DECISION ORDER
ORDERED that the order is affirmed insofar as appealed from, with costs.
The disclosure available pursuant to CPLR 3101 generally is left to the sound discretion of the trial court (see,Silcox v. City of New York, 233 A.D.2d 494 ). The Supreme Court providently exercised its discretion in denying the plaintiffs' request for information concerning Navistar International Transportation Corporation's design and use of bumper plates and smooth flanges on certain vehicle models. The plaintiffs failed to make a threshold showing of relevance between the vehicle models for which discovery was sought and the vehicle identified as having been involved in the accident (see, Cirineo v. Pepsi Cola Bottling Co. of New York, 260 A.D.2d 341 ). The record contains insufficient proof that the vehicle models for which disclosure was sought are sufficiently similar in design to the vehicle claimed to be defective so as to sustain the disclosure sought by the plaintiffs (see, Cirineo v. Pepsi Cola Bottling Co. of New York, supra; Breslauer v. Dan, 150 A.D.2d 324 ).