Question juridique clé
Whether the buyer could avoid the contract for fundamental mistake regarding the motorcycle's originality and frame parts.
Solution extraite
The alleged mistake was not essential in the objective sense; the originality of the frame was not a necessary basis of the bargain.
Motifs extraits
Given the motorcycle's age, visible modifications, the parties' motorcycle knowledge, and the price paid, it was objectively unreasonable to assume an original frame was a contract basis.