I have a set of original 4.5 inch steel wheels, but I'm having trouble getting 175 HR-14 tires. One tire shop traced back the "HR" designation and said it would be 1.5 inches greater in diameter than any 14-nch made today. I'm trying to get my '71 240Z back as close to original as possible, and I have the original restored hubcaps and 4.5 inch steel wheels.

Any thoughts, wisdom or suggestions would be appreciated.

Look here: https://cokertire.com/amfinder/index/index?finder_id=33511382

The tread design of the Michelin XAS 175 HR14 looks pretty close to original. Here's a photo of my original spare tire of my 12/70 car.

Edited 4 hours ago4 hr by w3wilkes

Also: https://www.vredestein.com/classic-tires/products/990-SPRINT-CLASSIC/

Tire Rack link for the above tires: https://www.tirerack.com/tires/tires.jsp?tireMake=Vredestein&tireModel=Sprint+Classic&sidewall=Blackwall&partnum=7HR4SC&tab=Sizes

Edited 4 hours ago4 hr by SteveJ

Richard, I have been using Vredestein Sprint Classic 175HR14 88H on my ‘71 series1 Z and they are pretty much a perfect size match to the Bridgestone Super Speed Radial - 20 original tires.