Plaintiffs’ appeal from the Court of Appeal’s affirmance of a jury verdict of no cause of action in this products liability case.1
Plaintiffs commenced this action in Wayne County Circuit Court to recover damages for bodily injuries sustained in 1965 when their automobile went out of control after a blowout in its left front tire. Plaintiffs alleged that the blowout resulted from the defective manufacture of the tire. Defendant denied liability. It argued that the tire failure was caused by a cut from a foreign object and was not the result of any defect present in the tire.
I
On December 10, 1968 a pretrial conference was held in this case under the direction of GCR 1963, 301.1. As a result of the conference a pretrial *562summary was issued by the court according to the provisions of GCR 1963, 301.3. In relevant part the summary stated:
"EXPERT WITNESSES:
"The plaintiffs will have Loren J. Forney as their expert witness. The defendant, Firestone Tire & Rubber Company, will have an expert witness from their company and will furnish plaintiffs’ counsel with the name of said expert when plaintiffs’ counsel supplies defendant, Firestone Tire & Rubber with the address of Mr. Forney.
"DEPOSITIONS:
"The counsel for the tire company and the plaintiffs agree that the deposition of each others experts may be taken at a time and place to be agreed upon between the respective counsel, but this must be accomplished within the next sixty (60) days.”
Six days after the pretrial, plaintiffs’ counsel filed with the court the address of Mr. Forney and sent copies to defendant’s counsel. Defendant, however, did not furnish the name of its expert witness until April 22, 1970 and a deposition was not able to be arranged until June 17, 1970. Thus, plaintiff was not able to take the deposition of defendant’s expert until two weeks before the start of the trial on July 6, 1970.
At the commencement of the trial plaintiffs’ counsel objected to allowing any trial testimony from defendant’s expert witness, citing as the basis for the objection defendant’s failure to comply with the terms of the pretrial summary. The trial judge denied plaintiffs’ motion and subsequently allowed defendant’s expert to testify, offering the terse explanation that:
"You had a chance to take his deposition, and you *563did. I don’t care whether it is late or not. It is within my discretion. I exercise my discretion.”
Plaintiffs now ask us to find that the summary treatment of their motion by the trial judge constituted reversible error under GCR 1963, 301.3.2 They argue that rather than placing the burden on defendant Firestone to demonstrate why the pretrial summary should have been modified "to prevent manifest injustice”, the trial judge ignored GCR 1963, 301.3 and erroneously shifted to plaintiffs the burden of establishing why defendant’s expert should not have been permitted to testify.
Although we do not expressly approve of the judge’s actions, we find that plaintiffs’ first argument misperceives the responsibility of a trial judge when considering a motion under GCR 1963, 301.3. Contrary to plaintiffs’ assertions, a judge is not required to hear the motion within a framework comparable to that employed at trial for the presentation of evidence. The party making the motion, of course, is required to go forward with the motion and present it to the court. The judge must then provide the adversary party with an opportunity to answer the moving party’s motion. Thereafter, the judge may exercise his discretion. Pursuant to the terms of GCR 1963, 301.3, a *564modification of the pretrial summary is permitted if, in the opinion of the presiding judge, a modification is necessary in order to prevent a "manifest injustice”. Bednarsh v Winshall, 374 Mich 667; 133 NW2d 202 (1965). An appellate court will not reverse the judge’s decision unless it appears that there has been a clear abuse of discretion. Clark v Berrien Circuit Judge, 194 Mich 180, 183; 160 NW 409 (1916); Brookdale Cemetery Association v Lewis, 342 Mich 14, 18-19; 69 NW2d 176 (1955); Johnson v Kramer Bros Freight Lines, Inc, 357 Mich 254, 257-260; 98 NW2d 586 (1959); Wendel v Swanberg, 384 Mich 468, 475-477; 185 NW2d 348 (1971).
Our review of the record in this case does not indicate that the trial judge erred by abusing his discretion in allowing defendant’s expert witness to testify at trial. Several factors lead us to this conclusion. First, the issues in the case had been limited from the early stages of the pleadings and were not affected by permitting defendant’s expert to testify.3 Second, plaintiffs did take the deposi*565tion of defendant’s expert prior to the trial and thereafter neither requested further time to prepare for trial nor alleged any prejudicial effect on their case resulting from the delay in deposing the expert witness. Third, the technical nature of the case required defendant’s presentation of expert testimony to adequately establish its own case and to attempt to rebut plaintiffs’ proofs.4 In sum, the lack of prejudicial effect on the plaintiffs’ case when balanced against the limitations that would have been placed upon defendant’s case if its expert had been precluded from testifying, amply indicates that the judge reasonably concluded that a deviation from the pretrial summary was required in order to prevent a manifest injustice.
Pretrial proceedings, of which the pretrial summary is an intregal part, received their first significant use in this country in the courts of the State of Michigan.5 Today, pretrial proceedings are an indispensable tool for the speedy and just resolution of civil disputes. They are designed to familiarize the parties and the court with the issues and proofs involved in a lawsuit so that the parties can accurately appraise their cases. Their effectiveness is derived not only from the substance of our court rules, but also from the discretionary supervision of the trial judge. If the judge were not allowed to deviate from the pretrial summary when reasonably necessary to prevent a manifest injustice, this tool designed to promote the open and fair presentation of evidence at trial could easily frustrate those objectives. Cf. Clark v Pennsylvania R Co, 328 F2d 591 (CA 2, 1964). Cert den 377 US 1006, 84 S Ct 1943, 12 L Ed 2d 1054 (1964).
*566II
During the presentation of plaintiffs’ case, plaintiffs’ counsel read into evidence under the authority of GCR 1963, 309.4 and 302.4(4) plaintiffs’ questions 6, 7 and 8 and defendant’s answers thereto from a set of interrogatories dated December 29, 1967 in order to support plaintiffs’ theory that the blowout resulted from the improper manufacture of the tire.
[6] " 'Q. Did your inspection reflect any unusual wear on the tire?
" ’A. (under oath) No.
[7] " 'Q. Did your examination reflect any unusual use of the tire?
" A. No.
[8] '"Q. Based upon your examination of the tire, approximately how many miles did the tire have on it?
" A. Not determined.’ ”
Immediately after the above quoted questions had been read to the jury, defense counsel indicated to the court his desire to have the remaining portions of the December 29, 1967 interrogatories read to the jury. Plaintiff objected to defendant’s request on the grounds that if the remaining portion of interrogatories were introduced by defendant, defendant’s answers contained therein would be inadmissible self-serving hearsay statements. The trial court overruled plaintiffs’ objection indicating that defendant had the right to read the remaining questions to insure that the previously read questions were considered in context by the jury. Defendant’s counsel then read the remaining portion of the December 29, 1967 interrogatories to the jury:
*567"Mr. Ritchie: [defendant’s counsel] The first question reads:
" Q. 1. Was the tire which is the subject matter of this lawsuit examined by the defendant’s agents?’
"And the answer which was furnished on February 6, 1968, states:
" ’A. A tire represented on behalf of plaintiffs to be the subject matter of this lawsuit was examined by The Firestone Tire & Rubber Company.’
"The second question:
" 'Q. 2. What did the inspection reveal?
" A. The tire lost its capability .to retain inflation pressure as a result of a cut by a foreign object through the tire body.
" 'Q. 3. Who performed the examination on the tire? Please list their names, jobs, and special training.
" A. John H. Cox. Senior Tire Engineer. Twenty-three years’ experience in tire engineering, with technical responsibilities for design and evaluation of tires and analyses of tire performance.
" 'Q. 4. What conclusions were drawn from the inspection?’
"And the answer refers back to Answer 2, which says that the tire was cut.
"Mr. Miller: [plaintiffs’ counsel] Just read the answer without comment, if you will.
"I would object to his comment, your Honor.
"The Court: Overrule your objection. I see no reason for making that objection at all.
"Proceed.
"Mr. Ritchie: 'Q. 5. Which of the people who examined the tire on your behalf are able to render an opinion as to the reason the plaintiffs’ tire failed?’
"And we refer back to Answer No. 3 which named John H. Cox, Senior Tire Engineer.
" 'Q. 5(a). What reasons were given for the tire’s failure by the people who examined the tire?’
"And the answer for that question referred back to Answer No. 2.
"And then we get to No. 6, which Mr. Miller read.
"The Court: Who signed the answers?
*568“Mr. Ritchie: These were signed by John F. Floberg, Vice-President, Secretary and General Counsel for The Firestone Tire & Rubber Company.”
Plaintiffs appeal this adverse ruling by the trial judge. The parties do not dispute the fact that normally the material read to the jury by defendant’s counsel would be inadmissible hearsay when offered by defendant. Accordingly, we are left to resolve two legal issues. First, we must decide whether these statements were properly admitted under the authority of GCR 1963, 302.4(4). Second, if the statements were not admissible, we must decide if the fact of their admission in this case constituted reversible error.
In our opinion a correct analysis of this first issue was set forth by then Judge Levin in his dissenting opinion filed in this matter below, 44 Mich App 1, 4-6 (1972), which we take the liberty of quoting in part:
"At the trial, the Hanlons’ lawyer read into evidence Firestone’s answers to certain interrogatories which the Hanlons had submitted. Firestone’s lawyer was then permitted, over objection, to read into evidence his client’s answers to other interrogatories. The majority uphold this ruling of the trial court on the ground that the portion of the interrogatories which Firestone was permitted to present to the jury was relevant to the portion introduced by the Hanlons. I dissent because in my opinion the portion which Firestone was permitted to introduce was not 'relevant’ within the meaning of GCR 1963, 302.4(4), which provides:
" 'If only part of a deposition is offered in evidence by a party, an adverse party may require him to introduce all of it which is relevant to the part introduced, and any party may introduce any other parts.’
"While this rule does not literally impose any limitation on what Firestone, as the adverse party, may itself introduce — speaking only of what an adverse party can *569'require’ the offering party (the Hanlons) to introduce— it is clear that Firestone can introduce as part of its own case only those interrogatories and answers which it could have compelled the Hanlons, as the offering party, to introduce.1 The question then is what parts could Firestone, as the adverse party, properly compel the Hanlons, as the offering party, to introduce.
"The words of Rule 302.4(4) repeat verbatim the language of former2 FR Civ P, 26(d)(4). In Westinghouse Electric Corp v Wray Equipment Corp, 286 F2d 491, 494 (CA 1, 1961), the United States Court of Appeals for the First Circuit declared of Rule 26(d)(4):
" 'The rule provides a method of averting, so far as possible, any misimpressions from selective use of deposition testimony. The opposing party is entitled under the rule to have the context of any statement, or any qualiñcations made as a part of the deponent’s testimony also put into evidence.’ (Emphasis supplied.) *570Federal Practice & Procedure, § 2148, p 464; 4A Moore’s Federal Practice, ¶ 32.06.”
"Similarly, Messrs. Honigman and Hawkins write:
" 'If a party introduces only a portion of a deposition in evidence, sub-rule 302.4(4) permits an adverse party to require him to introduce all of it which is relevant to the part which is introduced. In addition, any party may later introduce any other parts of the deposition. The reason for the rule is clear. It is designed to prevent unfairness which may result if a statement is taken out of context. ’ (Emphasis supplied.) 2 Honigman & Hawkins, Michigan Court Rules Annotated (2d ed), Rule 302.4, authors’ comments, p 59.3
"Unless the provision of the court rule allowing other parts of a deposition to be read is limited to the kind of case referred to by these authorities — if the word 'relevant’ is interpreted loosely — then in almost every case the use of part of a deposition would entitle the adverse party to force the offering party to introduce the rest of the deposition, or allow the adverse party to introduce it himself. Every part of almost any deposition is likely to be relevant to the other parts on some theory or other since all parts of a deposition are presumably relevant to the issues in the case.
"In my opinion, a more sensible construction, a construction which makes the intended limitation truly a limitation, would permit introduction only of that which is necessary to avoid 'misimpression’ or 'unfairness’.”
While we adopt Justice Levin’s legal analysis on the first of our two designated issues, we differ with his conclusion that the facts of this case *571require a reversal of the jury’s verdict. The only fact that was introduced to the jury by the improperly admitted interrogatories was that an experienced tire engineer employed by defendant company concluded that the tire had been cut by a foreign object. This hearsay testimony was identical to the testimony that was properly delivered in court by defendant’s employee-expert who the jury knew possessed the same general qualifications and biases as those attributed to the tire engineer speaking through the interrogatories. In light of the limited nature of the improperly admitted hearsay, its source and the fact that the jury was exposed to identical testimony from an in-court witness who was also an employee of the defendant, we do not believe that the admission of the hearsay was prejudicial in itself or reasonably could have influenced the jury by highlighting the court testimony of defendant’s expert. See, GCR 1963, 529; 3 Honigman & Hawkins, Michigan Court Rules Annotated (2d ed), p 227-228; Cf. Newton v Consolidated Construction Co, 184 Mich 63, 72; 150 NW 348 (1915); Weaver v Richards, 156 Mich 320, 325; 120 NW 818 (1909).
In our opinion, the trial judge committed harmless error by permitting the hearsay testimony to be read to the jury.
Appellants raise additional claims of error. These, we find, were adequately answered in the opinion below.
The decision of the Court of Appeals is affirmed.
T. M. Kavanagh, C. J., and T. G. Kavanagh and Williams, JJ., concurred with Swainson, J.Hanlon v The Firestone Tire & Rubber Co, 44 Mich App 1; 204 NW2d 722 (1972).
GCR 1963, 301.3:
"The judge shall prepare, file, and cause to be served upon the attorneys of record, at least 10 days in advance of trial, a summary of the results of the pretrial conference specifically covering each of the items herein stated. The summary of results controls the subsequent course of the action unless modified at or before trial to prevent manifest injustice. The court may provide by rule a pretrial calendar on which actions may be placed for consideration and may also by rule amplify or modify the pretrial procedure as herein provided in the furtherance of justice but not in conflict with these rules. No party shall be deprived of the right to present competent proof at the trial in support of any issues raised in the pleadings unless such issues have been expressly waived at the pretrial conference and such waiver is recorded in the said summary of results.”
The original purpose underlying the development and design of pretrial proceedings was to familiarize the parties with the issues involved in the case and to narrow the number of issues that would have to be resolved at trial. Sunderland, The Theory and Practice of Pre-Trial Procedure, 36 Mich L Rev 215 (1937); 6 Wright and Miller, Federal Practice and Procedure, p 566 (1971). Today, although narrowing the issues involved in a case is not the singular function of pretrial practice, it remains the primary goal of these proceedings. See, GCR 1963, 301.1; 2 Honigman & Hawkins, Michigan Court Rules Annotated (2d ed), pp 6-8. Limitation of issues is an indispensable tool in the settlement of cases and reduces "traps and surprises” at trial. Applebaum v Wechsler, 350 Mich 636, 650; 87 NW2d 322 (1957); Sunderland, supra, 225. Courts accordingly tend to strictly follow the terms of the pretrial summary when a deviation therefrom would affect the issues to be resolved at trial. In the event that a modification of the pretrial summary affects the scope of previously agreed upon issues, the trial judge’s discretion will be subject to a more stringent standard of review than in those cases where the scope of the issues has not been affected. Compare, Scott v Cleveland, 360 Mich 322; 103 NW2d 631 (1960) with Snyder v New York Central Transport Co, 4 Mich App 38; 143 NW2d 791 (1966) and Coles v Galloway, 7 Mich App 93; 151 NW2d 229 (1967).
See, Snyder v New York Central Transport Co, supra; Coles v Galloway, supra.
Sunderland, The Theory and Practice of Pre-Trial Procedure, 36 Mich L Rev 215 (1937).
"GCR 1963, 302.4(4) provides (see accompanying text for the complete language of this sub-rule) that 'any party may introduce any other parts’. (Emphasis supplied.) Firestone has not argued that the parts of the questions and answers which it sought to introduce were made admissible by this phrase. The only reasonable interpretation of this phrase is that it reaffirms the right of other parties to make such use of the remainder of the deposition as is countenanced by GCR 1963, 302.4(1)-(3). Cf. LaBelle v Swanson, 248 Minn 35, 43; 78 NW2d 358, 363 (1956); 8 Wright & Miller, Federal Practice & Procedure, § 2148, pp 464-465.
"The parts of the interrogatories sought to be introduced by Firestone do not appear to have been otherwise admissible. They were interrogatories addressed to a party and were taken under GCR 1963, 309, as distinguished from a deposition of a witness on written interrogatories under GCR 1963, 307.
"The report by Firestone, in its answers to the interrogatories, of the opinion of witness Cox concerning the cause of the blowout stands merely as self-serving hearsay. See fn. 3, infra. ”
"FR Civ P, 26(d)(4) has been replaced by FR Civ P, 32(a)(4), which provides:
" 'If only part of a deposition is oifered in evidence by a party, an adverse party may require him to introduce any other part which ought in fairness to be considered with the part introduced, and any party may introduce any other parts.’ (Emphasis supplied.)
"I would regard the new formulation as merely articulating with greater clarity the policy of the old rule.. See 8 Wright & Miller,
,, "p^us, answers to interrogatories may be used at the trial to impeach testimony by the answering party or as substantive evidence against him and him only. The answers cannot be used on behalf of the answering party, except to the extent that related answers may be put in evidence to prevent the unfairness of taking a single answer out of context.’ (Emphasis supplied.) 2 Honigman & Hawkins, Michigan Court Rules Annotated (2d ed), Rule 309, authors’ comments, p 160.”