This is absolutely NOT NORMAL.  Do not repeat this or fly until you resolve it.

It sounds like this is preparation for first flight???  Did you build?

My L360 will track absolutely straight (with no cross wind) at any speed on the ground.

I do not know about the build procedures for a L235 but I assume there is a procedure to check that the tires are
parallel to the longitudinal axis of the airframe.  Ensure that this is done correctly.

Verify that the brakes are not dragging excessively or unevenly.

Also, try to verify that the tires are not grossly misshapen or out of round or out of balance.  Don't know how to measure this.
Do the tread surfaces show any evidence of rubbing/scrubbing across the tread?

Be careful.

Tom Thibault
LNC2

This morning I made several fast-taxi runs in my Lanciar 235/O-290-D2.