Stock tire, radial size is 165R15.
Nearest equivalent you will find nowadays is 165/ 80R15
A 175/65/15 would be a bit lower. wider, 185/65/15 will go, similar sidewall, still a bit lower, but is pushing mounting on a stock width rim without "bulging out".
Trouble is finding taller/ bigger tires that aren't A/T tread patterns. If it's a stock application, run the 165s. The 175s i mentioned look cool on a lower car, but leave a silly looking fender gap. Plus, bigger tires on the front will affect handling/ steering to the tune of feeling much "heavier"