From what I have seen..
3.0 x 16 was the tire size for the CA95
3.25 x 16 was the tire size for the CA160
The front tires were ribbed on both models
The rear tire had a cross hatch tread pattern on both models
The whitewall tires promised to all but delivered to none, are ribbed type.
I have restored and rode 2 CA95's and 2 CA160's (now working on a 3rd CA160)
I have riden a CA95, owned by a friend, with the whitewall ribbed tires on both front & back as well.
I have used these very tires for both models I like to work on:
https://www.denniskirk.com/irc/rear-....prd/54368.sku
These tires feel good at 60mph. I really don't venture much faster. I felt no problem running the same tread design on front & rear. I know that the whitewall tires, when available, with the rib design tread, feel good on both front and rear applications.
The 3.0 and 3.25 x 16 size tire fits nicely and allows the rear tire to be removed without disturbing the chain guard/chain/drive.
The 1st CA95 I restored I kind of went old school with and mounted 3.50 x 16 tires. They looked cool and had a tight fit...but changing the tire meant removing the chain guard and sprocket drive assembly. The 3.50 size did not rub...but they rode very close to the frame.
There are some other choices that other members found. Some folks have used the portawalls (member kartgreen for one). I have seen his bike with the portawalls on metric size tires that look real real nice.
So, basically, pick the choice that pleases you the best.