450 ft-lb is me standing on the end of 26" breaker bar.
I never retorque my nuts, but one time one of them got itself tighten up to over 2000 ft-lb. Took me 8 foot long pipe extension, with double lever on jack stand what start bending the factory wrench.
Finally got my wife with sledge hammer and when I put the torque on wrench -she tapped the socket what finally broke the hold.
Just a warning that it might happen. Some owners of coaches with air system carry 3/4" impact wrench for such adventure.
Regardless if you DIY, or take to shops - get one of those rim protecting rings.
Not too many truck tire shops worry about scratches.
