Philip, I know you said you don't want the size, but I will offer this.
The thing about the original tires is the aspect ratio. The aspect ratio for a bias ply is (I believe) 100%. I'm talking about the height of the sidewall.
a 195/70 R 15 has an aspect ratio of 70%.
a 195/60 R 15 has a 60% aspect ratio.
There are some radial tires available that do not quote an aspect ratio. These have an 82% aspect ratio. This is the tallest you can get in a radial (except for some off road 16 inchers that can be 85%)
I'd be looking for one of these where the aspect ratio is not quoted.
Try an online search for a tire supplier that can supply a 195 R15. or a 185 R15. If you can see any available, then look to see if there is one that looks ok.
My opinion is that some modern tires have awfully cluttered designs on the sidewall. You want to pick one with the least cluttered sidewall design that has a decent looking tread pattern.
Now, these tyres in the 195 and 185 sizes are all van tyres. no passenger car has them as standard, but your 40 being a wagon would probably be quite suited.
Disclaimer. I found these sizes available here in the UK from a Germany based company. They might not be available in the USA.
Here is what would be available to me here in the UK
185 R15:
https://www.mytyres.co.uk/cgi-bin/r...er_preis_von=&filter_preis_bis=&homologation=
195 R 15:
https://www.mytyres.co.uk/cgi-bin/r...rd&rsmFahrzeugart=ALL&suchen=Search+for+tyres
The links might not work as they may be location dependent.
Bottom line: Pick the size you want (tallest sidewall being most important in my opinion) then look to see what you can get.
Mart.