The 160's will fit but you will lose accuracy.... just a wee bit..... about 1.5mph at 70...
Mike
First; sorry for resurrecting; and hijacking; a nearly two year old thread.
But the topic of this thread is something I was recently experiencing myself.
Due to the supply chain issues that have been occurring for the past 4 years.
With nearly every wear item for my vehicles; filters, coolant, oils, tires, brake pads/shoes, etc ...
I've made it a point to have at least one spare of each item on hand; no matter how long it will be before it will need replacing.
At the beginning of last month I changed the tires on my NT. And I used the spare set I had bought almost a year ago.
While I no longer commute to work; and hence my riding mileage has been reduced greatly. From about 30k per year to maybe 5k per year.
I still tried to buy a spare set of tires before replacing the current, worn out tires.
However; I just could not find any source for NT's stock size of 150/70.
And since inspection was due; I changed the tires without buying a spare set.
Well here it is almost two months later. And I still have not found any 150/70.
AND I could not find any tire, of any model, of any brand that had both front and rear stock sizes for the NT.
If I found a 120/70 for the front; they were out of 150/70 for the rear; if they had 150/70, they were out of 120/70.
So I found recently found this thread. Saw that 160's will fit.
And I saw that Kenda is now making a sport-touring tire; the KM-1; that sounds very much like the Continental Contimotion that I've been using for the past dozen years.
However it only comes in 160/60.
But with the comments in this thread; I decided to take a chance and buy a couple sets of the Kenda KM-1.
I bought a set for my Griso; 120/70 + 180/55; and a set for the NT 120/70 + 160/60.
Using
https://tiresize.com/calculator/; I see that the 160/60 is .7 inches shorter than 150/70.
Now with my track bike; Suzuki SV-650s; when I had to switch stock front tire from 120/60 to 120/70.
I had to compensate for the .9 inch height difference by adjusting the fork tubes.
For those of you who have used a 160/60 on the rear of the NT.
Did you notice enough of a handling difference to have to adjust your fork tubes ?
Thanks;
--ET