from a similar area as myself, your closest geometry centre is Drury Lane in Oldham; just take the WIM settings with you or of course if you can make the trip to WIM then do so :)
Hope that helps.
Anees :)