Wendell, you might get more responses in the Engine Forum. Provide information on the size and year of your engine.

You also might want to post your engine serial number, and various block and head casting codes.
Let's assume you have the original 216 engine: code locations on 216 engines

What "bearing inserts" are you referring to?
Are you referring to the connecting rod bearing shims or main bearing shims that are described in the 1950 Truck Shop Manual?

Regarding your wheels and tires: the wheel and tires will not affect engine bearings and/or shims.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.